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Relevant bibliographies by topics / Ionized interstellar medium

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Academic literature on the topic 'Ionized interstellar medium'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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Journal articles on the topic "Ionized interstellar medium"

1

Mishra, Sanjay K., Mahendra Singh Sodha, and Sweta Srivastava. "Temperature of interstellar warm ionized medium." Astrophysics and Space Science 344, no. 1 (2012): 193–203. http://dx.doi.org/10.1007/s10509-012-1317-x.

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Langer, W. D., J. L. Pineda, P. F. Goldsmith, et al. "The dense warm ionized medium in the inner Galaxy." Astronomy & Astrophysics 651 (July 2021): A59. http://dx.doi.org/10.1051/0004-6361/202040223.

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Context. Ionized interstellar gas is an important component of the interstellar medium and its lifecycle. The recent evidence for a widely distributed highly ionized warm interstellar gas with a density intermediate between the warm ionized medium (WIM) and compact H II regions suggests that there is a major gap in our understanding of the interstellar gas. Aims. Our goal is to investigate the properties of the dense WIM in the Milky Way using spectrally resolved SOFIA GREAT [N II] 205 μm fine-structure lines and Green Bank Telescope hydrogen radio recombination lines (RRL) data, supplemented

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Rickett, Barney. "Intermittency and Anisotropy in the Ionized Interstellar Medium." Proceedings of the International Astronomical Union 13, S337 (2017): 283–86. http://dx.doi.org/10.1017/s1743921317009206.

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AbstractThe discovery of pulsars was closely followed by the discovery of dispersion and scattering in the interstellar plasma (ionized interstellar medium - IISM). The rich phenomena of scattering and scintillation have since been successfully modelled as propagation through a statistically uniform plasma turbulence with an isotropic Kolmogorov spectrum of density. However, this enticingly simple model fails to explain the many recent observations, that show anisotropic scattering from highly localized regions of the IISM often referred to as phase screens. I summarize the recent evidence fro

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Ferguson, Annette M. N., Rosemary F. G. Wyse, and J. S. Gallagher. "The Spectacular Ionized Interstellar Medium of NGC 55." Astronomical Journal 112 (December 1996): 2567. http://dx.doi.org/10.1086/118203.

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Reynolds, R. J. "Warm ionized gas in the local interstellar medium." Advances in Space Research 34, no. 1 (2004): 27–34. http://dx.doi.org/10.1016/j.asr.2003.02.059.

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Haverkorn, Marijke. "Turbulence in the diffuse magneto-ionized medium: observational aspects." Proceedings of the International Astronomical Union 11, A29B (2015): 720–22. http://dx.doi.org/10.1017/s1743921316006529.

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AbstractTurbulence in the interstellar medium is ubiquitous. The turbulent energy density in the gas is significant, and comparable to energy densities of magnetic fields and cosmic rays. Studies of the turbulent interstellar gas in the Milky Way have mostly focused on the neutral gas component, since various spectral lines can give velocity information. Probing turbulent properties in the ionized gas, let alone in magnetic fields, is observationally more difficult. A number of observational methods are discussed below which provide estimates of the maximum scale of fluctuations, the Mach numb

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Walterbos, R. A. M. "Diffuse Ionized Gas in Nearby Galaxies." Symposium - International Astronomical Union 144 (1991): 223–32. http://dx.doi.org/10.1017/s0074180900089117.

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We discuss the distribution and spectral characteristics of diffuse ionized gas in nearby galaxies. The existence of this elusive component of the interstellar medium (ISM), also referred to as the Warm Ionized Medium, is by now well established from deep imaging and spectroscopic surveys in several emission lines in external galaxies. Diffuse ionized gas is characterized by a relatively high ratio of [SII] over Hα intensities, typically twice as high as for discrete HII regions. The diffuse gas has been mapped in both edge-on and more face-on galaxies providing information on the radial and v

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Hill, A., R. Reynolds, L. Haffner, K. Wood, and G. Madsen. "Modern view of the warm ionized medium." Proceedings of the International Astronomical Union 10, H16 (2012): 574–75. http://dx.doi.org/10.1017/s1743921314012228.

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AbstractWe review the observational evidence that the warm ionized medium (WIM) is a major and physically distinct component of the Galactic interstellar medium. Although up to ~ 20% of the faint, high-latitude Hα emission in the Milky Way may be scattered light emitted in midplane Hii regions, recent scattered light models do not effectively challenge the well-established properties of the WIM.

