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Relevant bibliographies by topics / Micro-lensing

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Academic literature on the topic 'Micro-lensing'

Author: Grafiati

Published: 20 February 2023

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Journal articles on the topic "Micro-lensing"

1

Schechter, Paul L., and Joachim Wambsganss. "The dark matter content of lensing galaxies at 1.5 Re." Symposium - International Astronomical Union 220 (2004): 103–8. http://dx.doi.org/10.1017/s0074180900182944.

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Many quasars that are gravitationally lensed exhibit flux ratio “anomalies” that cannot be explained under the hypothesis that the lensing potential is smooth on scales smaller than 1 kpc. Micro-lensing by stars is a natural source of granularity in the lens potential. the character of the expected fluctuations due to Micro-lensing depends sensitively on the relative surface densities of micro-lenses (stars) and smoothly distributed (dark) matter. Observations of flux ratios may therefore be used to infer the ratio of stellar to dark matter along the line of sight – typically at impact paramet

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Zakharov, Alexander F. "Gravitational lensing: From micro to nano." New Astronomy Reviews 53, no. 7-10 (2009): 202–8. http://dx.doi.org/10.1016/j.newar.2009.08.002.

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Kayser, R., S. Refsdal, R. Stabell, and B. Grieger. "Astrophysical Applications of Gravitational Micro-Lensing." Symposium - International Astronomical Union 124 (1987): 767–70. http://dx.doi.org/10.1017/s0074180900159893.

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Gravitational micro-lensing due to stars in the deflecting galaxy influences the brightness and the spectra of the macro-images. Thus differences in the spectra of different macro-images are not automatically an argument against gravitational lensing. Furthermore changes in the spectra due to micro-lensing may give informations on the quasar structure. From high amplification events the brightness profile of the source may be obtained. The time scale of the high amplification event is proportional to the source radius and inverse proportional to the transversal velocity. Due to the large brigh

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Refsdal, Sjur, and Rainer Kayser. "Some Remarks on Gravitational Micro-Lensing." Symposium - International Astronomical Union 134 (1989): 267–68. http://dx.doi.org/10.1017/s0074180900141026.

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Gravitational micro-lensing can be used to obtain information 1) on the inner structure of active galactic nuclei and 2) on the distribution of compact masses in the range 10−4 … 102 solar masses. A regular monitoring of the most promising candidates for micro-lensing should be carried out. The strongest candidate is the macro-lensed quasar 2237+030, for which we expect a change in the luminosity ratio between the images of about 5 per cent per year.

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Chang, K. "Gravitational Micro-lensing Effects and Astrophysical Applications." Publications of the Astronomical Society of Australia 9, no. 2 (1991): 215–18. http://dx.doi.org/10.1017/s1323358000023900.

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AbstractThe most favourable methods of observing the phenomenon of gravitational lensing are through high-amplification events and the time delay between the images. These effects provide us with the information to determine the Hubble parameter and the matter distribution in the universe. The image properties due to micro-lensing can be used to find the size and structure of the source.

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Grieger, B., R. Kayser, and S. Refsdal. "A parallax effect due to gravitational micro-lensing." Nature 324, no. 6093 (1986): 126–27. http://dx.doi.org/10.1038/324126a0.

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Wiktorowicz, Grzegorz, Matthew Middleton, Norman Khan, Adam Ingram, Poshak Gandhi, and Hugh Dickinson. "Predicting the self-lensing population in optical surveys." Monthly Notices of the Royal Astronomical Society 507, no. 1 (2021): 374–84. http://dx.doi.org/10.1093/mnras/stab2135.

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ABSTRACT The vast majority of binaries containing a compact object and a regular star spend most of their time in a quiescent state where no strong interactions occur between components. Detection of these binaries is extremely challenging and only few candidates have been detected through optical spectroscopy. Self-lensing represents a new means of detecting compact objects in binaries, where gravitational lensing of the light from the visible component by the compact object produces periodic optical flares. Here we show that current and planned large-area optical surveys can detect a signifi

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Weisenbach, Luke, Paul Schechter, and Joachim Wambsganss. "Magnifications of paired micro-images emerging from a micro-lensing critical curve." Monthly Notices of the Royal Astronomical Society 488, no. 3 (2019): 3452–62. http://dx.doi.org/10.1093/mnras/stz1958.

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Abstract Studies of the inner regions of micro-lensed active galactic nucleus during caustic crossing events have often relied upon the approximation that the magnification near a fold caustic is inversely proportional to the square root of the source-caustic distance. We examine here the behaviour of the individual micro-images (one a micro-minimum of the light traveltime, the other a micro-saddle) that emerge as a point source crosses a micro-fold caustic. We provide a variety of statistics on both the behaviour of the two newly created micro-images and some parameters that appear in higher

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Gopal-Krishna and Kandaswamy Subramanian. "Gravitational micro-lensing of the relativistic jets of quasars." Nature 349, no. 6312 (1991): 766–68. http://dx.doi.org/10.1038/349766a0.

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Dey, Pradip Kumar, Soumen Das, and Pranabendu Ganguly. "Fabrication of polymer micro-tip by optical lensing technique." Microsystem Technologies 18, no. 5 (2012): 623–28. http://dx.doi.org/10.1007/s00542-012-1483-3.

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Dissertations / Theses on the topic "Micro-lensing"

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Reza, Syed Azer. "Micro-electro-mechanical systems (MEMS) and agile lensing-based modules for communications, sensing and signal processing." Orlando, Fla. : University of Central Florida, 2010. http://purl.fcla.edu/fcla/etd/CFE0003143.

