Original title: Perturbing the accretion flow onto a supermassive black hole by a passing star
Authors: Suková, Petra ; Zajaček, M. ; Witzany, V. ; Karas, Vladimír
Document type: Papers
Conference/Event: RAGtime /20.-22./, Opava (CZ), 20181015
Year: 2020
Language: eng
Abstract: 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.
Keywords: accretion disks; active galactic nuclei; black holes
Project no.: GC19-01137J (CEP), 8J20PL037
Funding provider: GA ČR, GA MŠk
Host item entry: Proceedings of RAGtime 20/22: Workshops on black holes and neutron stars, ISBN 978-80-7510-433-5

Institution: Astronomical Institute AS ČR (web)
Document availability information: Fulltext is available at external website.
External URL: http://proceedings.physics.cz/images/proc21/suk.pdf
Original record: http://hdl.handle.net/11104/0317194

Permalink: http://www.nusl.cz/ntk/nusl-432436


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Research > Institutes ASCR > Astronomical Institute
Conference materials > Papers