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Stanimirović, Snežana, and Ellen G. Zweibel. "Atomic and Ionized Microstructures in the Diffuse Interstellar Medium." Annual Review of Astronomy and Astrophysics 56, no. 1 (2018): 489–540. http://dx.doi.org/10.1146/annurev-astro-081817-051810.

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It has been known for half a century that the interstellar medium (ISM) of our Galaxy is structured on scales as small as a few hundred kilometers, more than 10 orders of magnitude smaller than typical ISM structures and energy input scales. In this review we focus on neutral and ionized structures on spatial scales of a few to ∼104AU, which appear to be highly overpressured, as these have the most important role in the dynamics and energy balance of interstellar gas: the tiny scale atomic structures (TSASs) and extreme scattering events (ESEs) as the most overpressured example of the tiny sca

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Chu, You-Hua. "The violent interstellar medium of the Magellanic Cloud System." Proceedings of the International Astronomical Union 4, S256 (2008): 166–77. http://dx.doi.org/10.1017/s174392130802841x.

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AbstractThe interstellar gas of the Magellanic System is subject to the harassment of tidal interactions on galaxy-wide scales and stellar energy feedback on sub-galactic scales. Hisurveys of the Magellanic System have produced spectacular images of the tidally displaced interstellar gas in the Magellanic Bridge and Streams. Multi-wavelength observations of the interstellar gas in the Magellanic Clouds have revealed gas components in physical conditions ranging from cold molecular cloud to hot ionized coronal gas. While stellar energy feedback is responsible for heating and dispersing interste

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Dissertations / Theses on the topic "Ionized interstellar medium"

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Geyer, Marisa. "Pulsar scattering and the ionized interstellar medium." Thesis, University of Oxford, 2017. http://ora.ox.ac.uk/objects/uuid:d20b2f33-f1ed-4c56-9227-cb12affb06d0.

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Fifty years after the discovery of the first pulsating neutron star, the field of pulsar science has grown into a multidisciplinary research field, working to address a wide range of problems in astrophysics - from stellar evolution models to high precision tests of General Relativity to analysing the detailed structure of the Interstellar Medium in the Milky Way. Over 2500 Galactic pulsars have been discovered. The next generation telescopes, such as the Square Kilometre Array, promise to discover the complete observable Milky Way population, of several tens of thousands, over the next decade

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Rivera-Thorsen, Thøger Emil. "Ionized and atomic interstellar medium in star-forming galaxies." Doctoral thesis, Stockholms universitet, Institutionen för astronomi, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-134526.

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Star forming galaxies in the local Universe are an important laboratory for learning about conditions in the distant, early Universe. With a high frequency of interactions and mergers, strong star formation activity, and complex kinematics and often disturbed or irregular morphology, these galaxies are believed to be the best local analogs to the galaxies at early times, and can therefore help understand the galaxies we observe at high redshifts in the early Universe. These early galaxies in turn hold the key to cosmological insights about the early Universe, including galaxy formation and ear

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Al-Sadooni, Ameerah Aboalsawd Hammadi. "The impact of ionized outflows on the surrounding interstellar medium in disc galaxies." Thesis, Keele University, 2018. http://eprints.keele.ac.uk/5446/.

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The aim of this thesis was to study the evolution of spiral galaxies by quantifying the impact of the ionized outflows in spiral galaxies on the surrounding interstellar medium. This project was based on optical Fabry-P ́erot and long-slit observations with the instrument RSS (Robert Stobie Spectrograph) at the 10 m Southern African Large Telescope (SALT). I focussed on two types of nearby spirals, the first of which is a face-on spiral galaxy (NGC 300) in order to study the kinematics of outflows from Hii regions, and their impact on their surroundings as well as the present-day chemical abun

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Wagle, Gururaj. "MODELING IONIZED AND MOLECULAR REGIONS OF THE INTERSTELLAR MEDIUM USING THE SPECTRAL SYNTHESIS CODE CLOUDY." UKnowledge, 2014. http://uknowledge.uky.edu/physastron_etds/23.

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The focus of this dissertation is to study the star-forming regions of the interstellar medium (ISM), using two very diverse environments: the Polaris Flare, high-galactic latitude, cirrus cloud complex consisting of several starless molecular cores with no nearby hot stars; and the Orion Nebula, which is the closest massive star forming region. The two environments provide a wide range of physical conditions. It is commonly assumed that the Herschel far-infrared (FIR) fluxes are a good measure of column density, hence, mass of interstellar clouds. We find that the FIR fluxes are insensitive t

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Vidal-García, A., S. Charlot, G. Bruzual, and I. Hubeny. "Modelling ultraviolet-line diagnostics of stars, the ionized and the neutral interstellar medium in star-forming galaxies." OXFORD UNIV PRESS, 2017. http://hdl.handle.net/10150/625298.

