Results 71 to 80 of about 298 (165)

Conversion of TeV photons in realistic extragalactic magnetic field

, 2018
Very High Energy (TeV) photons can evade absorption by conversion into axion-like (ALPs) particles in the extragalactic magnetic field (EMF). We show that using realistic simulations of the EMF we obtain an even stronger conversion than those obtained with the simplified cell model.
Montanino, D., Vazza, F., Mirizzi, A., Viel, M.   +3 more
openaire   +2 more sources

The Fallibility of Equipartition Magnetic Field Strengths from Synchrotron Emission Using Synthetically Observed Galaxies

The Astrophysical Journal
Understanding the role that magnetic fields play on the stage of galaxy formation requires accurate methods for inferring the properties of extragalactic magnetic fields.
Tara Dacunha, Sergio Martin-Alvarez, Susan E. Clark, Enrique Lopez-Rodriguez   +3 more
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

Polarized thermal emission from dust in a galaxy at redshift 2.6. [PDF]

Nature, 2023
Geach JE, Lopez-Rodriguez E, Doherty MJ, Chen J, Ivison RJ, Bendo GJ, Dye S, Coppin KEK.   +7 more
europepmc   +1 more source

Intergalactic Medium Rotation Measure of Primordial Magnetic Fields

The Astrophysical Journal
The Faraday rotation effect, quantified by the rotation measure (RM), is a powerful probe of the large-scale magnetization of the Universe—tracing magnetic fields not only on galaxy and galaxy cluster scales but also in the intergalactic medium (IGM ...
Salome Mtchedlidze, Paola Domínguez-Fernández, Xiaolong Du, Ettore Carretti, Franco Vazza, Shane Patrick O’Sullivan, Axel Brandenburg, Tina Kahniashvili   +7 more
doaj   +1 more source

Extragalactic Magnetism with SOFIA (SALSA Legacy Program). VII. A Tomographic View of Far-infrared and Radio Polarimetric Observations through MHD Simulations of Galaxies

The Astrophysical Journal
The structure of magnetic fields in galaxies remains poorly constrained, despite the importance of magnetism in the evolution of galaxies. Radio synchrotron and far-infrared (FIR) polarization and polarimetric observations are the best methods to measure
Sergio Martin-Alvarez, Enrique Lopez-Rodriguez, Tara Dacunha, Susan E. Clark, Alejandro S. Borlaff, Rainer Beck, Francisco Rodríguez Montero, Seoyoung L. Jung, Julien Devriendt, Adrianne Slyz, Julia Christine Roman-Duval, Evangelia Ntormousi, Mehrnoosh Tahani, Kandaswamy Subramanian, Daniel A. Dale, Pamela M. Marcum, Konstantinos Tassis, Ignacio del Moral-Castro, Le Ngoc Tram, Matt J. Jarvis   +19 more
doaj   +1 more source

CHANG-ES. XXXV. Cosmic Ray Transport and Magnetic Field Structure of NGC 3556 at 3 GHz

The Astrophysical Journal
Radio halos of edge-on galaxies are crucial for investigating cosmic ray propagation and magnetic field structures in galactic environments. We present VLA C-configuration S -band (2–4 GHz) observations of the spiral galaxy NGC 3556, a target from the ...
Jianghui Xu, Yang Yang, Jiang-Tao Li, Guilin Liu, Judith Irwin, Ralf-Jürgen Dettmar, Michael Stein, Theresa Wiegert, Q. Daniel Wang, Jayanne English   +9 more
doaj   +1 more source

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

A Simple Model of the Radio–Infrared Correlation Depending on Gas Surface Density and Redshift

The Astrophysical Journal
We introduce a simple parametric model of the radio–infrared correlation (i.e., the ratio between the IR luminosity and the 1.4 GHz radio luminosity, q _IR ) by considering the energy loss rate of high-energy cosmic-ray (CR) electrons governed by ...
Ilsang Yoon
doaj   +1 more source

China's 'sky eye': exploring the universe by measuring faint cosmic radio signals. [PDF]

Natl Sci Rev, 2023
Zhao W.
europepmc   +1 more source