Log in

Relevant bibliographies by topics / SCIENCE / Physics / Astrophysics / Journal articles

To see the other types of publications on this topic, follow the link: SCIENCE / Physics / Astrophysics.

Journal articles on the topic 'SCIENCE / Physics / Astrophysics'

Author: Grafiati

Published: 4 June 2021

Last updated: 31 July 2024

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'SCIENCE / Physics / Astrophysics.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Longair, Malcolm, and Martin Rees. "Geoffrey Ronald Burbidge. 24 September 1925 — 26 January 2010." Biographical Memoirs of Fellows of the Royal Society 63 (January 2017): 55–78. http://dx.doi.org/10.1098/rsbm.2017.0002.

Full text

Abstract:

Geoffrey (Geoff) Burbidge's career spanned the tumultuous years when astronomy was transformed from a purely optical science to a multi-wavelength discipline through the development of new types of astronomy—radio, X-ray, γ -ray, cosmic ray physics. These offered new astrophysical and cosmological challenges, which he grasped with relish. To all of these disciplines, Geoff, often in collaboration with his wife Margaret Burbidge (FRS 1964), made pioneering contributions, particularly in the areas of the synthesis of the chemical elements, the physics of extragalactic radio sources, the rotation curves of galaxies, the dark matter problem in clusters of galaxies, the physics of accretion discs and the origin of cosmic rays. He also espoused less popular causes such as the non-cosmological nature of the redshifts of quasars and was sceptical about the standard Big Bang picture of the origin of the large-scale structure and dynamics of the Universe. He was a flamboyant and outspoken astrophysicist who challenged his colleagues about their deeply held views on all aspects of astrophysics and cosmology. His service to the community included five years as director of the US Kitt Peak National Observatory, based in Tucson, Arizona, and as a most effective editor of Annual Review of Astronomy and Astrophysics for over 30 years and the Astrophysical Journal.

APA, Harvard, Vancouver, ISO, and other styles

2

Kramida, Alexander. "Legacy of Charlotte Moore Sitterly in the Internet Age." Proceedings of the International Astronomical Union 18, S371 (2022): 12–40. http://dx.doi.org/10.1017/s1743921323000212.

Full text

Abstract:

AbstractMost (yet not all) results of atomic physics research of Charlotte Moore Sitterly (CMS), which was closely connected to astrophysics, are now incorporated in online databases, one of which is the Atomic Spectra Database of the National Institute of Standards and Technology. The use of this database extends far beyond astrophysics, but this review focuses on astrophysical applications. The impact of CMS’s work on modern atomic physics and other sciences is discussed, and problems that urgently need solutions are outlined.

APA, Harvard, Vancouver, ISO, and other styles

3

Lépine-Szily, Alinka, and Pierre Descouvemont. "Nuclear astrophysics: nucleosynthesis in the Universe." International Journal of Astrobiology 11, no. 4 (2012): 243–50. http://dx.doi.org/10.1017/s1473550412000158.

Full text

Abstract:

AbstractNuclear astrophysics is a relatively young science; it is about half a century old. It is a multidisciplinary subject, since it combines nuclear physics with astrophysics and observations in astronomy. It also addresses fundamental issues in astrobiology through the formation of elements, in particular those required for a carbon-based life. In this paper, a rapid overview of nucleosynthesis is given, mainly from the point of view of nuclear physics. A short historical introduction is followed by the definition of the relevant nuclear parameters, such as nuclear reaction cross sections, astrophysical S-factors, the energy range defined by the Gamow peak and reaction rates. The different astrophysical scenarios that are the sites of nucleosynthesis, and different processes, cycles and chains that are responsible for the building of complex nuclei from the elementary hydrogen nuclei are then briefly described.

APA, Harvard, Vancouver, ISO, and other styles

4

Fedotova, Maria, Dmitry Klimachkov, and Arakel Petrosyan. "Variable Density Flows in Rotating Astrophysical Plasma. Linear Waves and Resonant Phenomena." Universe 7, no. 4 (2021): 87. http://dx.doi.org/10.3390/universe7040087.

Full text

Abstract:

New observational data and modeling of physical processes constantly appear in the young and rapidly developing branch of science of plasma astrophysics. However, there is a lack of theoretical studies in the field of plasma astrophysics, that could unite the physics of various objects in the Universe, explain the observed phenomena and contribute to the improvement of numerical modeling schemes efficiency. This article makes up for this shortcoming by introducing different models, taking into account the various properties of plasma objects. We present a review of the latest magnetohydrodynamic theories of wave processes in rotating astrophysical plasma, taking into account important and common properties of astrophysical objects as compressibility and stratification.

APA, Harvard, Vancouver, ISO, and other styles

5

Irion, R. "ASTROPHYSICS: Stanford Gets Serious About Space Physics." Science 299, no. 5606 (2003): 492b—492. http://dx.doi.org/10.1126/science.299.5606.492b.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

V, Prakash, Dharanishwari R, Jayashree LM, and Boya pavani. "ASTROPHYSICS." International Journal of Innovative Research in Information Security 09, no. 03 (2023): 90–91. http://dx.doi.org/10.26562/ijiris.2023.v0903.09.

Full text

Abstract:

Astrophysics is a branch of space science that applies the laws of physics and chemistry to seek to understand the universe and our place in it. The field explores topics such as the birth, life and death of stars, planets, galaxies, nebulae and other objects in the universe. The Astrophysics creates physical theories of small to medium-size objects and structures in the universe.

APA, Harvard, Vancouver, ISO, and other styles

7

Aalbers, J., S. S. AbdusSalam, K. Abe, et al. "A next-generation liquid xenon observatory for dark matter and neutrino physics." Journal of Physics G: Nuclear and Particle Physics 50, no. 1 (2022): 013001. http://dx.doi.org/10.1088/1361-6471/ac841a.

