Browsing by Subject "Quasars: general"
Now showing items 1-7 of 7
-
Authenticating the presence of a relativistic massive black hole binary in OJ 287 using its general relativity centenary flare: improved orbital parameters
(IOP Publishing, 2018)Results from regular monitoring of relativistic compact binaries like PSR 1913+16 are consistent with the dominant (quadrupole) order emission of gravitational waves (GWs). We show that observations associated with the ... -
Energy loss in intergalactic pair beams: particle-in-cell simulation
(EDP Sciences, 2016)Aims. The change in the distribution function of electron-positron pair beams determines whether GeV photons can be produced as secondary radiation from TeV photons. We will discuss the instabilities driven by pair ... -
Fermi/LAT counterparts of IceCube neutrinos above 100 TeV
(EDP Sciences, 2018)The IceCube Collaboration has published four years of data and the observed neutrino flux is significantly in excess of the expected atmospheric background. Due to the steeply falling atmospheric background spectrum, events ... -
Gravitational light-bending prevents γγ absorption in gravitational lenses
(EDP Sciences, 2016)The magnification effect that is due to gravitational lensing enhances the chances of detecting moderate-redshift (z ~ 1) sources in very high-energy (VHE; E > 100 GeV) γ-rays by ground-based atmospheric Cherenkov telescope ... -
Possible accretion disk origin of the emission variability of a blazar jet
(IOP Publishing, 2018)We analyze X-ray light curves of the blazar Mrk 421 obtained from the Soft X-ray Imaging Telescope (SXT) and the Large Area X-ray Proportional Counter (LAXPC) instrument on board the Indian space telescope AstroSat and ... -
Relativistic shear flow between electron-ion and electron-positron plasmas and astrophysical applications
(IOP, 2017)We present particle-in-cell simulation results of relativistic shear boundary layers between electron–ion and electron–positron plasmas and discuss their potential applications to astrophysics. Specifically, we find that ... -
A swirling jet in the quasar 1308+326
(EDP Sciences, 2017)Context. Despite numerous and detailed studies of the jets of active galactic nuclei (AGN) on pc-scales, many questions are still debated. The physical nature of the jet components is one of the most prominent unsolved ...