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We combine state-of-the-art models for the production of stellar radiation and its transfer through the interstellar medium (ISM) to investigate ultraviolet-line diagnostics of stars, the ionized and the neutral ISM in star-forming galaxies. We start by assessing the reliability of our stellar population synthesis modelling by fitting absorption-line indices in the ISM-free ultraviolet spectra of 10 Large Magellanic Cloud clusters. In doing so, we find that neglecting stochastic sampling of the stellar initial mass function in these young (similar to 10-100 Myr), low-mass clusters affects negl

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Topasna, Gregory A. "The Scattering of H-alpha Emission Associated with the Rosette Nebula in the Monoceros Region Studied Using Polarimetry." Diss., Virginia Tech, 1999. http://hdl.handle.net/10919/27672.

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Polarimetric CCD images of HII regions were obtained using a rotating polarizer device designed, built, and used in conjunction with the Spectral Line Imaging Camera (SLIC) at Virginia Tech's Martin Observatory in Giles County, Virginia. The SLIC uses a narrow bandpass interference filter coupled with a 58 mm camera lens and cryogenically cooled CCD camera to image diffuse, extended H-alpha emission over a 10° angular extent. A rotating polarizer device was placed in front of the H-alpha filter with images recorded at every 45° with respect to a fiducial setting. Stoke's parameters and were ob

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Ignace, Richard. "Asymmetric Shapes of Radio Recombination Lines from Ionized Stellar Winds." Digital Commons @ East Tennessee State University, 2019. https://dc.etsu.edu/etsu-works/5502.

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Recombination line profile shapes are derived for ionized spherical stellar winds at radio wavelengths. It is assumed that the wind is optically thick owing to free-free opacity. Emission lines of arbitrary optical depth are obtained assuming that the free-free photosphere forms in the outer, constant expansion portion of the wind. Previous works have derived analytic results for isothermal winds when the line and continuum source functions are equal. Here, semi-analytic results are derived for unequal source functions to reveal that line shapes can be asymmetric about line center. A parameter

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Ignace, Richard. "Recombination Lines and Free-Free Continua Formed in Asymptotic Ionized Winds: Analytic solution for the radiative transfer." Digital Commons @ East Tennessee State University, 2009. https://dc.etsu.edu/etsu-works/6264.

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In dense hot star winds, the infrared and radio continua are dominated by free‐free opacity and recombination emission line spectra. In the case of a spherically symmetric outflow that is isothermal and expanding at constant radial speed, the radiative transfer for the continuum emission from a dense wind is analytic. Even the emission profile shape for a recombination line can be derived. Key to these derivations is that the opacity scales with only the square of the density. These results are well‐known. Here an extension of the derivation is developed that also allows for line blends and th

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Husemann, Bernd. "The AGN-host galaxy connection : new insights from the extended ionised gas." Phd thesis, Universität Potsdam, 2011. http://opus.kobv.de/ubp/volltexte/2011/5555/.

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Active Galactic Nuclei (AGN) are powered by gas accretion onto supermassive Black Holes (BH). The luminosity of AGN can exceed the integrated luminosity of their host galaxies by orders of magnitude, which are then classified as Quasi-Stellar Objects (QSOs). Some mechanisms are needed to trigger the nuclear activity in galaxies and to feed the nuclei with gas. Among several possibilities, such as gravitational interactions, bar instabilities, and smooth gas accretion from the environment, the dominant process has yet to be identified. Feedback from AGN may be important an important ingredient

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Books on the topic "Ionized interstellar medium"

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Sins: Small Ionized and Neutral Structures in the Diffuse Interstellar Medium. Astronomical Society of the Pacific, 2007.

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1974-, Haverkorn M., and Goss W. M, eds. SINS--small ionized and neutral structures in the diffuse interstellar medium: Proceedings of a workshop held at the National Radio Astronomy Observatory, Socorro, New Mexico, USA, 21-24 May 2006. Astronomical Society of the Pacific, 2007.

