Results 41 to 50 of about 32,240 (255)

Dipole distortions in the intergalactic medium [PDF]

Monthly Notices of the Royal Astronomical Society, 2019
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, Ue-Li Pen, Derek Inman   +2 more
openaire   +2 more sources

Heating of the intergalactic medium due to structure formation [PDF]

, 2001
We estimate the heating of the intergalactic medium due to shocks arising from structure formation. Heating of the gas outside the collapsed regions, with small overdensities (${n_b \over {\bar n_b}}\ll 200$) is considered here, with the aid of Zel ...
Bardeen, Biman B. Nath, Cen, Jones, Joseph Silk, Peacock, Pen, Sunyaev, Zel'Dovich   +8 more
core   +3 more sources

Simulating intergalactic medium reionization [PDF]

Monthly Notices of the Royal Astronomical Society, 2003
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.
openaire   +3 more sources

Metal Enrichment of the Intergalactic Medium in Cosmological Simulations [PDF]

, 2001
Observations have established that the diffuse intergalactic medium (IGM) at z ~ 3 is enriched to ~0.1-1% solar metallicity and that the hot gas in large clusters of galaxies (ICM) is enriched to 1/3-1/2 solar metallicity at z=0.
Anthony Aguirre, Breitschwerdt D., Breitschwerdt D., Chiao R. Y., David H. Weinberg, Duley W. W., Ferrara A., Fukumoto J., Gavazzi G., Jeffrey Gardner, Joop Schaye, Lars Hernquist, Nath B. B., Neal Katz, Scalo J. M., Shustov B. M., Simonsen J. T., Zucca E.   +17 more
core   +3 more sources

Numerical simulations of the Warm-Hot Intergalactic Medium [PDF]

, 2008
In this paper we review the current predictions of numerical simulations for the origin and observability of the warm hot intergalactic medium (WHIM), the diffuse gas that contains up to 50 per cent of the baryons at z~0.
A. Finoguenov, A.M. Bykov, A.V. Kravtsov, B.B. Nath, C. Hernandez-Monteagudo, C.E. Rakowski, D.H. Weinberg, D.N. Spergel, E. Ursino, E.J. Hallman, F. Durret, F. Hoyle, F. Miniati, F.B.S. Paerels, F.K. Hansen, G. Hasinger, G.L. Bryan, G.M. Voit, G.M. Voit, H. Kang, H. Kawahara, J. Bagchi, J. Schaye, J.N. Bregman, J.P.D. Mittaz, Joop Schaye, K. Dolag, K. Dolag, K. Dolag, K. Yoshikawa, K. Yoshikawa, K. Yoshikawa, K.-T. Kim, K.A. Olive, K.K.S. Wu, Klaus Dolag, L. Cao, L.-M. Cheng, L.A. Phillips, M. Bonamente, M. Brüggen, M. Fukugita, M. Fukugita, M. Persic, M. Pierre, M. Rauch, M. Roncarelli, M. Viel, M. Viel, M.A. Worsley, N. Yoshida, P. Richter, P. Richter, P. Richter, P. Valageas, P.P. Kronberg, P.P. Kronberg, R. Cen, R. Cen, R. Cen, R. Cen, R. Davé, R. Davé, R. Lieu, R. Perna, R. Sunyaev, R. Teyssier, R.A.C. Croft, R.A.C. Croft, S. Bertone, S.K. Chakrabarti, S.R. Furlanetto, S.R. Furlanetto, S.R. Furlanetto, Serena Bertone, T. Fang, T. Fang, T. Fang, T. Miyaji, T.A. Enßlin, U. Hellsten, U.L. Pen, X. Barcons, X. Chen, Y. Rasera   +84 more
core   +2 more sources

The Intergalactic Medium [PDF]

Highlights of Astronomy, 1980
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.
openaire   +1 more source

PECULIARITIES OF MIXING METALS IN INTERGALACTIC AND INTERSTELLAR MEDIA

Odessa Astronomical Publications, 2008
We review the current status of the problem of metal mixing in the intergalactic and interstellar media. We give simple arguments for inefficiency of mixing metals because of a saturation of hydrodynamic (Rayleigh-Taylor and Kelvin-Helmholz ...
S. Yu. Dedikov, Yu. A. Shchekinov, E. O. Vasiliev   +2 more
doaj   +1 more source

X-Ray Emission from the Warm Hot Intergalactic Medium [PDF]

, 2006
The number of detected baryons in the Universe at ...
Barber C. R., E. Ursino, Galeazzi M., M. Galeazzi, Rasmussen A., Soltan A. M., Yoshikawa K., Yoshikawa K.   +7 more
core   +1 more source

Baryons in the Warm‐Hot Intergalactic Medium [PDF]

The Astrophysical Journal, 2001
This is the pre-published version harvested from ArXiv. The published version is located at http://iopscience.iop.org/0004-637X/552/2/473/
Dave, R, Cen, R, Ostriker, JP, Bryan, GL, Hernquist, L, Katz, N, Weinberg, DH, Norman, ML, O'Shea, B   +8 more
openaire   +3 more sources

Scattered Lyman-alpha Radiation Around Sources Before Cosmological Reionization

, 1999
The spectra of the first galaxies and quasars in the Universe should be strongly absorbed shortward of their rest-frame Lyman-alpha wavelength by neutral hydrogen (HI) in the intervening intergalactic medium. However, the Lyman-alpha line photons emitted
Abraham Loeb, Edwards D., George B. Rybicki, Harrington J. P., Hummer D. G., Shaver P. A.   +5 more
core   +1 more source