Results 171 to 180 of about 33,870 (293)

OJ287: deciphering the ‘Rosetta stone of blazars’

open access: yes, 2018
OJ287 is the best candidate active galactic nucleus (AGN) for hosting a supermassive binary black hole (SMBBH) at very close separation. We present 120 Very Long Baseline Array (VLBA) observations (at 15 GHz) covering the time between April 1995 and ...
S. Britzen   +16 more
semanticscholar   +1 more source

Exploring γ-Ray Flares from High-Redshift Blazar B3 1343+451 at GeV Energies

open access: yesUniverse
We study the temporal and spectral variability properties of the high-redshift blazar B3 1343+451 utilizing Fermi-LAT data from 2008 to 2022 in the energy range of 0.1–300 GeV.
Xiongfei Geng   +8 more
doaj   +1 more source

Multifrequency Spectra of EXOSAT Blazars [PDF]

open access: bronze, 1994
K. K. Ghosh, S. Soundararajaperumal
openalex   +1 more source

Fermi detected blazars seen by INTEGRAL

open access: yes, 2009
Multiwavelength observations are essential to constrain physical parameters of the blazars observed by Fermi/LAT. Among the 187 AGN significantly detected in public INTEGRAL data above 20 keV by the imager IBIS/ISGRI, 20 blazars were detected.
Beckmann, V., Ricci, C., Soldi, S.
core   +1 more source

Demographics of Blazars

open access: yes, 2000
invited talk at the Workshop "Blazar Demographics and Physics" Baltimore, July 2000, ASP Conf. Series, P. Padovani and C. M. Urry eds., in press. (6 pages, LaTex, 10 PostScript figures, uses newpasp.sty).
openaire   +2 more sources

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