Results 41 to 50 of about 69,040 (190)
Simulating the transport of relativistic electrons and magnetic fields injected by radio galaxies in the intracluster medium [PDF]
, 2021 Radio galaxies play an important role in the seeding of cosmic rays and magnetic fields in galaxy clusters. Here, we simulate the evolution of relativistic electrons injected into the intracluster medium by radio galaxies. Using passive tracer particles added to magnetohydrodynamical adaptive-mesh simulations, we calculate the evolution of the spectrum
arxiv +1 more source
Signatures of Galaxy Formation in the Intracluster Medium [PDF]
The Astrophysical Journal, 2003 The intergalactic gas in groups and clusters of galaxies bears the indelible stamp of galaxy formation. We present a comparison between observations and simple theoretical models indicating that radiative cooling governs the entropy scale that sets the core radius of the intracluster medium.
G. Mark Voit +2 more
openaire +4 more sources
Intracluster Medium through three years of WMAP [PDF]
, 2006 Wilkinson Microwave Anisotropy Probe (WMAP) has provided us with the yet highest resolution all-sky maps of the Cosmic Microwave Background. As a result of thermal Sunyaev-Zel'dovich effect, clusters of galaxies are imprinted as tiny, poorly resolved ...
Afshordi +22 more
core +3 more sources
Enrichment of the Intracluster Medium [PDF]
, 1999 The relevance of galaxies of different luminosity and mass for the chemical enrichment of the intracluster medium (ICM) is analysed. For this purpose, I adopt the composite luminosity function of cluster galaxies from Trentham (1998), which exhibits a significant rise at the very faint end.
openaire +3 more sources
Stability analysis of convection in the intracluster medium [PDF]
Physics Letters A, 2016 We use the machinery usually employed for studying the onset of Rayleigh--B nard convection in hydro- and magnetohydro-dynamic settings to address the onset of convection induced by the magnetothermal instability and the heat-flux-buoyancy-driven-instability in the weakly-collisional magnetized plasma permeating the intracluster medium.
Gupta, H. +3 more
openaire +3 more sources
AN ATTRACTOR FOR THE DYNAMICAL STATE OF THE INTRACLUSTER MEDIUM [PDF]
The Astrophysical Journal, 2012 Galaxy clusters provide us with important information about the cosmology of our universe. Observations of the X-ray radiation or of the SZ effect allow us to measure the density and temperature of the hot intergalactic medium between the galaxies in a cluster, which then allow us to calculate the total mass of the galaxy cluster.
Juncher, Diana +2 more
openaire +4 more sources
The X-Ray Intracluster Medium [PDF]
Symposium - International Astronomical Union, 1996 Clusters of galaxies are the largest aggregates of matter that have decoupled from the universal expansion and have approximately evolved to a proper dynamical equilibrium configuration. While in the optical they are just observed as dense concentrations of galaxies, they are seen in X-rays as continuously connected entities through the emission of the
openaire +2 more sources
ASCA Measurements of Silicon and Iron Abundances in the Intracluster Medium [PDF]
, 1998 We analyzed the ASCA X-ray data of 40 nearby clusters of galaxies, whose intracluster-medium temperature distributes in the range of 0.9--10 keV. We measured the Si and Fe abundances of the intracluster medium, spatially averaging over each cluster, but excluding the central $\sim 0.15 h_{50}^{-1}$ Mpc region in order to avoid any possible abundance ...
arxiv +1 more source
Nonthermal support for the outer intracluster medium [PDF]
Astronomy & Astrophysics, 2010 We submit that non thermalized support for the outer intracluster medium in relaxed galaxy clusters is provided by turbulence, driven by inflows of intergalactic gas across the virial accretion shocks. We expect this component to increase briskly during the cluster development for z<1/2, due to three factors.
Cavaliere, A. +2 more
openaire +5 more sources
Heating of the intracluster medium
The Astrophysical Journal, 1990 The gravitational interaction of the system of galaxies and the ICM are treated by fluctuation theory. Fluctuation theory seems to be more adequate to describe the gravitational interaction than local theories used up to now, because gravitation is a long-range force.
G. E. Morfill +4 more
openaire +2 more sources