Results 21 to 30 of about 298 (165)

Fast Radio Bursts as Probes of Magnetic Fields in Galaxies at z < 0.5

open access: yesThe Astrophysical Journal, 2023
We present a sample of nine fast radio bursts (FRBs) from which we derive magnetic field strengths of the host galaxies represented by normal, z < 0.5 star-forming galaxies with stellar masses M _* ≈ 10 ^8 –10 ^10.5 M _⊙ .
Alexandra G. Mannings   +8 more
doaj   +1 more source

On irregularities in the cosmic ray spectrum of \(10^{16}-10^{18}\) eV range

open access: yesSciPost Physics Proceedings, 2023
Existing small, medium and large arrays for the study of cosmic rays of ultra-high energies are aimed for obtaining information about our galaxy and extragalactic space, namely to search and study astronomical objects that produce the flux of ...
Stanislav P. Knurenko, Igor S. Petrov
doaj   +1 more source

The need for hard spectra sources of nearby heavy cosmic rays

open access: yesEPJ Web of Conferences, 2013
Using recent Auger energy spectrum and composition analysis results, an investigation is carried out into the requirements placed on the UHECR sources.
Taylor Andrew M.
doaj   +1 more source

Sensitivity of Cross-Correlation Studies by Using Xmax Information

open access: yesGalaxies, 2022
The investigation about cosmic-ray sources through the study of the arrival direction of the particles is completely dependent on primary mass compositions.
Cynthia V. Ventura   +3 more
doaj   +1 more source

CRPropa high statistics simulations for UHECR anisotropy studies [PDF]

open access: yesEPJ Web of Conferences, 2023
Despite the great progress made by modern cosmic ray observatories, the origin and acceleration mechanism of ultra-high-energy cosmic rays (UHECRs) remains unsolved problems to this day.
Rossoni Simone, Sigl Günter
doaj   +1 more source

The quest for extragalactic magnetic fields [PDF]

open access: yesProceedings of Neutrino Oscillation Workshop — PoS(NOW2016), 2017
3 pages, 1 figure, Proceeding of Neutrino Oscillation Workshop, 4-11 September 2016, Otranto (Italy)
openaire   +2 more sources

The Magnetic Fields of Starburst Galaxies. I. Identification and Characterization of the Thermal Polarization in the Galactic Disk and Outflow

open access: yesThe Astrophysical Journal, 2023
Far-infrared polarized emission by means of magnetically aligned dust grains is an excellent tracer of the magnetic fields (B-fields) in the cold phase of the galactic outflows of starburst galaxies.
Enrique Lopez-Rodriguez
doaj   +1 more source

Propagation of ultrahigh energy protons in regular extragalactic magnetic fields [PDF]

open access: yesPhysical Review D, 2003
6 pages, 4 figures Comments for revised version: 12 pages, 12 figures. Enlarged discussion of effects on cosmic ray spectrum.
Stanev, Todor   +2 more
openaire   +3 more sources

Model of Super-Alfvénic MHD Turbulence and Statistics of Polarization

open access: yesThe Astrophysical Journal
MHD turbulence driven at velocities higher than the Alfvén velocity, i.e., super-Alfvénic turbulence, is widely spread in astrophysical environments, including galaxy clusters and molecular clouds.
A. Lazarian, D. Pogosyan, Yue Hu
doaj   +1 more source

CTAO sensitivity to axion-like particles [PDF]

open access: yesEPJ Web of Conferences
Axion-like particles (ALPs) are a common feature in several extensions of the StandardModel, arising, for example, as a solution to the strong CP problem in quantum chromodynamics, or as a prediction of string theories.
Schiavone Francesco   +2 more
doaj   +1 more source

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