Full text

Abstract:

Abstract The nature of dark matter and properties of neutrinos are among the most pressing issues in contemporary particle physics. The dual-phase xenon time-projection chamber is the leading technology to cover the available parameter space for weakly interacting massive particles, while featuring extensive sensitivity to many alternative dark matter candidates. These detectors can also study neutrinos through neutrinoless double-beta decay and through a variety of astrophysical sources. A next-generation xenon-based detector will therefore be a true multi-purpose observatory to significantly advance particle physics, nuclear physics, astrophysics, solar physics, and cosmology. This review article presents the science cases for such a detector.

APA, Harvard, Vancouver, ISO, and other styles

8

Raine, Derek. "Practicing science practice." New Directions in the Teaching of Physical Sciences, no. 1 (February 23, 2016): 48–49. http://dx.doi.org/10.29311/ndtps.v0i1.404.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Eichler, David. "Ongoing space physics – Astrophysics connections." Advances in Space Research 38, no. 1 (2006): 16–20. http://dx.doi.org/10.1016/j.asr.2004.12.079.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Schäfer, Gerhard. "Gravitomagnetism in Physics and Astrophysics." Space Science Reviews 148, no. 1-4 (2009): 37–52. http://dx.doi.org/10.1007/s11214-009-9537-2.

Full text

APA, Harvard, Vancouver, ISO, and other styles

11

Gilmore, Gerard. "The Science of Galaxy Formation." Proceedings of the International Astronomical Union 4, S254 (2008): 487–96. http://dx.doi.org/10.1017/s1743921308028032.

Full text

Abstract:

AbstractOur knowledge of the Universe remains discovery-led: in the absence of adequate physics-based theory, interpretation of new results requires a scientific methodology. Commonly, scientific progress in astrophysics is motivated by the empirical success of the “Copernican Principle”, that the simplest and most objective analysis of observation leads to progress. A complementary approach tests the prediction of models against observation. In practise, astrophysics has few real theories, and has little control over what we can observe. Compromise is unavoidable. Advances in understanding complex non-linear situations, such as galaxy formation, require that models attempt to isolate key physical properties, rather than trying to reproduce complexity. A specific example is discussed, where substantial progress in fundamental physics could be made with an ambitious approach to modelling: simulating the spectrum of perturbations on small scales.

APA, Harvard, Vancouver, ISO, and other styles

12

Sigl, G. "Ultrahigh-Energy Cosmic Rays: Physics and Astrophysics at Extreme Energies." Science 291, no. 5501 (2001): 73–79. http://dx.doi.org/10.1126/science.291.5501.73.

Full text

APA, Harvard, Vancouver, ISO, and other styles

13

FIORINI, ETTORE. "NEUTRINO IN PHYSICS AND ASTROPHYSICS." International Journal of Modern Physics D 22, no. 11 (2013): 1360003. http://dx.doi.org/10.1142/s0218271813600031.

Full text

Abstract:

The recent impact of the discovery of neutrino oscillations and the related evidence of a finite neutrino mass has stimulated searches to actually measure or constraint the effective mass of this particle. Present and planned experiments based on cosmology and on single and double beta decay will be reviewed together with the suggested possibility of a Majorana nature of the neutrino.

APA, Harvard, Vancouver, ISO, and other styles

14

BOYD, RICHARD N. "NATIONAL SCIENCE FOUNDATION VISION IN PARTICLE AND NUCLEAR ASTROPHYSICS." International Journal of Modern Physics D 16, no. 12a (2007): 1981–88. http://dx.doi.org/10.1142/s0218271807011243.

Full text

Abstract:

The NSF has made investments in searches for dark matter, in ultrahigh energy cosmic rays and gamma rays, in neutrino physics and astrophysics, and in nuclear astrophysics. We expect the future to witness the expansion of these efforts, along with efforts to refine the measurements of the cosmic microwave background. In some of these efforts the Deep Underground Science and Engineering Laboratory is expected to play a major role.

APA, Harvard, Vancouver, ISO, and other styles

15

Swinbank, E. "The TRUMP Astrophysics Project: resources for physics teaching." International Astronomical Union Colloquium 162 (1998): 320–25. http://dx.doi.org/10.1017/s0252921100115337.

Full text

Abstract:

Comets and quasars, black holes and the big bang, pulsars and planets all feature in the media and excite people to find out more - astronomy might be described as the popular face of modern science. In the UK, recent changes in Advanced Level (A-level) physics courses mean that many students have the option of studying astrophysics to a depth beyond the merely descriptive. This option is proving popular with teachers and students, but presents particular challenges shared by few other areas of A-level physics courses.

APA, Harvard, Vancouver, ISO, and other styles

16

Rapisarda, G. G., R. Spartá, and A. Tumino. "Few-Body Reactions with the Trojan Horse Method." EPJ Web of Conferences 290 (2023): 09009. http://dx.doi.org/10.1051/epjconf/202329009009.

Full text

Abstract:

The Trojan Horse method (THM) is a well-established experimental technique to measure nuclear reactions of astrophysical interest avoiding the suppression of the Coulomb barrier affecting experimental direct measurements. In this paper it will describe some of the THM studies involving few-body system of interest for both nuclear physics and nuclear astrophysics, such as the sub-Coulomb proton-proton elastic scattering and the deuteron-deuteron fusion at energies of interest for primordial nucleosynthesis. Moreover, the role of the intercluster motion in nuclei used for THM measurement will be highlight for the discussed physics cases.

APA, Harvard, Vancouver, ISO, and other styles

17

Zheleznyakov, V. V. "New Books: Astrophysics and Space Science." Physics Essays 10, no. 3 (1997): 534–35. http://dx.doi.org/10.4006/1.3041626.

Full text

APA, Harvard, Vancouver, ISO, and other styles

18

TURYSHEV, SLAVA G., ULF E. ISRAELSSON, MICHAEL SHAO, et al. "SPACE-BASED RESEARCH IN FUNDAMENTAL PHYSICS AND QUANTUM TECHNOLOGIES." International Journal of Modern Physics D 16, no. 12a (2007): 1879–925. http://dx.doi.org/10.1142/s0218271807011760.

