Results 121 to 130 of about 24,339 (257)

A FLASH on blazars

open access: yesAstronomy & Astrophysics
This work investigates the multi-wavelength properties of 165 sources from the Fermi Large Area Telescope Fourth Source Catalog Data Release 4 (4FGL), with the aim of identifying counterparts in the Australian SKA Pathfinder (ASKAP) First Large Absorption Survey in the HI (FLASH) continuum.
M. Behiri   +8 more
openaire   +2 more sources

Suborbital Fermi/LAT Analysis of the Brightest Gamma-Ray Flare of Blazar 3C 454.3

open access: yesGalaxies, 2017
Recent detection of suborbital gamma-ray variability of Flat Spectrum Radio Quasar (FSRQ) 3C 279 by Fermi Large Area Telescope (LAT) is in severe conflict with established models of blazar emission.
Krzysztof Nalewajko
doaj   +1 more source

Millimeter-VLBI Detection and Imaging of the Gravitationally Lensed Gamma-Ray Blazar JVAS B0218+357 [PDF]

open access: green, 2020
Kazuhiro Hada   +4 more
openalex   +1 more source

The Fermi blazars’ divide based on the diagnostic of the SEDs peak frequencies [PDF]

open access: green, 2010
A. Tramacere   +8 more
openalex   +1 more source

Extreme Blazars Observed with MAGIC: Second Catalog Release

open access: yesThe Astrophysical Journal
Extremely high-peaked BL Lac objects—also named extreme blazars —are among the most energetic and persistent extragalactic accelerators in the Universe, defined by a synchrotron emission peaking above 10 ^17 Hz in X-rays.
K. Abe   +356 more
doaj   +1 more source

PKS J0805-0111: A Second Owens Valley Radio Observatory Blazar Showing Highly Significant Sinusoidal Radio Variability—The Tip of the Iceberg

open access: yesThe Astrophysical Journal
Owens Valley Radio Observatory observations of the supermassive black hole binary (SMBHB) candidate PKS 2131−021 revealed, for the first time, six likely characteristics of the phenomenology exhibited by SMBHBs in blazars, of which the most unexpected ...
P. V. de la Parra   +25 more
doaj   +1 more source

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