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Book chapters on the topic "Ionized interstellar medium"

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Maciel, Walter J. "Interstellar Ionized Nebulae." In Astrophysics of the Interstellar Medium. Springer New York, 2012. http://dx.doi.org/10.1007/978-1-4614-3767-3_8.

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Rand, Richard J. "The Warm Ionized Medium and the Disk-Halo Connectic in Galaxies." In The Interstellar Medium in Galaxies. Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-011-5620-2_4.

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Muñoz, A. Zurita, and J. E. Beckman. "The Properties of the Ionized Interstellar Medium in Spiral Galaxies." In Highlights of Spanish Astrophysics III. Springer Netherlands, 2003. http://dx.doi.org/10.1007/978-94-017-1778-6_44.

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Laval, A., M. Rosado, J. Boulesteix, et al. "Interaction between a stellar wind and the ionized gas in N120 (LMC)." In Structure and Dynamics of the Interstellar medium. Springer Berlin Heidelberg, 1989. http://dx.doi.org/10.1007/bfb0114866.

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Joncas, Gilles, Daniel Durand, C. Kömpe, and R. S. Roger. "The sharpless 187 gas complex: A study of the molecular, atomic, ionized and dust components." In Structure and Dynamics of the Interstellar medium. Springer Berlin Heidelberg, 1989. http://dx.doi.org/10.1007/bfb0114846.

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Caon, N., F. Macchetto, and M. Pastoriza. "A Survey of the Interstellar Medium in Elliptical Galaxies: The Ionized Gas." In New Light on Galaxy Evolution. Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-0229-9_60.

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"Hot Ionized Medium." In Interstellar and Intergalactic Medium. Cambridge University Press, 2021. http://dx.doi.org/10.1017/9781108781596.006.

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"Warm Ionized Medium and Ionized Nebulae." In Interstellar and Intergalactic Medium. Cambridge University Press, 2021. http://dx.doi.org/10.1017/9781108781596.005.

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"Ionized Regions." In Introduction to the Interstellar Medium. Cambridge University Press, 2021. http://dx.doi.org/10.1017/9781108691178.007.

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Tufte, Stephen L., Ronald J. Reynolds, and L. Matthew Haffner. "Probing Interstellar Turbulence in the Warm Ionized Medium using Emission Lines." In Interstellar Turbulence. Cambridge University Press, 1999. http://dx.doi.org/10.1017/cbo9780511564666.006.

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Conference papers on the topic "Ionized interstellar medium"

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Ferguson, Annette M. N., Rosemary F. G. Wyse, and J. S. Gallagher. "The spectacular ionized interstellar medium of NGC 55." In The seventh astrophysical conference: Star formation, near and far. AIP, 1997. http://dx.doi.org/10.1063/1.52818.

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Rickett, Barney, Vladimir Florinski, Jacob Heerikhuisen, Gary P. Zank, and Dennis L. Gallagher. "Anisotropic and Intermittent Turbulence in the Warm Ionized Interstellar Medium." In PARTIALLY IONIZED PLASMAS THROUGHOUT THE COSMOS-PROCEEDINGS OF THE 2010 HUNTSVILLE WORKSHOP. AIP, 2011. http://dx.doi.org/10.1063/1.3625595.

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Slavin, Jonathan D., Vladimir Florinski, Jacob Heerikhuisen, Gary P. Zank, and Dennis L. Gallagher. "Partially Ionized Gas in the Local Interstellar Medium and Its Galactic Context." In PARTIALLY IONIZED PLASMAS THROUGHOUT THE COSMOS-PROCEEDINGS OF THE 2010 HUNTSVILLE WORKSHOP. AIP, 2011. http://dx.doi.org/10.1063/1.3625593.

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Greenfield, E. J., J. R. Jokipii, Joe Giacalone, et al. "The Physics of Partially Ionized Gas with Applications to Processes in the Interstellar Medium." In PARTIALLY IONIZED PLASMAS THROUGHOUT THE COSMOS-PROCEEDINGS OF THE 2010 HUNTSVILLE WORKSHOP. AIP, 2011. http://dx.doi.org/10.1063/1.3625596.

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Spangler, Steven R., Allison H. Savage, Seth Redfield, et al. "Ion-Neutral Collisions in the Interstellar Medium: Wave Damping and Elimination of Collisionless Processes." In PARTIALLY IONIZED PLASMAS THROUGHOUT THE COSMOS-PROCEEDINGS OF THE 2010 HUNTSVILLE WORKSHOP. AIP, 2011. http://dx.doi.org/10.1063/1.3625594.

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