Full text

Abstract:

Space offers unique experimental conditions and a wide range of opportunities to explore the foundations of modern physics with an accuracy far beyond that of ground-based experiments. Space-based experiments today can uniquely address important questions related to the fundamental laws of Nature. In particular, high-accuracy physics experiments in space can test relativistic gravity and probe the physics beyond the Standard Model; they can perform direct detection of gravitational waves and are naturally suited for investigations in precision cosmology and astroparticle physics. In addition, atomic physics has recently shown substantial progress in the development of optical clocks and atom interferometers. If placed in space, these instruments could turn into powerful high-resolution quantum sensors greatly benefiting fundamental physics. We discuss the current status of space-based research in fundamental physics, its discovery potential, and its importance for modern science. We offer a set of recommendations to be considered by the upcoming National Academy of Sciences' Decadal Survey in Astronomy and Astrophysics. In our opinion, the Decadal Survey should include space-based research in fundamental physics as one of its focus areas. We recommend establishing an Astronomy and Astrophysics Advisory Committee's interagency "Fundamental Physics Task Force" to assess the status of both ground- and space-based efforts in the field, to identify the most important objectives, and to suggest the best ways to organize the work of several federal agencies involved. We also recommend establishing a new NASA-led interagency program in fundamental physics that will consolidate new technologies, prepare key instruments for future space missions, and build a strong scientific and engineering community. Our goal is to expand NASA's science objectives in space by including "laboratory research in fundamental physics" as an element in the agency's ongoing space research efforts.

APA, Harvard, Vancouver, ISO, and other styles

19

Glanz, J. "Astrophysics: Does a Cosmic Ray Gap Open the Door on New Physics?" Science 270, no. 5244 (1995): 1923a—1924. http://dx.doi.org/10.1126/science.270.5244.1923a.

Full text

APA, Harvard, Vancouver, ISO, and other styles

20

WOLFENSTEIN, L. "Neutrino Mass: '86 Massive Neutrinos in Astrophysics and in Particle Physics." Science 236, no. 4799 (1987): 341–42. http://dx.doi.org/10.1126/science.236.4799.341-a.

Full text

APA, Harvard, Vancouver, ISO, and other styles

21

Schroeder, Frank G., Alan Coleman, Johannes Eser, et al. "The Snowmass UHECR White Paper on Ultra-High-Energy Cosmic Rays." EPJ Web of Conferences 283 (2023): 01001. http://dx.doi.org/10.1051/epjconf/202328301001.

Full text

Abstract:

This proceeding summarizes the talk given at the opening of the UHECR 2022 conference in L’Aquila on the whitepaper ‘Ultra-High-Energy Cosmic Rays: The Intersection of the Cosmic and Energy Frontiers’ [Astroparticle Physics 149 (2023) 102819 - arXiv:2205.05845] that has been prepared for the Snowmass survey in the USA. The whitepaper provides an overview of recent progress and open questions regarding the particle physics and astrophysics related to ultra-high-energy cosmic rays (UHECR) and outlines the connections between the particle and astrophysics aspects of cosmic rays. It also discusses what instrumentation is needed to address the major scientific questions in ultra-high-energy cosmic-ray physics. While the upgraded Pierre Auger Observatory and Telescope Array will remain the workhorses at the highest energies in the current decade, new experiments with significantly higher exposure are needed in the coming decade. Ground arrays featuring simultaneous detection of the position of the shower maximum and the size of the muonic component will enable particle astronomy by measuring the rigidity of individual events. They should be complemented by other detectors maximizing the total exposure. This can be achieved by a few next-generation experiments using the latest developments in detection and analysis techniques: GRAND as a ground-based radio array, and POEMMA as a space-borne stereo fluorescence telescope will feature complementary approaches to provide maximum exposure; IceCube-Gen2 with its surface array, and GCOS aim at increased statistics with high accuracy for particle physics and rigidity-based galactic and extra-galactic astrophysics. While designed to discover the astrophysical cosmic-ray sources at the highest energies, the same experiments also contribute to particle physics, e.g., by studying the muon puzzle in cosmic-ray air showers, and by their discovery potential for exciting new physics, such as certain Dark Matter candidates. With the full whitepaper available as a reference, this proceeding will briefly present the science cases of the experiments, highlighting their individual strengths and outlining how they complement each other.

APA, Harvard, Vancouver, ISO, and other styles

22

Hartquist, Thomas W., and Ewine F. Van Dishoeck. "Alexander Dalgarno. 5 January 1928—9 April 2015." Biographical Memoirs of Fellows of the Royal Society 69 (August 5, 2020): 145–74. http://dx.doi.org/10.1098/rsbm.2020.0009.

Full text

Abstract:

Alexander (Alex) Dalgarno greatly advanced the quantitative study of fundamental atomic and molecular processes, contributed significantly to atmospheric science and ‘established molecular astrophysics as a unified intellectual field of great scientific endeavour, impact and achievement’ ( Flannery 2010 ). Alex developed and applied techniques that simplify calculations and lead to reliable solutions, enabling him to make landmark contributions to the knowledge of collisionally induced charge transfer, rotational and vibrational excitation of molecules, spin exchange and ultracold chemistry. His wide-ranging curiosity, disciplined steps to broaden his programme and ability to identify dominant physical processes and calculate their rates led to his many important contributions to atmospheric science. For example, Alex greatly expanded the knowledge of terrestrial airglow features, photoabsorption and collisional processes in the terrestrial ozone layer and deposition by energetic electrons in the atmospheres of other planets. In molecular astrophysics, he applied that same systematic approach to studies of a range of environments from the early Universe to present-day UV-irradiated interstellar clouds, shocks and supernova ejecta. Alex made availability to students a priority and encouraged them to pursue problems that they devised, despite his seemingly inexhaustible supply of suitable projects. His community service included his 29-year long editorship of Astrophysical Journal Letters , starting in 1973, and the founding of the Institute of Theoretical Atomic and Molecular Physics at the Harvard-Smithsonian Center for Astrophysics, in 1988, owing to his concerns for the health of the fields of theoretical atomic and molecular physics and fundamental quantum mechanics, which the Institute did much to reinvigorate.

