Results 111 to 120 of about 2,712 (226)

A Yin-yang Galaxy Cluster Merger in A1914 Revealed by XRISM

open access: yesThe Astrophysical Journal Letters
Hierarchical mergers of galaxy clusters play a key role in converting gravitational energy into thermal and kinetic energy in the local Universe.
Annie Heinrich   +6 more
doaj   +1 more source

THE X-RAY SPECTRUM OF THE COOLING-FLOW QUASAR H1821+643: A MASSIVE BLACK HOLE FEEDING OFF THE INTRACLUSTER MEDIUM [PDF]

open access: bronze, 2014
C. S. Reynolds   +6 more
openalex   +1 more source

Chemical Composition of the Intracluster Medium

open access: yes, 2003
Clusters of galaxies are massive enough to be considered representative samples of the Universe, and to retain all of the heavy elements synthesized in their constituent stars. Since most of these metals reside in hot plasma, X-ray spectroscopy of clusters provides a unique and fundamental tool for studying chemical evolution.
openaire   +2 more sources

Toward Cosmological Simulations of the Magnetized Intracluster Medium with Resolved Coulomb Collision Scale

open access: yesThe Astrophysical Journal
We present the first results of one extremely high-resolution, nonradiative magnetohydrodynamical cosmological zoom-in simulation of a massive cluster with a virial mass of  M _vir = 2.0 × 10 ^15 solar masses. We adopt a mass resolution of 4 × 10 ^5 M _⊙
Ulrich P. Steinwandel   +3 more
doaj   +1 more source

SDSS-C4 3028: the Nearest Blue Galaxy Cluster Devoid of an Intracluster Medium

open access: yesThe Open Journal of Astrophysics
SDSS-C4 3028 is a galaxy cluster at $z=0.061$, notable for its unusually high fraction of star-forming galaxies with 19 star-forming and 11 quiescent spectroscopically-confirmed member galaxies. From Subaru/HSC imaging, we derived a weak lensing mass of $
Shweta Jain   +11 more
doaj   +1 more source

Effective Viscosity in the Intracluster Medium During Magnetic Field Amplification via Turbulent Dynamo

open access: yesThe Astrophysical Journal
Galaxy clusters, the largest gravitationally bound structures, host a hot, diffuse plasma with poorly understood viscosity and magnetic field amplification.
S. Adduci Faria   +2 more
doaj   +1 more source

A Rare, Strong Shock Front in the Merging Cluster SPT-CLJ 2031-4037

open access: yesThe Astrophysical Journal
We present our findings from the new deep Chandra observations (256 ks) of the merging galaxy cluster SPT-CLJ 2031-4037 at z = 0.34. Our observations reveal intricate structures seen in a major merger akin to the Bullet Cluster.
Purva Diwanji   +2 more
doaj   +1 more source

Magnetic fields in the intracluster medium with TNG-Cluster: Properties, morphology, and tangential anisotropy

open access: yesAstronomy & Astrophysics
We characterized the magnetic field properties of 352 massive galaxy clusters from the TNG-Cluster magnetohydrodynamical (MHD) cosmological simulation with a focus on central magnetic field morphology in cool-core (CC) versus non-cool-core (NCC) clusters.
Lehle Katrin   +4 more
doaj   +1 more source

The NuSTAR View of Perseus: The Intracluster Medium and a Peculiar Hard Excess

open access: yesThe Astrophysical Journal
As the brightest galaxy cluster in the X-ray sky, Perseus is an excellent target for studying the intracluster medium (ICM), but until recently, its active galactic nucleus (AGN) made studies of the diffuse emission near its center nearly impossible to ...
Samantha Creech   +5 more
doaj   +1 more source

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