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Nonthermal processes in hot accretion flows onto supermassive black holes: an inhomogeneous model
(EDP Sciences, 2021-05)
Context. Many low-redshift active galactic nuclei harbor a supermassive black hole accreting matter at low or medium rates. At such rates, the accretion flow usually consists of a cold optically thick disk, plus a hot, low ...
Magnetised accretion discs in Kerr spacetimes: II. Hot spots
(EDP Sciences, 2016-03)
Context. Quasi-periodic variability has been observed in a number of X-ray binaries that harbor black hole candidates. In general relativity, black holes are uniquely described by the Kerr metric and, according to the ...
High-energy signatures of binary systems of supermassive black holes
(EDP Sciences, 2016-04)
Context. Binary systems of supermassive black holes are expected to be strong sources of long gravitational waves prior to merging.These systems are good candidates to be observed with forthcoming space-borne detectors. ...
Radiation from the impact of broad-line region clouds onto AGN accretion disks
(EDP Sciences, 2020-04)
Context. Active galactic nuclei are supermassive black holes surrounded by an accretion disk, two populations of clouds, bipolar jets, and a dusty torus. The clouds move in Keplerian orbits at high velocities. In particular, ...
Coupling between the accreting corona and the relativistic jet in the microquasar GRS 1915+105
(Nature Research, 2022-03)
Accreting black holes emit highly collimated radio jets expanding at speeds approaching light speed. Some of these jets appear to be expanding at superluminal speeds due to geometric effects. While magnetic fields are ...
Equatorial outflows driven by jets in Population III microquasars
(Springer, 2021-01)
Binary systems of Population III can evolve to microquasars when one of the stars collapses into a black hole. When the compact object accretes matter at a rate greater than the Eddington rate, powerful jets and winds ...
High-energy processes in starburst-driven winds
(Wiley Blackwell Publishing, Inc, 2020-08)
Starburst galaxies generate large-scale winds powered by the activity in the starforming regions located in the galactic disks. Fragmentation of the disk produced bythe outbreak of the wind results in the formation of ...
MASTER Optical Polarization Variability Detection in the Microquasar V404 Cyg/GS 2023+33
(IOP Publishing, 2016-12-09)
On 2015 June 15, the Swift space observatory discovered that the Galactic black hole candidate V404 Cyg was undergoing another active X-ray phase, after 25 years of inactivity. The 12 telescopes of the MASTER Global Robotic ...
Model for Population III microquasars
(EDP Sciences, 2019-09)
Current simulations indicate that the first stars were formed predominantly in binary systems. The study of the contribution of the first accreting binary systems to the reionization and heating of the intergalactic medium ...
Model for Population III microquasars
(EDP Sciences, 2019-09)
Context. Current simulations indicate that the first stars were formed predominantly in binary systems. Studying the contribution of the first accreting binary systems to the reionization and heating of the intergalactic ...