APA, Harvard, Vancouver, ISO, and other styles

23

Longair, Malcolm. "Radio astronomy and the rise of high-energy astrophysics two anniversaries." International Journal of Modern Physics D 28, no. 02 (2019): 1930004. http://dx.doi.org/10.1142/s0218271819300040.

Full text

Abstract:

This paper celebrates the 100th anniversary of the birth of Martin Ryle and the 50th anniversary of the discovery of pulsars by Jocelyn Bell and Antony Hewish. Ryle and Hewish received the 1974 Nobel Prize in Physics, the first in the area of astrophysics. Their interests strongly overlapped, one of the key papers on the practical implementation of the technique of aperture synthesis being co-authored by Ryle and Hewish. The discovery of pulsars and the roles played by Hewish and Bell are described. These key advances were at the heart of the dramatic rise of high-energy astrophysics in the 1960s and led to the realization that general relativity is central to the understanding of high-energy astrophysical phenomena.

APA, Harvard, Vancouver, ISO, and other styles

24

Hearnshaw, J. B. "Astrophysics in the 1890s – The Dawn of a New Age in Astronomy." International Astronomical Union Colloquium 176 (2000): 1–6. http://dx.doi.org/10.1017/s0252921100056979.

Full text

Abstract:

AbstractThe Konkoly Observatory was established as a public institution in Hungary in 1899, when Nicholas von Konkoly Thege (1842–1916) bequethed his private observatory at Ógyalla to the state. Konkoly himself was one of the pioneers in the new science of astrophysics, and he was an expert in astronomical instruments used for photometry and spectroscopy.In this paper I review, from a global perspective, the 1890s decade as ten years of prodigious achievements in stellar astronomy, with many huge programmes being launched and undertaken in spectral classification, radial velocities, photometry and astrometry. New astrophysical observatories were founded in America and Europe and new large telescopes designed and built, and the first international conferences were held in astronomy.Astrophysics was still a largely qualitative science in the 1890s, but this was soon to change in the early years of the present century. I review the development of astrophysics in the 1890s, its interaction with new discoveries in physics, and comment on some of the large projects in stellar photometry, spectroscopy and astrometry and especially the influence of photography on observational astrophysics. The place of Nicholas von Konkoly in this overall endeavour is discussed and I pay tribute to his considerable influence and to the observatory he founded. A century of state-funded astronomy in Hungary has been the result.

APA, Harvard, Vancouver, ISO, and other styles

25

Tesh, Sarah. "Ask me anything: Moiya McTier." Physics World 36, no. 7 (2023): 47ii. http://dx.doi.org/10.1088/2058-7058/36/07/31.

Full text

Abstract:

Moiya McTier is an astrophysicist, science communicator and author in New York City, US. She was the first person at Harvard University to major in both astrophysics and folklore, and in 2021 became the first Black woman to get a PhD from the astronomy programme at Columbia University. In 2022 McTier published her first book, The Milky Way: an Autobiography of our Galaxy.

APA, Harvard, Vancouver, ISO, and other styles

26

Yang, Junjie, and J. Piekarewicz. "Covariant Density Functional Theory in Nuclear Physics and Astrophysics." Annual Review of Nuclear and Particle Science 70, no. 1 (2020): 21–41. http://dx.doi.org/10.1146/annurev-nucl-101918-023608.

Full text

Abstract:

How does subatomic matter organize itself? Neutron stars are cosmic laboratories uniquely poised to answer this fundamental question that lies at the heart of nuclear science. Newly commissioned rare isotope facilities, telescopes operating across the entire electromagnetic spectrum, and ever more sensitive gravitational wave detectors will probe the properties of neutron-rich matter with unprecedented precision over an enormous range of densities. A coordinated effort between observation, experiment, and theoretical research is of paramount importance for realizing the full potential of these investments. Theoretical nuclear physics provides valuable insights into the properties of neutron-rich matter in regimes that are not presently accessible to experiment or observation. In particular, nuclear density functional theory is likely the only tractable framework that can bridge the entire nuclear landscape by connecting finite nuclei to neutron stars. This compelling connection is the main scope of the present review.

APA, Harvard, Vancouver, ISO, and other styles

27

Bernabei, R. "Physics and Astrophysics with low background scintillators." European Physical Journal Special Topics 163, no. 1 (2008): 207–26. http://dx.doi.org/10.1140/epjst/e2008-00821-9.

Full text

APA, Harvard, Vancouver, ISO, and other styles

28

Spinoglio, Luigi, Juan A. Fernández-Ontiveros, and Sabrina Mordini. "The physics of galaxy evolution with SPICA observations." Proceedings of the International Astronomical Union 15, S359 (2020): 72–77. http://dx.doi.org/10.1017/s1743921320004238.

Full text

Abstract:

AbstractThe evolution of galaxies at Cosmic Noon (1 < z < 3) passed through a dust-obscured phase, during which most stars formed and black holes in galactic nuclei started to shine, which cannot be seen in the optical and UV, but it needs rest frame mid-to-far IR spectroscopy to be unveiled. At these frequencies, dust extinction is minimal and a variety of atomic and molecular transitions, tracing most astrophysical domains, occur. The Space Infrared telescope for Cosmology and Astrophysics (SPICA), currently under evaluation for the 5th Medium Size ESA Cosmic Vision Mission, fully redesigned with its 2.5-m mirror cooled down to T < 8K will perform such observations. SPICA will provide for the first time a 3-dimensional spectroscopic view of the hidden side of star formation and black hole accretion in all environments, from voids to cluster cores over 90% of cosmic time. Here we outline what SPICA will do in galaxy evolution studies.

