Results 11 to 20 of about 16,803 (214)

A Multiphase Model for the Intracluster Medium [PDF]

Monthly Notices of the Royal Astronomical Society, 1999
Constraints on the clustered mass density \Omega_m of the universe derived from the mean intracluster gas fraction of X-ray clusters may be biased by a single-phase assumption for the thermodynamic structure of the intracluster medium (ICM). We propose a
A. E. Evrard, Birkinshaw M., Cavaliere A., Cen R., Cole S., D. Nagai, David L. P., Eke V. R., Fabian A. C., Frenk C. S., Gunn K. F., Hamuy M., Inagaki Y., Irwin J. A., Irwin J. A., Jones M., M. E. Sulkanen, Mohr J. J., Navarro J. F., Neumann D. M., Nulsen P. E. J., Peres C. B., Raymond J. C., Riess A. G., Thomas P., Thomas P. A., White D. A., White S. D. M., Zaroubi S.   +28 more
core   +6 more sources

A Two-Temperature Model of the Intracluster Medium [PDF]

The Astrophysical Journal, 1998
We investigate evolution of the intracluster medium (ICM), considering the relaxation process between the ions and electrons. According to the standard scenario of structure formation, ICM is heated by the shock in the accretion flow to the gravitational
Binney J., Cavaliere A., Fujita Y., Henon M., Inagaki Y., Ishizaka C., Motokazu Takizawa, Navarro J. F., Schindler S., Schindler S., Shafranov V. D., Sunyaev R. A., van de Weygaert R., Yoshikawa K., Zeldovich Ya. B.   +14 more
core   +5 more sources

Enrichment of the hot intracluster medium: observations [PDF]

Space Science Reviews, 2018
Four decades ago, the firm detection of an Fe-K emission feature in the X-ray spectrum of the Perseus cluster revealed the presence of iron in its hot intracluster medium (ICM).
Biffi, V., de Plaa, J., Ettori, S., Gu, L., Kaastra, J. S., Medvedev, P., Mernier, F., Simionescu, A., Werner, N., Yamaguchi, H.   +9 more
core   +7 more sources

The Sunyaev-Zel'dovich temperature of the intracluster medium [PDF]

Monthly Notices of the Royal Astronomical Society, 2008
The relativistic Sunyaev-Zel'dovich (SZ) effect offers a method, independent of X-ray, for measuring the temperature of the intracluster medium (ICM) in the hottest systems. Here, using N-body/hydrodynamic simulations of three galaxy clusters, we compare
Andrew R. Liddle, Leila C. Powell, Peter A. Thomas, Pointecouteau E., Scott T. Kay, Sunyaev R. A.   +5 more
core   +8 more sources

Chemical and Thermal History of the Intracluster Medium [PDF]

Symposium - International Astronomical Union, 2004
Clusters of galaxies can be seen as giant astrophysical laboratories enclosing matter in a large enough volume, so that the matter composition can be taken as representing the composition of our Universe.
Boehringer, Hans
core   +3 more sources

Missing Thermal Energy of the Intracluster Medium [PDF]

Monthly Notices of the Royal Astronomical Society, 2007
The Sunyaev-Zel'dovich (SZ) effect is a direct probe of thermal energy content of the Universe, induced in the cosmic microwave background (CMB) sky through scattering of CMB photons off hot electrons in the intracluster medium (ICM). We report a 9-sigma
Afshordi, Niayesh, Lin, Yen-Ting, Nagai, Daisuke, Sanderson, Alastair J. R.   +3 more
core   +4 more sources

Turbulence and Mixing in the Intracluster Medium [PDF]

AIP Conference Proceedings, 2009
The intracluster medium (ICM) is stably stratified in the hydrodynamic sense with the entropy $s$ increasing outwards. However, thermal conduction along magnetic field lines fundamentally changes the stability of the ICM, leading to the "heat-flux ...
Chandran, B. D. G., Parrish, I. J., Quataert, E., Sharma, P.   +3 more
core   +2 more sources

Intracluster medium of the merging cluster Abell 3395 [PDF]

The Astrophysical Journal, 2011
We present a detailed imaging and spectral analysis of the merging environment of the bimodal cluster A3395 using X-ray and radio observations. X-ray images of the cluster show five main constituents of diffuse emission : A3395 NE, A3395 SW, A3395 NW ...
Angrick, Blanton, Burgess, Burns, D. J. Saikia, Donnelly, Douglass, Finoguenov, Girardi, Gitti, Gregorini, Gu, Gutierrez, Gómez, Henry, Jaffe, Jones, Jones, K. P. Singh, Kauffmann, Kiran Lakhchaura, Large, Markevitch, Mitchell, Moffet, Murgia, Nakamura, Owers, R. W. Hunstead, Randall, Reid, Roettiger, Sarazin, Sault, Smith, Snowden, Tittley, Wall, Weratschnig, Wright, Xue   +40 more
core   +2 more sources

The Enrichment of the Intracluster Medium [PDF]

Symposium - International Astronomical Union, 1996
Recent observational evidence for steep dwarf galaxy luminosity functions in several rich clusters has led to speculation that their precursors, via supernovae (SNe)-driven galactic winds, may be the source of the majority of gas and metals inferred from intracluster medium (ICM) x-ray observations (Trentham 1994).
B. K. Gibson, F. Matteucci
openaire   +4 more sources

THE ENRICHMENT OF THE INTRACLUSTER MEDIUM [PDF]

The Astrophysical Journal, 2009
To determine the relative contributions of galactic and intracluster stars to the enrichment of the intracluster medium (ICM), we present X-ray surface brightness, temperature, and Fe abundance profiles for a set of twelve galaxy clusters for which we have extensive optical photometry.
Sivanandam, Suresh, Zabludoff, Ann I., Zaritsky, Dennis, Gonzalez, Anthony H., Kelson, Dan D.   +4 more
openaire   +2 more sources