Results 61 to 70 of about 1,204 (229)
The need for hard spectra sources of nearby heavy cosmic rays
EPJ 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
The 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
LOWER LIMIT ON THE STRENGTH AND FILLING FACTOR OF EXTRAGALACTIC MAGNETIC FIELDS [PDF]
The Astrophysical Journal, 2010 5 pages, 5 eps figures; v2: added discussion of time ...
Dolag, K. +3 more
openaire +3 more sources
Model of Super-Alfvénic MHD Turbulence and Statistics of Polarization
The Astrophysical JournalMHD 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
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CTAO sensitivity to axion-like particles [PDF]
EPJ Web of ConferencesAxion-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
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European Physical Journal C: Particles and Fields, 2022 The detection of very high-energy neutrinos by IceCube experiment supports the existence of a comparable gamma-ray counterpart from the same cosmic accelerators. Under the likely assumption that the sources of these particles are of extragalactic origin,
Leonardo Mastrototaro +6 more
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A Possible Solution to the Mystery of the ANITA Anomalous Events
Annalen der Physik, Volume 538, Issue 4, April 2026.In 2006 and 2014, the Antarctic Impulsive Transient Antenna (ANITA), a balloon‐borne radio observatory flying over Antarctica, detected two strange upward‐going radio pulse events that have not yet been explained by our current understanding of physics.
Massimo Villata
wiley +1 more source
MAGNETIC FIELD DISORDER AND FARADAY EFFECTS ON THE POLARIZATION OF EXTRAGALACTIC RADIO SOURCES [PDF]
The Astrophysical Journal, 2016 ABSTRACT We present a polarization catalog of 533 extragalactic radio sources that have a 2.3 GHz total intensity above 420 mJy from the S-band Polarization All Sky Survey, S-PASS, with corresponding 1.4 GHz polarization information from the NRAO VLA Sky Survey, NVSS.
Lamee, M +6 more
openaire +5 more sources
Journal of Geophysical Research: Space Physics, Volume 131, Issue 2, February 2026.Abstract The Laschamps geomagnetic excursion (≈41,000 years BP) was a period of significant weakening and incomplete reversal of the Earth's magnetic field. The weakening substantially reduced geomagnetic shielding against cosmic rays (CRs), which contribute to phenomena at Earth, such as cosmogenic isotope production, and atmospheric ionisation and ...
N. Larsen +4 more
wiley +1 more source
Magnetic fields in extragalactic jets
The Astrophysical Journal, 1987 Observations indicate that jets (i.e., charged particle beams) are emitted from the central black hole sources of active galactic nuclei and quasars. Magnetic fields are produced in e(-)-p or e(-)-e(+)-p jets when electrons (and positrons) are slowed with respect to protons in the jets. Interaction with an ambient interstellar gas or external radiation
openaire +1 more source