APA, Harvard, Vancouver, ISO, and other styles

29

Schatz, H., A. D. Becerril Reyes, A. Best, et al. "Horizons: nuclear astrophysics in the 2020s and beyond." Journal of Physics G: Nuclear and Particle Physics 49, no. 11 (2022): 110502. http://dx.doi.org/10.1088/1361-6471/ac8890.

Full text

Abstract:

Abstract Nuclear astrophysics is a field at the intersection of nuclear physics and astrophysics, which seeks to understand the nuclear engines of astronomical objects and the origin of the chemical elements. This white paper summarizes progress and status of the field, the new open questions that have emerged, and the tremendous scientific opportunities that have opened up with major advances in capabilities across an ever growing number of disciplines and subfields that need to be integrated. We take a holistic view of the field discussing the unique challenges and opportunities in nuclear astrophysics in regards to science, diversity, education, and the interdisciplinarity and breadth of the field. Clearly nuclear astrophysics is a dynamic field with a bright future that is entering a new era of discovery opportunities.

APA, Harvard, Vancouver, ISO, and other styles

30

R, Senthilkumar, and Ulaganathan G. "SCIENTOMETRIC ANALYSIS OF ASTROPHYSICS RESEARCH OUTPUT IN INDIA." Kongunadu Research Journal 3, no. 1 (2016): 84–87. http://dx.doi.org/10.26524/krj136.

Full text

Abstract:

Astrophysics is a branch of space science that applies the laws of physics and chemistry to explain the birth, life and death of stars, planets, galaxies, nebulae and other objects in the universe. Astrophysics creates physical theories of small to medium-size structures in the universe. Astrophysicists seek to understand the universe and our place in it. At NASA, the goals of astrophysics are "to discover how the universe work, explore how it began and evolved, and search for life on planets around other stars." This study analyzes the Astrophysics research output in India from the year 1989-2014. The data was downloaded from web of science database which was maintained by Thomson Reuters. The findings of the study revealed that two authors has the maximum of contribution with 3673 (28.81%) publication followed by three authors with 2875 (22.55%).

APA, Harvard, Vancouver, ISO, and other styles

31

McTier, Moiya. "From scientist to science communicator." Physics World 36, no. 12 (2023): 47–48. http://dx.doi.org/10.1088/2058-7058/36/12/39.

Full text

APA, Harvard, Vancouver, ISO, and other styles

32

Ralchenko, Yuri. "Atomic Physics and Spectroscopy During the First 50 Years of JPCRD." Journal of Physical and Chemical Reference Data 51, no. 1 (2022): 013101. http://dx.doi.org/10.1063/5.0087598.

Full text

Abstract:

Atomic spectroscopy and atomic physics papers represent a significant part of publications in Journal of Physical and Chemical Reference Data (JPCRD). Critical compilations of spectroscopic data, accurate calculations of collisional parameters, and bibliography on spectral line profiles and shifts provided much needed information for plasma physics, astrophysics, lithography, fusion research, and other fields of science. We present a brief overview of the atomic physics research published in JPCRD over its first 50 years.

APA, Harvard, Vancouver, ISO, and other styles

33

Hofmann, Werner. "Perspectives from CTA in relativistic astrophysics." International Journal of Modern Physics D 26, no. 03 (2017): 1730005. http://dx.doi.org/10.1142/s0218271817300051.

Full text

Abstract:

The Cherenkov telescope array (CTA) is a next-generation observatory for very high energy (VHE) gamma-ray astronomy. With one array of imaging atmospheric Cherenkov telescopes each in the Northern and Southern Hemispheres, CTA will provide full-sky coverage, enhance flux sensitivity by one order of magnitude compared to current instruments, cover gamma-ray energies from 20 GeV to 300 GeV, and provide a wide field of view with angular resolution of a few arc-minutes. Science themes to be addressed by the CTA observatory include (i) understanding the origin of relativistic cosmic particles, and the role these play in the evolution of star forming systems and galaxies, (ii) probing extreme environments such as neutron stars and black holes, but also the cosmic voids, and (iii) exploring frontiers in physics such as the nature of dark matter. With its superior performance, the prospects for CTA combine guaranteed science — the in-depth understanding of known objects and mechanisms — with anticipated detection of new classes of gamma-ray emitters and new phenomena, and a very significant potential for fundamentally new discoveries.

APA, Harvard, Vancouver, ISO, and other styles

34

Anguma, Simon, and Edward Jurua. "Status of Astronomy at Mbarara University of Science and Technology." Proceedings of the International Astronomical Union 5, S260 (2009): 674–78. http://dx.doi.org/10.1017/s1743921311003000.

Full text

Abstract:

AbstractIn this paper, we describe the role astronomy has played in interesting students towards taking physics as a major subject during their final year in Mbarara University of Science and Technology (MUST). This has resulted into some former students from MUST taking up postgraduate studies in Astrophysics and Space Science in South African Universities. The plans to strengthen and develop Astronomy in Uganda are also discussed, and in particular, the strategies for organizing the IYA2009 are outlined.

APA, Harvard, Vancouver, ISO, and other styles

35

Ho, Luis C. "Kavli Institute for Astronomy and Astrophysics at Peking University: An International Center for Excellence in China." Asia Pacific Physics Newsletter 03, no. 02 (2014): 45. http://dx.doi.org/10.1142/s2251158x14000332.

Full text

Abstract:

The Kavli Foundation ( http://www.kavlifoundation.org ) is a US-based private philanthropic organization "dedicated to advancing science for the benefit of humanity, promoting public understanding of scientific research, and supporting scientists and their work." It supports four major areas of basic research, astrophysics, nanoscience, neuroscience, and theoretical physics, through a network of 17 institutes worldwide. Every two years, it awards the prestigious Kavli Prize to "recognize scientists for their seminal advances in astrophysics, nanoscience and neuroscience."

