Results 151 to 160 of about 2,679,570 (255)

MHD Turbulence in interstellar medium and intracluster medium

, 2020
Observations indicate that turbulence in molecular clouds of the interstellar medium (ISM) is highly supersonic (M ???1) and strongly magnetized ( beta = 0.1 ), while in the intracluster medium (ICM) it is subsonic (M <1) and weakly magnetized ( beta =
Cho, Hyunjin, Kang, Hyesung, Ryu, Dongsu
core  

A Deep Redshift Survey of the Perseus Cluster (A426): Spatial Distribution and Kinematics of Galaxies

The Astrophysical Journal Supplement Series
We study the global kinematics of the Perseus galaxy cluster (A426) at redshift z = 0.017 using a large sample of galaxies from our new MMT/Hectospec spectroscopic observation for this cluster.
Wooseok Kang, Ho Seong Hwang, Hyunmi Song, Changbom Park, Narae Hwang, Byeong-Gon Park   +5 more
doaj   +1 more source

Suzaku Observations of the Cold Front in A3667: A Nonequilibrium Ionization State of the Intracluster Medium

The Astrophysical Journal
We present a systematic study of the thermodynamic properties of the intracluster medium (ICM), including the plasma conditions in the ICM, in the merging galaxy cluster A3667 using Suzaku. We analyze the X-ray spectra of the ICM between the northwestern
Mona Shishido, Yuusuke Uchida, Takayoshi Kohmura   +2 more
doaj   +1 more source

On the Origin of the Ancient, Large-scale Cold Front in the Perseus Cluster of Galaxies

The Astrophysical Journal
The intracluster medium of the Perseus Cluster exhibits spiral-shaped X-ray surface brightness discontinuities known as “cold fronts,” which simulations indicate are caused by the sloshing motion of the gas after the passage of a subcluster.
Elena Bellomi, John A. ZuHone, Rainer Weinberger, Stephen A. Walker, Irina Zhuravleva, Mateusz Ruszkowski, Maxim Markevitch   +6 more
doaj   +1 more source

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

The 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, Yuanyuan Su, Andra Stroe, Paul Nulsen, Hyejeon Cho, Kim HyeongHan, M. James Jee, Ralph P. Kraft, Scott Randall, Jimmy A. Irwin, Ryan L. Sanders, Christine Jones   +11 more
doaj   +1 more source

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

The 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, Klaus Dolag, Ludwig M. Böss, Tirso Marin-Gilabert   +3 more
doaj   +1 more source

Iron Abundance in the Intracluster Medium at High Redshift

, 2003
We present the analysis of the X-ray spectra of 18 distant clusters of galaxies with redshift 0.3 1 clusters, we also use deep XMM-Newton observations.
ROSATI, Piero, Mainieri V., Ettori S, Borgani S, Ettori S., Tozzi P, Tozzi P., Rosati P., BORGANI, STEFANO, Mainieri V, Norman C.   +10 more
core   +1 more source

XRISM Constrains Atmospheric Motion and Turbulent Dissipation in the Archetypal Radio-mode Feedback System Hydra-A

The Astrophysical Journal
We present XRISM Resolve observations centered on Hydra-A, a redshift z = 0.054 brightest cluster galaxy, which hosts one of the largest and most powerful FR-I radio sources in the nearby Universe.
Tom Rose, B. R. McNamara, Julian Meunier, A. C. Fabian, Helen Russell, Paul Nulsen, Neo Dizdar, Timothy M. Heckman, Michael McDonald, Maxim Markevitch, Frits Paerels, Aurora Simionescu, Norbert Werner, Alison L. Coil, Edmund Hodges-Kluck, Eric D. Miller, Michael Wise   +16 more
doaj   +1 more source

CHEX-MATE: New detections and properties of the radio diffuse emission in massive clusters with MeerKAT

Astronomy & Astrophysics
Modern radio telescopes are revolutionising our understanding of non-thermal phenomena in galaxy clusters, collecting large samples of extended sources with unprecedented sensitivity and angular resolution.
Balboni M., Gastaldello F., Bonafede A., Botteon A., Bartalucci I., Cassano R., De Grandi S., Ettori S., Gaspari M., Ghizzardi S., Gitti M., Johnston-Hollitt M., Lovisari L., Molendi S., Pointecouteau E., Pratt G. W., Riva G., Rossetti M., Sayers J., Sereno M., van Weeren R. J.   +20 more
doaj   +1 more source

Gravity-selected galaxy clusters: A tight mass-richness relation and an unclear Compton Y-richness trend

Astronomy & Astrophysics
This paper, the third in a series, investigates the scaling relations between optical richness, weak-lensing mass, and Compton Y for a sample of galaxy clusters selected purely by their gravitational effect on the shapes of background galaxies.
Andreon S., Radovich M.
doaj   +1 more source