Results 61 to 70 of about 1,505 (162)

Statistics of Gas Density, Velocity, and Magnetic Fields in Cool-core Galaxy Clusters

The Astrophysical Journal
Understanding turbulence within the intracluster medium of galaxy clusters is pivotal for comprehending their evolution and dynamics. Employing 3D magnetohydrodynamic simulations of galaxy cluster mergers, we examine the statistical properties of gas ...
Yue Hu, Alex Lazarian, Gianfranco Brunetti, John A. ZuHone   +3 more
doaj   +1 more source

Bridging Scales: Modeling Suppressed Bondi Accretion on Black Holes and Its Impact on Galaxy Growth

The Astrophysical Journal
The accretion and feedback processes governing supermassive black hole (SMBH) growth span an enormous range of spatial scales, from the Event Horizon to the circumgalactic medium.
Antonio J. Porras-Valverde, Priyamvada Natarajan, Angelo Ricarte, Kung-Yi Su, Hyerin Cho, Ramesh Narayan, Ben S. Prather   +6 more
doaj   +1 more source

The XMAGNET Exascale MHD Simulations of SMBH Feedback in Galaxy Groups and Clusters: Overview and Preliminary Cluster Results

The Astrophysical Journal
We present initial results from extremely well-resolved 3D magnetohydrodynamical simulations of idealized galaxy clusters, conducted using the AthenaPK code on the Frontier exascale supercomputer.
Philipp Grete, Brian W. O’Shea, Forrest W. Glines, Deovrat Prasad, Benjamin D. Wibking, Martin Fournier, Marcus Brüggen, G. Mark Voit   +7 more
doaj   +1 more source

Revealing the Magnetization of the Intracluster Medium of A3581 Using Background Faraday Rotation Measures from the POSSUM Survey

The Astrophysical Journal
The line-of-sight magnetic field of galaxy clusters can be probed using Faraday rotation measure (RM) data. However, our understanding of cluster magnetism is limited due to the scarcity of polarized background radio sources, with most previous studies ...
Affan Khadir, Erik Osinga, Wonki Lee, David McConnell, B. M. Gaensler, Chiara Stuardi, Craig Anderson, Ettore Carretti, Takuya Akahori, Shane P. O’Sullivan, Lerato Baidoo, Jennifer West, Cameron Van Eck, Lawrence Rudnick, Naomi McClure-Griffiths, Yik Ki Ma, David Alonso-López, Paris Gordon-Hall   +17 more
doaj   +1 more source

Evolution of Magnetic Field of the Quasar 1604+159 at parsec Scale

The Astrophysical Journal
We have analyzed the total intensity, spectral index, linear polarization, and rotation measure (RM) distributions at the parsec scale for the quasar 1604+159.
Xu-Zhi Hu, Xiaoyu Hong, Wei Zhao, Liang Chen, Wei-Yang Wang, Linhui Wu   +5 more
doaj   +1 more source

Magnetic Fields and Halos in Spiral Galaxies [PDF]

Galaxies, 2019
Radio continuum and polarization observations reveal best the magnetic field structure and strength in nearby spiral galaxies. They show a similar magnetic field pattern, which is of spiral shape along the disk plane and X-shaped in the halo, sometimes accompanied by strong vertical fields above and below the central region of the disk. The strength of
openaire   +4 more sources

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

Tracing Magnetic Field in Super-Alfvénic Turbulence with Gradient Technique

The Astrophysical Journal
Super-Alfvénic turbulence is important for many astrophysical objects, particularly galaxy clusters. In this paper, we explore the accuracy of synchrotron intensity gradients and X-ray intensity gradients to map magnetic fields in super-Alfvénic ...
Ka Wai Ho, A. Lazarian
doaj   +1 more source

Magnetic Field of the Quasar 1604+159 from Parsec to Kiloparsec Scale

The Astrophysical Journal
We present a multifrequency polarimetric study for the quasar 1604+159. The source was observed at the L band with the American Very Long Baseline Array and the L , X , and U bands with the Very Large Array.
Xu-Zhi Hu, Xiaoyu Hong, Wei Zhao, Liang Chen, Wei-Yang Wang, Linhui Wu   +5 more
doaj   +1 more source

The Coherent Magnetic Field of the Milky Way

The Astrophysical Journal
We present a suite of models of the coherent magnetic field of the Galaxy based on new divergence-free parametric functions describing the global structure of the field.
Michael Unger, Glennys R. Farrar
doaj   +1 more source