APA, Harvard, Vancouver, ISO, and other styles

36

Lück, Wolfgang. "The PHYS Database: A New Cooperation with AAA." International Astronomical Union Colloquium 110 (1989): 87–88. http://dx.doi.org/10.1017/s0252921100003018.

Full text

Abstract:

Since 1979 the Fachinformationszentrum Karlsruhe produces the bibliographic database PHYS which covers the worldwide literature in physics. The database is available on STN International. The database contains about 1,2 million citations in all fields of physics ranging from mathematical physics, elementary particles and field theories, nuclear, atomic and molecular physics, optics, acoustics and fluid dynamics, plasma physics, condensed matter physics, materials science, physical chemistry and biophysics up to geophysics, astronomy and astrophysics. The annual update contains more than 120.000 citations. The database is updated bimonthly. All kinds of literature are included from journal articles, conference papers, books and reports up to dissertations. The citations in the database are in English, publications in other languages have translated English title and abstract. Astronomy and astrophysics are covered in PHYS completely as possible. In 1987 there were more than 21.000 citations in these fields. There are many citations which are classified in PHYS into other fields like atomic or plasma physics and optics and which are not numbered to astronomy but may have a specific relevance for astronomers.

APA, Harvard, Vancouver, ISO, and other styles

37

STAMATIKOS, MICHAEL. "GRB ASTROPHYSICS IN THE SWIFT ERA AND BEYOND." International Journal of Modern Physics D 18, no. 10 (2009): 1567–70. http://dx.doi.org/10.1142/s0218271809015631.

Full text

Abstract:

Gamma-ray Bursts (GRBs) are relativistic cosmological beacons of transient high energy radiation whose afterglows span the electromagnetic spectrum. Theoretical expectations of correlated neutrino emission position GRBs at an astrophysical nexus for a metamorphosis in our understanding of the Cosmos. This new dawn in the era of experimental (particle) astrophysics and cosmology is afforded by current facilities enabling the novel astronomy of high energy neutrinos, in concert with unprecedented electromagnetic coverage. In that regard, GRBs represent a compelling scientific theme that may facilitate fundamental breakthroughs in the context of Swift, Fermi and IceCube. Scientific synergy will be achieved by leveraging the combined sensitivity of contemporaneous ground-based and satellite observatories, thus optimizing their collective discovery potential. Hence, the advent of GRB multi-messenger astronomy may cement an explicit connection to fundamental physics, via nascent cosmic windows, throughout the next decade.

APA, Harvard, Vancouver, ISO, and other styles

38

Longair, M. S. "The Astrophysics of the Future." International Astronomical Union Colloquium 123 (1990): 421–26. http://dx.doi.org/10.1017/s0252921100077381.

Full text

Abstract:

It is with some trepidation that I set down these thoughts. The history of physics and astronomy is littered with pontifications about the future, most of which simply end up embarrassing their authors. There are many projects which can be regarded as very safe bets but these might not be the ones which totally transform the nature of the discipline. The situation is analogous to that in the early 1950s when extragalactic astronomy simply meant optical astronomy since there was no other way of carrying out such studies – few would regard that as an adequate position nowadays. Similarly, it is difficult nowadays to imagine cosmology without the Microwave Background Radiation. Thus, the problem for the prognosticator is to tread the narrow line between science fiction and a simple extrapolation of what we do now with our facilities. It is in the spirit of this meeting to concentrate upon space observatories but I believe that it is instructive to look at the whole of astronomy, both from space and from the ground.

APA, Harvard, Vancouver, ISO, and other styles

39

Rieger, Frank. "Gamma-Ray Astrophysics in the Time Domain." Galaxies 7, no. 1 (2019): 28. http://dx.doi.org/10.3390/galaxies7010028.

Full text

Abstract:

The last few years have seen gamma-ray astronomy maturing and advancing in the field of time-domain astronomy, utilizing source variability on timescales over many orders of magnitudes, from a decade down to a few minutes and shorter, depending on the source. This review focuses on some of the key science issues and conceptual developments concerning the timing characteristics of active galactic nuclei (AGN) at gamma-ray energies. It highlights the relevance of adequate statistical tools and illustrates that the developments in the gamma-ray domain bear the potential to fundamentally deepen our understanding of the nature of the emitting source and the link between accretion dynamics, black hole physics, and jet ejection.

APA, Harvard, Vancouver, ISO, and other styles

40

Porter, T. A., G. Jóhannesson, and I. V. Moskalenko. "The GALPROP Cosmic-ray Propagation and Nonthermal Emissions Framework: Release v57." Astrophysical Journal Supplement Series 262, no. 1 (2022): 30. http://dx.doi.org/10.3847/1538-4365/ac80f6.

Full text

Abstract:

Abstract The past decade has brought impressive advances in the astrophysics of cosmic rays (CRs) and multiwavelength astronomy, thanks to the new instrumentation launched into space and built on the ground. Modern technologies employed by those instruments provide measurements with unmatched precision, enabling searches for subtle signatures of dark matter and new physics. Understanding the astrophysical backgrounds to better precision than the observed data is vital in moving to this new territory. A state-of-the-art CR propagation code, called GalProp, is designed to address exactly this challenge. Having 25 yr of development behind it, the GalProp framework has become a de facto standard in the astrophysics of CRs, diffuse photon emissions (radio to γ-rays), and searches for new physics. GalProp uses information from astronomy, particle physics, and nuclear physics to predict CRs and their associated emissions self-consistently, providing a unifying modeling framework. The range of its physical validity covers 18 orders of magnitude in energy, from sub-keV to PeV energies for particles and from μeV to PeV energies for photons. The framework and the data sets are public and are extensively used by many experimental collaborations and by thousands of individual researchers worldwide for interpretation of their data and for making predictions. This paper details the latest release of the GalProp framework and updated cross sections, further developments of its initially auxiliary data sets for models of the interstellar medium that grew into independent studies of the Galactic structure—distributions of gas, dust, radiation, and magnetic fields—as well as the extension of its modeling capabilities. Example applications included with the distribution illustrating usage of the new features are also described.

