Results 1 to 10 of about 291 (131)
The physics of the intergalactic medium [PDF]
69 pages; accepted version to appear in Reviews of Modern Physics; text and equation typos corrected; all figures ...
exaly +3 more sources
Turbulence in the Intergalactic Medium [PDF]
13 pages, 8 figures.
Evoli, Carmelo, FERRARA, ANDREA
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The Intergalactic Medium [PDF]
The density of intergalactic gas may be an important parameter in the formation of extended radio sources. It may range from ∼ 0.1 particle cm−3 in the centres of some rich clusters of galaxies down to 10−8cm−3 or less in intercluster space. The possible influence of the intracluster gas surrounding NGC 1275 on its radio emission is discussed, and the ...
A. C. Fabian, A. K. Kembhavi
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Metals in the intergalactic medium [PDF]
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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The Low-redshift Intergalactic Medium [PDF]
AbstractThe low-redshift Lyα forest of absorption lines provides a probe of large-scale baryonic structures in the intergalactic medium, some of which may be remnants of physical conditions set up during the epoch of galaxy formation. We discuss our recent Hubble Space Telescope (HST) observations and interpretation of low-z Lyα clouds toward nearby ...
Shull, J. Michael +2 more
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A hot intergalactic medium? [PDF]
On a de nouveau examine l'hypothese d'un milieu intergalactique chaud produisant le fond RX 5-200 keV, en tenant compte des corrections relativistes pour l'emissivite du gaz, la thermodynamique et la diffusion ...
P. W. Guilbert, A. C. Fabian
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Dipole distortions in the intergalactic medium [PDF]
Abstract Baryonic feedback can significantly modify the spatial distribution of matter on small scales and create a bulk relative velocity between the dominant cold dark matter and the hot gas. We study the consequences of such bulk motions using two high-resolution hydrodynamic simulations, one with no feedback and one with very strong ...
Francisco Villaescusa-Navarro +2 more
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Simulating intergalactic medium reionization [PDF]
We have studied the intergalactic medium (IGM) reionization process in its full cosmological context, including structure evolution and a realistic galaxy population. We have used a combination of high-resolution N-body simulations (to describe the dark matter and diffuse gas component), a semi-analytical model of galaxy formation (to track the ...
Ciardi, B., Stoehr, F., White, S. D. M.
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The Intergalactic Medium [PDF]
Observations of Lyman-α absorption show that any gas present in the space between clusters of galaxies must be hot, and x-ray observations indicate that there may be present gas whose temperature at low redshifts is 4 × 108 K and whose density is about half the critical value for cosmology.
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Radiative transfer through the intergalactic medium [PDF]
5 pages, 7 figures, letter accepted for publication in ...
Bolton, James +2 more
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