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Diffuse radio emission has been detected in a considerable number of galaxy clusters and groups, revealing the presence of pervasive cosmic magnetic fields, and of relativistic particles in the large-scale structure (LSS) of the Universe.…

This work presents the magnetic field geometry in a complex of three cometary (with head-tail morphology) globules, namely LDN 323, LDN 328, and LDN 331, using R-band polarization measurements of background stars. These observations were…

Astrophysics of Galaxies · Physics 2023-08-02 Siddharth Kumar , Archana Soam , Nirupam Roy

We study numerically large-scale magnetic field evolution and its enhancement in gaseous disks of spiral galaxies. We consider a set of models with the various spiral pattern parameters and the initial magnetic field strength with taking…

Astrophysics of Galaxies · Physics 2018-01-31 S. A. Khoperskov , S. S. Khrapov

We present a detailed examination of the relationship between the magnetic field structures and the variations in Faraday Rotation across PKS1246-410, a radio source in the Centaurus cluster of galaxies, using data from Taylor, Fabian and…

Astrophysics · Physics 2009-11-07 L. Rudnick , K. Blundell

[Abridged] Galaxy clusters are the most massive gravitationally-bound systems in the universe and are widely considered to be an effective cosmological probe. We propose the first Machine Learning method using galaxy cluster properties to…

We present self-consistent cosmological magnetohydrodynamic (MHD) simulations that simultaneously follow the formation of a galaxy cluster and the magnetic field ejection by an active galactic nucleus (AGN). We find that the magnetic fields…

Cosmology and Nongalactic Astrophysics · Physics 2010-05-27 Hao Xu , Hui Li , David C. Collins , Shengtai Li , Michael L. Norman

After a short introduction on how we get information of the magnetic fields from radio observations I discuss the results concerning the magnetic field structure in galaxies: Large-scale regular magnetic field pattern of spiral structure…

Astrophysics · Physics 2007-05-23 M. Krause

Axion-like particles (ALPs) are a well-motivated extension to the standard model of particle physics, and X-ray observations of cluster-hosted AGN currently place the most stringent constraints on the ALP coupling to electromagnetism, $g_{a…

High Energy Astrophysical Phenomena · Physics 2022-05-18 James H. Matthews , Christopher S. Reynolds , M. C. David Marsh , Júlia Sisk-Reynés , Payton E. Rodman

We study the properties of magnetic fields in the circumgalactic medium (CGM) of $z<1$ galaxies by correlating Faraday rotation measures of $\sim 1,000$ high-redshift radio sources with the foreground galaxy number density estimated from…

Astrophysics of Galaxies · Physics 2020-06-24 Ting-Wen Lan , J. Xavier Prochaska

Multiscale studies of the morphology and strength of the magnetic field are crucial to properly unveil its role and relative importance in high-mass star and cluster formation. G31.41+0.31 (G31) is a hub-filament system that hosts a…

The objective of this paper is to help shedding some light on the nature and the properties of the cold structures formed via thermal instability in the magnetized atomic interstellar medium. To this end, we searched for clumps formed in…

Astrophysics of Galaxies · Physics 2020-12-23 Adriana Gazol , Marco Villagran

Future X-ray observations of galaxy clusters by high spectral resolution missions will provide spatially resolved measurements of the energy and width for the brightest emission lines in the intracluster medium (ICM) spectrum. In this paper…

High Energy Astrophysical Phenomena · Physics 2015-06-04 I. Zhuravleva , E. Churazov , A. Kravtsov , R. Sunyaev

We present Very Long Baseline Array (VLBA) observations of the nucleus of NGC 1275, the central, dominant galaxy in the Perseus cluster of galaxies. These are the first observations to resolve the linearly polarized emission from 3C84, and…

Astrophysics · Physics 2009-09-17 G. B. Taylor , N. E. Gugliucci , A. C. Fabian , J. S. Sanders , G. Gentile , S. W. Allen

Deep R-band CCD linear polarimetry collected for fields with lines-of-sight toward the Lupus I molecular cloud is used to investigate the properties of the magnetic field within this molecular cloud. The observed sample contains about 7000…

Solar and Stellar Astrophysics · Physics 2015-05-01 G. A. P. Franco , F. O. Alves

Diffuse filaments connect galaxy clusters to form the cosmic web. Detecting these filaments could yield information on the magnetic field strength, cosmic ray population and temperature of intercluster gas, yet, the faint and large-scale…

Cosmology and Nongalactic Astrophysics · Physics 2021-06-10 Tessa Vernstrom , George Heald , Franco Vazza , Tim Galvin , Jennifer West , Nicola Locatelli , Nicolao Fornengo , Elena Pinetti

Molecular clouds are sites of star formation. Magnetic fields are believed to play an important role in their dynamics and shaping morphology. We aim to study any possible correlation that might exist between the magnetic fields orientation…

Astrophysics of Galaxies · Physics 2022-10-26 Ekta Sharma , Maheswar Gopinathan , Archana Soam , Chang Won Lee , T. R. Seshadri

The properties of stars and planets are shaped by the initial conditions of their natal clouds. However, the spatial scales over which the initial conditions can exert a significant influence are not well constrained. We report the first…

Solar and Stellar Astrophysics · Physics 2025-10-31 Caeley V. Pittman , Catherine C. Espaillat , Thanawuth Thanathibodee , Nuria Calvet , Lee W. Hartmann , Sylvie Cabrit

Magnetic fields and turbulence are fundamental to the evolution of galaxies, yet their precise measurement and analysis present significant challenges. The recently developed Velocity Gradient Technique (VGT), which capitalizes on the…

Astrophysics of Galaxies · Physics 2025-03-07 Yue Hu , Joseph Whittingham , A. Lazarian , Christoph Pfrommer , Siyao Xu , Thomas Berlok

In this work we study the contribution of magnetic fields to the Sunyaev Zeldovich (SZ) effect in the intracluster medium. In particular we calculate the SZ angular power spectrum and the central temperature decrement. The effect of…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-18 Rajesh Gopal , Suparna Roychowdhury

Context: Angular momentum (AM) transport models of stellar interiors require improvements to explain the strong extraction of AM from stellar cores that is observed with asteroseismology. One of the often invoked mediators of AM transport…

Solar and Stellar Astrophysics · Physics 2020-07-01 Jordan Van Beeck , Vincent Prat , Timothy Van Reeth , Stéphane Mathis , Dominic M. Bowman , Coralie Neiner , Conny Aerts