APA, Harvard, Vancouver, ISO, and other styles

41

Piro, Luigi. "Multi-messenger science with Athena and Future Multi-messenger Observatories." Proceedings of the International Astronomical Union 16, S363 (2020): 135–48. http://dx.doi.org/10.1017/s1743921322002009.

Full text

Abstract:

AbstractScientific synergies between Athena and some of the key multi-messenger facilities that should be operative concurrently with Athena are presented. These facilities include LIGO A+, Advanced Virgo+ and future detectors for ground-based observation of gravitational waves (GW), LISA for space-based observations of GW, IceCube and KM3NeT for neutrino observations, CTA for very high energy observations. Multimessenger synergy science themes discussed here include pressing issues in the field of Astrophysics, Cosmology and Fundamental physics such as: the central engine and jet physics in compact binary mergers, accretion processes and jet physics in SMBBHs and in compact stellar binaries, the equation of state in neutron stars, cosmic accelerators and the origin of cosmic rays, the origin of intermediate and high-Z elements in the Universe, the Cosmic distance scale and tests of General Relativity and Standard Model. Observational strategies for implementing the identified science topics are also discussed.

APA, Harvard, Vancouver, ISO, and other styles

42

Heng, Kevin. "Balmer-Dominated Shocks: A Concise Review." Publications of the Astronomical Society of Australia 27, no. 1 (2010): 23–44. http://dx.doi.org/10.1071/as09057.

Full text

Abstract:

AbstractA concise and critical review of Balmer-dominated shocks (BDSs) is presented, summarizing the state of theory and observations, including models with/without shock precursors and their synergy with atomic physics. Observations of BDSs in supernova remnants are reviewed on an object-by-object basis. The relevance of BDSs towards understanding the acceleration of cosmic rays in shocks is emphasized. Probable and possible detections of BDSs in astrophysical objects other than supernova remnants, including pulsar wind nebulae and high-redshift galaxies, are described. The case for the continued future of studying BDSs in astrophysics is made, including their relevance towards understanding electron–ion temperature equilibration in collisionless shocks.

APA, Harvard, Vancouver, ISO, and other styles

43

Srećković, Vladimir, Milan Dimitrijević, and Nikolai Bezuglov. "Special Issue on Atomic and Ionic Collisions with Formation of Quasimolecules." Atoms 7, no. 1 (2018): 3. http://dx.doi.org/10.3390/atoms7010003.

Full text

Abstract:

Many areas of science today, like atomic and molecular physics, nuclear physics, astrophysics, laboratory plasma research etc., depend on data for ionic, atomic, and molecular collision processes. The purpose of the Special Issue “Atomic and Ionic Collisions with Formation of Quasimolecules” in Atoms is to engage a broad community of researchers to consolidate knowledge, make new discoveries, and to continue the exchange of ideas.

APA, Harvard, Vancouver, ISO, and other styles

44

Rengel, M. "About the atomic and molecular databases in the planetary community – A contribution in the Laboratory Astrophysics Data WG IAU 2022 GA session." Proceedings of the International Astronomical Union 18, S371 (2022): 87–91. http://dx.doi.org/10.1017/s1743921323000169.

Full text

Abstract:

AbstractThis paper corresponds to an invited oral contribution to the session 5A organised by the IAU inter-commission B2-B5 working group (WG) “Laboratory Astrophysics Data Compilation, Validation and Standardization: from the Laboratory to FAIR usage in the Astronomical Community” at the IAU 2022 General Assembly (GA) Rengel (2022). This WG provides a platform where to discuss the Findability, Accessibility,Interoperability, Reuse (FAIR) usage of laboratory Atomic and Molecular (A&M) data in astronomy and astrophysics.A&M data play a key role in the understanding of the physics and chemistry of processes in several research topics, including planetary science and interdisciplinary research in particular the atmospheres of planets and planetary explorations, etc. Databases, compilation of spectroscopic parameters, and facility tools are used by computer codes to interpret spectroscopic observations and simulate them. In this talk I presented existing A&M databases of interest to the planetary community focusing on access, organisation, infrastructures, limitations and issues, etc.

APA, Harvard, Vancouver, ISO, and other styles

45

Neumann, Hans L. "Astronomy and Astrophysics in the Curricula of the German Gymnasium." International Astronomical Union Colloquium 105 (1990): 277–80. http://dx.doi.org/10.1017/s0252921100086917.

Full text

Abstract:

The school system in the Federal Republic of Germany is generally of the classical European type as defined by D. Wentzel in his paper for this colloquium. Children enter school at age 6. After 4 years of primary school they enter secondary schools. The gymnasium type lasts for 9 or 7 years, depending on the state. The final exam (Abitur) entitles the students to go to university.The interest of pupils in learning about astronomy is generally very high. But the usual science or physics teacher’s education in most of our federal states does not include any thorough knowledge of astronomy; physics curricula are overcrowded with traditional matter and more and more modern technical applications, without reducing the time allotted to old topics. Practically speaking, there are very few lessons left that might be used for astronomy teaching.

APA, Harvard, Vancouver, ISO, and other styles

46

Onuora, Lesley I. "Astronomy in Nigeria." Highlights of Astronomy 10 (1995): 666–67. http://dx.doi.org/10.1017/s1539299600012491.

