Filaments and sheets of 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 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 کاملMissing baryons and the warm-hot intergalactic medium.
Stars and gas in galaxies, hot intracluster medium, and intergalactic photo-ionized gas make up at most half of the baryons that are expected to be present in the universe. The majority of baryons are still missing and are expected to be hidden in a web of warm-hot intergalactic medium. This matter was shock-heated during the collapse of density perturbations that led to the formation of the re...
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: Monthly Notices of the Royal Astronomical Society
سال: 2012
ISSN: 0035-8711
DOI: 10.1111/j.1365-2966.2012.20877.x