Results 81 to 90 of about 16,927 (234)
MHD turbulence in the intracluster medium [PDF]
Proceedings of the International Astronomical Union, 2012 AbstractIn this work we discuss the turbulent evolution of structures in the intracluster medium based on the two fluid approximations: MHD and collisionless plasma under Chew Goldberger Low (CGL) closure. Turbulence excited by galactic motions and gas inflow in intracluster medium will develop in very different ways considering the two fluid ...
A. Lazarian +5 more
openaire +1 more source
Forecasting Constraints from Surface Brightness Fluctuations in Galaxy Clusters
The Astrophysical JournalStudies of surface brightness (SB) fluctuations in the intracluster medium present an indirect estimate of turbulent pressure support and associated Mach numbers.
Charles E. Romero
doaj +1 more source
Are the HI deficient galaxies on the outskirts of Virgo recent arrivals? [PDF]
, 2002 The presence on the Virgo cluster outskirts of spiral galaxies with gas deficiencies as strong as those of the inner galaxies stripped by the intracluster medium has led us to explore the possibility that some of these peripheral objects are not ...
Alberto Manrique +6 more
core +2 more sources
Sunyaev-Zel'dovich polarization as a probe of the intracluster medium [PDF]
Monthly Notices of the Royal Astronomical Society, 2004 We present high-resolution hydrodynamical simulations of the degree and direction of polarisation imprinted on the CMB by the Sunyaev-Zel'dovich effect in the the line of sight to massive galaxy clusters. We focus on two contributions which contribute most of the induced CMB polarisation in addition to the intrinsic CMB quadrupole: the radiation ...
Joseph Silk +4 more
openaire +4 more sources
Simulating the Arrival of the Southern Substructure in the Galaxy Cluster Abell 1758
The Astrophysical JournalAbell 1758 ( z ∼ 0.278) is a galaxy cluster composed of two structures, A1758N and A1758S, separated by ∼2.2 Mpc. The northern cluster is itself a dissociative merging cluster that has already been modeled by dedicated simulations.
Rubens E. G. Machado +4 more
doaj +1 more source
Quantifying the Unwinding Due to Ram Pressure Stripping in Simulated Galaxies
GalaxiesGalaxies moving through the gas of the intracluster medium (ICM) experience ram pressure stripping, which can leave behind a gas tail. When a disk galaxy receives the wind edge-on, however, the characteristic signature is not a typical jellyfish tail ...
Rubens E. G. Machado +2 more
doaj +1 more source
Investigating the Intracluster Medium Viscosity Using the Tails of GASP Jellyfish Galaxies
The Astrophysical JournalThe microphysics of the intracluster medium (ICM) in galaxy clusters is still poorly understood. Observational evidence suggests that the effective viscosity is suppressed by plasma instabilities that reduce the mean free path of particles. Measuring the
Alessandro Ignesti +15 more
doaj +1 more source
X-ray Observations of the Chemical Abundances in the Intra-Cluster Medium
, 2014 Clusters of galaxies as the largest clearly defined objects in our Universe are ideal laboratories to study the distribution of the most abundant chemical elements heavier than hydrogen and helium and the history of their production.
Böhringer, Hans
core
, 2016 To search for a signature of an intracluster magnetic field, we compare measurements of Faraday rotation of polarised extragalactic radio sources in the line of sight of galaxy clusters with those outside.
Boehringer, Hans +2 more
core +1 more source
XRISM Reveals Low Nonthermal Pressure in the Core of the Hot, Relaxed Galaxy Cluster A2029
The Astrophysical Journal LettersWe present XRISM Resolve observations of the core of the hot, relaxed galaxy cluster Abell 2029 (A2029). We find that the line-of-sight bulk velocity of the intracluster medium (ICM) within the central 180 kpc is at rest with respect to the brightest ...
XRISM Collaboration +138 more
doaj +1 more source