Full text

Abstract:

One major problem in Africa in general is to convince governments and agencies that astronomy is relevant to Africa. Attention has been focussed on technology transfer, neglecting science and research. This attitude encourages the continued dependence on industrialized countries.In Nigeria there has been some success in projecting the idea that Space Science does not just mean remote sensing, but that basic space science, i.e. astronomy and astrophysics, cosmology, planetary science etc. is important and necessary. Evidence of this is that Nigeria’s expert committee on space policy recommended that one of three proposed National Centres should be for basic space science, laying emphasis on fundamental physics, astronomy and astrophysics, solarterrestrial interactions and their influence on climate, planetary and atmospheric studies. In addition, the Government of Nigeria hosted the Third UN/ESA Workshop on Basic Space Science in October, 1993.

APA, Harvard, Vancouver, ISO, and other styles

47

Villaescusa-Navarro, Francisco, Jupiter Ding, Shy Genel, et al. "Cosmology with One Galaxy?" Astrophysical Journal 929, no. 2 (2022): 132. http://dx.doi.org/10.3847/1538-4357/ac5d3f.

Full text

Abstract:

Abstract Galaxies can be characterized by many internal properties such as stellar mass, gas metallicity, and star formation rate. We quantify the amount of cosmological and astrophysical information that the internal properties of individual galaxies and their host dark matter halos contain. We train neural networks using hundreds of thousands of galaxies from 2000 state-of-the-art hydrodynamic simulations with different cosmologies and astrophysical models of the CAMELS project to perform likelihood-free inference on the value of the cosmological and astrophysical parameters. We find that knowing the internal properties of a single galaxy allows our models to infer the value of Ωm, at fixed Ωb, with a ∼10% precision, while no constraint can be placed on σ 8. Our results hold for any type of galaxy, central or satellite, massive or dwarf, at all considered redshifts, z ≤ 3, and they incorporate uncertainties in astrophysics as modeled in CAMELS. However, our models are not robust to changes in subgrid physics due to the large intrinsic differences the two considered models imprint on galaxy properties. We find that the stellar mass, stellar metallicity, and maximum circular velocity are among the most important galaxy properties to determine the value of Ωm. We believe that our results can be explained by considering that changes in the value of Ωm, or potentially Ωb/Ωm, affect the dark matter content of galaxies, which leaves a signature in galaxy properties distinct from the one induced by galactic processes. Our results suggest that the low-dimensional manifold hosting galaxy properties provides a tight direct link between cosmology and astrophysics.

APA, Harvard, Vancouver, ISO, and other styles

48

Balabanski, Dimiter L. "Nuclear astrophysics studies with γ-ray beams: What do we expect to learn from them?" EPJ Web of Conferences 275 (2023): 01002. http://dx.doi.org/10.1051/epjconf/202327501002.

Full text

Abstract:

An overview of the main directions of present-day studies with quasimonochromatic γ beams is discussed with an emphasis on the research opportunities which will be offered at the Extreme Light Infrastructure Nuclear Physics (ELI-NP) facility at Magurele near Bucharest in Romania. Experiments with γ beams at the extremes of high temperatures are outlined, with an emphasis on prospective studies related to nuclear astrophysics and astroparticle physics. Some of the experimental setups for nuclear structure, reaction, and astrophysics studies, which are available at ELI-NP, are described.

APA, Harvard, Vancouver, ISO, and other styles

49

Neupane, Sudeep. "An exemplary developing astronomy movement in Nepal." Proceedings of the International Astronomical Union 10, H16 (2012): 566. http://dx.doi.org/10.1017/s1743921314012174.

Full text

Abstract:

AbstractAstronomy and space science education had been given least importance by Nepalese government in the past. The modern astronomy movement is believed to have started when an official observation programme of Haley's comet was organized by Royal Nepal Academy of Science and Technology (RONAST) in 1986. Following the huge pressure from the scientific community, the Nepal government (Kingdom of Nepal at that time) established B.P. Koirala Memorial Planetarium, Observatory and Science Museum Development Board in 1992. Initiatives of the project started with observatory set up and the development of astrophysics syllabus for university students. Astrophysics is included as an elective paper in the Physics masters course. The lead astrophysicist of Nepal Dr. Binil Aryal is running a research group in Tribhuvan University since 2005 which has a significant number of international publications. The developing government initiatives and achievements will be discussed.In 2007, a group of astronomy enthusiastic students along with amateurs working independently in past established Nepal Astronomical Society (NASO), which surprisingly increased the amateur activities and inspired other amateur groups to revive. During IYA 2009, more than 80 outreach and observation events were organized solely by NASO. NASO was able to collaborate with many international programmes and projects like GHOU/GTTP, EurAstro, AWB, UNAWE, SGAC, Star Peace, TWAN etc during and beyond IYA2009. Currently Nepal is recognized as the most eventful country of outreach and astronomy education among the amateur community. The success story of the astronomy movement and the local difficulties while organizing the events will be explained.

APA, Harvard, Vancouver, ISO, and other styles

50

Cusin, Giulia, Irina Dvorkin, Cyril Pitrou, and Jean-Philippe Uzan. "Stochastic gravitational wave background anisotropies in the mHz band: astrophysical dependencies." Monthly Notices of the Royal Astronomical Society: Letters 493, no. 1 (2019): L1—L5. http://dx.doi.org/10.1093/mnrasl/slz182.

Full text

Abstract:

ABSTRACT We show that the anisotropies of the astrophysical stochastic gravitational wave background in the mHz band have a strong dependence on the modelling of galactic and sub-galactic physics. We explore a wide range of self-consistent astrophysical models for stellar evolution and for the distribution of orbital parameters, all calibrated such that they predict the same number of resolved mergers to fit the number of detections during LIGO/Virgo O1 + O2 observations runs. We show that different physical choices for the process of black hole (BH) collapse and cut-off in the BH mass distribution give fractional differences in the angular power spectrum of anisotropies of up to 50 per cent on all angular scales. We also point out that the astrophysical information which can be extracted from anisotropies is complementary to the isotropic background and individual mergers. These results underline the interest in the anisotropies of the stochastic gravitational wave background as a new and potentially rich field of research, at the cross-road between astrophysics and cosmology.

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!