Results 41 to 50 of about 2,193 (179)
Frontiers in Astronomy and Space Sciences, 2017 Prior to the Fermi-LAT era, only two classes of Active Galactic Nuclei (AGN) were thought to harbor relativistic jets that radiate up to gamma-ray energies: blazars and radio galaxies. The detection of variable gamma-ray emission from Narrow Line Seyfert
Maialen Arrieta-Lobo +2 more
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Asca Observations of Blazars [PDF]
Highlights of Astronomy, 1998 During the last years it has become evident that blazar class of AGN emit a lot of energy in the gamma-ray regime. It is generally thought that the non-thermal emission from blazars, observed from radio to GeV/TeV 7-rays, is radiation of very energetic particles via both synchrotron and Compton processes.
T. Takahashi, H. Kubo, G. Madejski
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Automated Polarimetry with Smaller Aperture Telescopes: The ROVOR Observatory
Galaxies, 2017 To better understand possible blazar jet mechanisms and morphologies, brighter prototypical objects are regularly monitored for variability in optical broad-band light.
Joseph Moody +12 more
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Astroparticle Physics, 1999 The kinetic energy of bulk relativistic plasma ejected from the central engine of blazars is converted into nonthermal particle energy in the comoving frame through a process of sweeping up material from the surrounding medium. The resulting deceleration of the bulk plasma introduces a number of effects which must be included in blazar modeling.
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Testing the blazar spectral sequence: X-ray-selected blazars [PDF]
Monthly Notices of the Royal Astronomical Society, 2008 11 figures and 6 tables.
Maraschi, L. +4 more
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Turbulent Cell Interpretation of Micro-Variability of BL Lacertae: Polarization
GalaxiesWe present the results of the analysis of nine polarization and micro-variability observations of BL Lacertae using a turbulent cell model. We perform a similar analysis of a simulated TEMZ light curve generated with the Turbulent Extreme Multi-Zone ...
James R. Webb +4 more
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Flare Duty Cycle of Gamma-Ray Blazars and Implications for High-energy Neutrino Emission
The Astrophysical Journal, 2023 Gamma-ray flares of blazars may be accompanied by high-energy neutrinos due to interactions of high-energy cosmic rays in the jet with photons, as suggested by the detection of the high-energy neutrino IceCube-170922A during a major gamma-ray flare from ...
Kenji Yoshida +3 more
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BLAZAR ANTI-SEQUENCE OF SPECTRAL VARIABILITY FOR INDIVIDUAL TeV BLAZARS [PDF]
International Journal of Modern Physics: Conference Series, 2013 We compile from literature the broadband SEDs of twelve TeV blazars observed simultaneously or quasi-simultaneously with Fermi/LAT and other instruments. Two SEDs are available for each of the objects and the state is identified as a low or high state according to its flux density at GeV/TeV band.
Zhang, Jin +2 more
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The Astrophysical Journal, 2002 Accepted for publication in the Astrophysical ...
Sikora, Marek +3 more
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Neutrino oscillations and blazars [PDF]
Astroparticle Physics, 1999 14 pages, 3 postscript figures, using elsart.sty, invited talk to appear in the Proceedings of the VERITAS Workshop on TeV Astrophysics of Extragalactic Sources, eds. M. Catanese, J. Quinn, and T. Weekes (special issue of Astropart. Phys.) ** replaced by a significantly extended version **
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