Results 11 to 20 of about 1,993,973 (222)
Proceedings of the International Astronomical Union, 2005 The absorption lines seen in the spectra of high redshift QSOs are important tools for studying the early evolution of galaxies and intergalactic medium. In this presentation I briefly review various available observations, our understanding of different
Srianand, Raghunathan
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The physics of the intergalactic medium [PDF]
Reviews of Modern Physics, 2009 69 pages; accepted version to appear in Reviews of Modern Physics; text and equation typos corrected; all figures ...
Avery A. Meiksin
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, 2013 This chapter examines the intergalactic medium (IGM). Although much of astronomy focuses on the luminous material inside galaxies, the majority of matter today—and the vast majority at z > 6—actually lies outside these structures, in the IGM. This material ultimately provides the fuel for galaxy and cluster formation and—because it is much less ...
Abraham Loeb, Steven R. Furlanetto
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Compton Scattering of Electrons in the Intergalactic Medium
The Astrophysical JournalThis paper investigates the distribution and implications of cosmic-ray electrons within the intergalactic medium (IGM). Utilizing a synthesis model of the extragalactic background, we evolve the spectrum of Compton-included cosmic rays.
Yuanyuan Yang +2 more
doaj +3 more sources
Turbulence in the Intergalactic Medium [PDF]
Monthly Notices of the Royal Astronomical Society, 2011 We study supernova-driven galactic outflows as a mechanism for injecting turbulence in the intergalactic medium (IGM) far from galaxies. To this aim we follow the evolution of a 10^13 Msun galaxy along its merger tree, with carefully calibrated prescriptions for star formation and wind efficiencies.
Evoli, Carmelo, FERRARA, ANDREA
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Metals in the intergalactic medium [PDF]
Astronomy & Astrophysics, 2004 We use high spectral resolution (R=45000) and high signal-to-noise ratio (S/N \~ 35-70 per pixel) spectra of 19 high-redshift (2.11. Our observations strongly suggest that the CIV/HI ratio decreases with decreasing tau(HI) with log[tau(CIV)]=1.3xlog[tau(HI)]-3.2. We do not detect CIV absorption statistically associated with gas of tau(HI)<1. However,
Aracil, Bastien +3 more
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Power and the Aerial Sublime in Victor Pelevin
The Russian Review, Volume 82, Issue 4, Page 582-598, October 2023., 2023 Abstract This essay distinguishes flight as a salient trope throughout multiple Pelevin texts: Omon Ra (1992), Chapaev and the Void (1996), Generation P (1999), Empire V (2006), and Love for Three Zuckerbrins (2014). It examines flight through the aesthetics of the sublime—classical, (post)‐Soviet, and postmodern.
Sofya Khagi
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Revisiting the emission line source detection problem in integral field spectroscopic data
Astronomische Nachrichten, Volume 344, Issue 5, June 2023., 2023 Abstract We present a 3‐dimensional matched filtering approach for the blind search of faint emission‐line sources in integral‐field spectroscopic datasets. The filter is designed to account for the spectrally rapidly varying background noise due to the telluric air glow spectrum.
Edmund Christian Herenz
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Effect of the metallicity of the intergalactic medium in the Lyman‐α forest correlation function
Astronomische Nachrichten, Volume 344, Issue 1-2, January-February 2023., 2023 Abstract The Lyman‐α (Lyα) forest allows to constraint cosmological parameters at redshifts above 1.8$$ 1.8 $$ using the technique of standard rulers determined by baryon acoustic oscillations. This makes it an important tracer for the study of the universe at high redshift.
Andrea Muñoz‐Gutiérrez +1 more
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Relationship of Retinal Vessel Caliber with Age‐Related Macular Degeneration
Journal of Ophthalmology, Volume 2022, Issue 1, 2022., 2022 Purpose. Evaluate the relationship between retinal vascular caliber and age‐related macular degeneration (AMD) severity or progression. Methods. A retrospective secondary analysis of 1172 fundus photographs and clinical data from the prospective Age‐Related Eye Disease Study (AREDS).
Sara Toulouie +5 more
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