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Reza, Syed. "MICRO-ELECTRO-MECHANICAL SYSTEMS (MEMS) AND AGILE LENSING-BASED MODULES FOR COMMUNICATIONS, SENSING AND SIGNAL PROCESSING." Doctoral diss., University of Central Florida, 2010. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3463.

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This dissertation proposes the use of the emerging Micro-Electro-Mechanical Systems (MEMS) and agile lensing optical device technologies to design novel and powerful signal conditioning and sensing modules for advanced applications in optical communications, physical parameter sensing and RF/optical signal processing. For example, these new module designs have experimentally demonstrated exceptional features such as stable loss broadband operations and high > 60 dB optical dynamic range signal filtering capabilities. The first part of the dissertation describes the design and demonstration of

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Yee, Jennifer Chun Ming. "Exploring the Extremes of Exoplanet Detection and Characterization in High-Magnification Microlensing Events." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1373289490.

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Benabed, Karim. "Effets de lentille gravitationnelle sur le rayonnement de fond cosmique." Phd thesis, Université Paris Sud - Paris XI, 2001. http://tel.archives-ouvertes.fr/tel-00001288.

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On s'intéressera, dans ce mémoire, à certains aspects phénoménologiques de l'évolution des grandes structures de l'univers, dans le cadre des modèles inflationnaires. La relativité générale prédit que le trajet des rayons lumineux est perturbé par les puits de potentiels gravitationnels ; on appelle ce phénomène, effet de lentille gravitationnelle. On donnera une description très précise de cet effet sur la lumière du rayonnement de fond micro-onde, les anisotropies de sa température et sa polarisation. Pour ce faire, après avoir exposé les grandes lignes du modèle, on rappellera comment se ca

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Walters, SJ. "A Kinematical approach to gravitational lensing." Thesis, 2014. https://eprints.utas.edu.au/22400/1/whole-Walters-thesis-2014.pdf.

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The deflection of light by massive bodies has been of interest to mathematicians and physicists from time to time since Newton suggested the possibility in his 1704 work, “Opticks”. This deflection was calculated in the late eighteenth and early nineteenth centuries, treating light as a classical particle. The deflection was again calculated by Einstein in the early twentieth century, using his new general theory of relativity, to be twice the previous classical result. The measurement of the deflection of light passing close by the Sun was widely publicized as a dramatic confirmation o

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Books on the topic "Micro-lensing"

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Schneider, Peter, Christopher S. Kochanek, and Joachim Wambsganss. Gravitational Lensing: Strong, Weak and Micro. Springer Berlin Heidelberg, 2006. http://dx.doi.org/10.1007/978-3-540-30310-7.

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Schneider, Peter, Joachim Wambsganss, Philippe Jetzer, Christopher Kochanek, and Georges Meylan. Gravitational Lensing : Strong, Weak and Micro: Saas-Fee Advanced Course 33. Springer Berlin / Heidelberg, 2010.

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Schneider, Peter, Philippe Jetzer, Christopher Kochanek, Pierre North, and Georges Meylan. Gravitational Lensing : Strong, Weak and Micro: Saas-Fee Advanced Course 33. Springer, 2006.

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(Editor), Georges Meylan, Philippe Jetzer (Editor), and Pierre North (Editor), eds. Gravitational Lensing: Strong, Weak and Micro: Saas-Fee Advanced Course 33 (Saas-Fee Advanced Courses). Springer, 2006.

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Book chapters on the topic "Micro-lensing"

1

Kayser, R., S. Refsdal, R. Stabell, and B. Grieger. "Astrophysical Applications of Gravitational Micro-Lensing." In Observational Cosmology. Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-009-3853-3_91.

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Refsdal, Sjur, and Rainer Kayser. "Some Remarks on Gravitational Micro-Lensing." In Active Galactic Nuclei. Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-0963-2_79.

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Grieger, B., R. Kayser, and S. Refsdal. "Gravitational Micro-Lensing as a Clue to Quasar Structure." In The Post-Recombination Universe. Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-009-3035-3_40.

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Hardy, S. J., and M. A. Walker. "Binary Micro-Parallax Effects." In Astrophysical Applications of Gravitational Lensing. Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-0221-3_59.

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Binney, James. "6. Relativistic astrophysics." In Astrophysics: A Very Short Introduction. Oxford University Press, 2016. http://dx.doi.org/10.1093/actrade/9780198752851.003.0006.

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‘Relativistic astrophysics’ outlines the relativity theory and lists some situations where this theory is needed: radio galaxies, micro-quasars, gamma rays, cosmic rays, neutron stars, x-ray sources, the solar system, and the universe. It goes on to explain muon lifetimes, rest-mass energy, plasma jets, shocks and particle acceleration, and synchrotron radiation. Einstein’s theory of general relativity is dependent on non-linear equations and the only exact solutions of Einstein’s equations that we have are ones with special symmetries. The phenomena of gravitational redshift, gravitational lensing, gravitational microlensing, deflection of light by the Sun, Shapiro delays, and pulsars and gravitational waves are then discussed.

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Conference papers on the topic "Micro-lensing"

1

BOZZA, V. "TRAJECTORIES OF THE IMAGES IN BINARY MICRO LENSING." In Proceedings of the Third International Workshop. WORLD SCIENTIFIC, 2001. http://dx.doi.org/10.1142/9789812811363_0027.

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De Tommasi, E., L. De Stefano, I. Rea, L. Moretti, M. De Stefano, and I. Rendina. "Light micro-lensing effect in biosilica shells of diatoms microalgae." In Photonics Europe, edited by Hugo Thienpont, Peter Van Daele, Jürgen Mohr, and Mohammad R. Taghizadeh. SPIE, 2008. http://dx.doi.org/10.1117/12.781021.

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