The warm-hot intergalactic medium
نویسندگان
چکیده
منابع مشابه
Baryons in the Warm-hot Intergalactic Medium
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...
متن کاملTracing the Warm Hot Intergalactic Medium in the Local Universe
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...
متن کاملThe Temperature Structure of the Warm-hot Intergalactic Medium
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...
متن کاملConstraining the thermal history of the Warm – Hot Intergalactic Medium
We have identified a large-scale structure traced by galaxies at z=0.8, within the Lockman Hole, by means of multi-object spectroscopic observations. By using deep XMM images we have investigated the soft X-ray emission from the Warm-Hot Intergalactic Medium (WHIM) expected to be associated with this large-scale structure and we set a tight upper limit to its flux in the very soft 0.2–0.4 keV b...
متن کاملObservations of the Warm - Hot Intergalactic Medium towards PG
We use Far Ultraviolet Spectroscopic Explorer (FUSE) and Space Telescope Imaging Spectrograph (STIS) spectra to study intergalactic absorption towards the quasar PG1259+593 (zem = 0.478), with a particular emphasis on the warm-hot intergalactic medium (WHIM). The combined FUSE and STIS spectrum of PG1259+593 covers the full wavelength range between 905 and 1730 Å at a spectral resolution of∼ 25...
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ژورنال
عنوان ژورنال: Proceedings of the International Astronomical Union
سال: 2004
ISSN: 1743-9213,1743-9221
DOI: 10.1017/s1743921304000237