Results 31 to 40 of about 1,204 (229)

Extragalactic magnetic field constraints from ultrahigh-energy cosmic rays from local galaxies [PDF]

open access: green, 2021
We interpret the correlation between local star-forming galaxy positions and ultrahigh-energy cosmic-ray (UHECR) directions, recently detected by the Pierre Auger Observatory (PAO), in terms of physical parameters: the local density of sources and the ...
Arjen van Vliet   +3 more
openalex   +2 more sources

A method of measurement of extragalactic magnetic fields by TeV gamma ray telescopes [PDF]

open access: green, 2007
4 pages, 1 figureInternational audienceA method is proposed for measuring extragalactic magnetic fields in observations of TeV γ rays from distant sources.
A. Neronov, D. V. Semikoz
openalex   +2 more sources

Diffusion of cosmic rays at EeV energies in inhomogeneous extragalactic magnetic fields [PDF]

open access: greenJournal of Cosmology and Astroparticle Physics, 2014
Rafael Alves Batista, Gunter Sigl
exaly   +2 more sources

New Method for Investigating the Presence of Extragalactic Magnetic Fields [PDF]

open access: hybridJETP Letters
The extragalactic magnetic field could be detected by searching for signatures of the electromagnetic cascade initiated by high-energy photons on the intergalactic radiation and deflected by the field. This process produces a time delay and an extended gamma-ray halo around the source, which are looked for.
B. Stern, I. Tkachev
openalex   +3 more sources

Extragalactic magnetic fields unlikely generated at the electroweak phase transition [PDF]

open access: greenJournal of Cosmology and Astroparticle Physics, 2016
Robi Banerjee
exaly   +2 more sources

Deep Synoptic Array Science: Implications of Faraday Rotation Measures of Fast Radio Bursts Localized to Host Galaxies

open access: yesThe Astrophysical Journal Letters, 2023
Faraday rotation measures (RMs) of fast radio bursts (FRBs) offer the prospect of directly measuring extragalactic magnetic fields. We present an analysis of the RMs of 10 as yet nonrepeating FRBs detected and localized to host galaxies with robust ...
Myles B. Sherman   +23 more
doaj   +1 more source

Inhomogeneous magnetic fields in extragalactic radio sources [PDF]

open access: bronzeMonthly Notices of the Royal Astronomical Society, 1979
P. A. Hughes
openalex   +2 more sources

Extragalactic Magnetic Fields in the Extragalactic Universe and Scenarios Since Recombination for their Origin [PDF]

open access: bronzeHighlights of Astronomy, 2002
AbstractI briefly review recent observations, some related physics and modelling, and future possibilities relating to our knowledge of the strength, structure and evolution of extragalactic magnetic fields.
Philipp P. Kronberg
openalex   +2 more sources

A tool to understand emission mechanisms of blazars through their high‐energy gamma‐ray emission

open access: yesAstronomische Nachrichten, Volume 344, Issue 6, August 2023., 2023
The blazar SED is characterized by two energy components. Evidence suggests that the low‐energy component is generated by the synchrotron mechanism, but for the high‐energy component, the mechanism is still uncertain. Two main models have been proposed to explain this emission. According to the leptonic model, a correlation between the emission of both
Mabel Osorio   +3 more
wiley   +1 more source

Multiwavelength astrophysics of the blazar OJ 287 and the project MOMO

open access: yesAstronomische Nachrichten, Volume 344, Issue 4, May 2023., 2023
Abstract We are carrying out the densest and longest multiyear, multiwavelength monitoring project of OJ 287 ever done. The project MOMO (Multiwavelength Observations and Modeling of OJ 287) covers wavelengths from the radio to the high‐energy regime. A few selected observations are simultaneous with those of the Event Horizon Telescope (EHT).
S. Komossa   +21 more
wiley   +1 more source

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