Equilibration Processes in the Warm-Hot Intergalactic Medium
نویسندگان
چکیده
منابع مشابه
Equilibration processes in the Warm - Hot Intergalactic Medium
The Warm-Hot Intergalactic Medium (WHIM) is thought to contribute about 40 − 50 % to the baryonic budget at the present evolution stage of the universe. The observed large scale structure is likely to be due to gravitational growth of density fluctuations in the post-inflation era. The evolving cosmic web is governed by non-linear gravitational growth of the initially weak density fluctuations ...
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Approximately 30− 40% of all baryons in the present day universe reside in a warm-hot intergalactic medium (WHIM), with temperatures between 10 < T < 10 K. This is a generic prediction from six hydrodynamic simulations of currently favored structure formation models having a wide variety of numerical methods, input physics, volumes, and spatial resolutions. Most of these warm-hot baryons reside...
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We present a simple method for tracing the spatial distribution and predicting the physical properties of the Warm-Hot Intergalactic Medium (WHIM), from the map of galaxy light in the local universe. Under the assumption that biasing is local and monotonic we map the ∼ 2 hMpc smoothed density field of galaxy light into the mass density field from which we infer the spatial distribution of the W...
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This review briefly discusses the use of UV absorption lines in the spectra of low-redshift QSOs for the study of the physical conditions, metallicity, and baryonic content of the low−z IGM, with emphasis on implications for the missing baryons problem. Current results on the statistics and baryonic content of intervening, low−z O VI and Lyα absorption-line systems are presented with some comme...
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We study the temperature structure of the intergalactic medium (IGM) using a large cosmological N -body/SPH simulation. We employ a two-temperature model for the thermal evolution of the ionized gas, in which the relaxation process between electrons and ions is explicitly included. In the diffuse, hot IGM, the relaxation time is comparable to the age of the Universe and hence the electron tempe...
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ژورنال
عنوان ژورنال: Space Science Reviews
سال: 2008
ISSN: 0038-6308,1572-9672
DOI: 10.1007/s11214-008-9309-4