Název:
Perturbing the accretion flow onto a supermassive black hole by a passing star
Autoři:
Suková, Petra ; Zajaček, M. ; Witzany, V. ; Karas, Vladimír Typ dokumentu: Příspěvky z konference Konference/Akce: RAGtime /20.-22./, Opava (CZ), 20181015
Rok:
2020
Jazyk:
eng
Abstrakt: The close neighbourhood of a supermassive black hole contains not only accreting gas and dust, but also stellar-sized objects like stars, stellar-mass black holes, neutron stars, and dust-enshrouded objects that altogether form a dense nuclear star-cluster.These objects interact with the accreting medium and they perturb the otherwise quasi-stationary configuration of the accretion flow. We investigate how the passages of a star can influence the black hole gaseous environment with GRMHD 2D and3D simulations. We focus on the changes in the accretion rate and the associated emergence of outflowing blobs of plasma.
Klíčová slova:
accretion disks; active galactic nuclei; black holes Číslo projektu: GC19-01137J (CEP), 8J20PL037 Poskytovatel projektu: GA ČR, GA MŠk Zdrojový dokument: Proceedings of RAGtime 20/22: Workshops on black holes and neutron stars, ISBN 978-80-7510-433-5