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MAD UFOs: Magnetically Arrested Discs with persistent Ultra-Fast Outflows
- 1.0581744 - ASÚ 2024 RIV CZ eng C - Conference Paper (international conference)
Suková, Petra - Zajaček, M. - Karas, Vladimír
MAD UFOs: Magnetically Arrested Discs with persistent Ultra-Fast Outflows.
Proceedings of RAGtime 23/25: Workshops on black holes and neutron stars. Opava: Silesian University, 2023, s. 109-117. Publications of the Institute of Physics, 10. ISBN 978-80-7510-577-6.
[RAGtime /23.-25./. Opava (CZ), 27.11.2023-01.12.2023]
Grant - others:AV ČR(CZ) LQ100032102
Program: Prémie Lumina quaeruntur
Research Infrastructure: e-INFRA CZ - 90140
Institutional support: RVO:67985815
Keywords : accretion discs * black holes * active galactic nuclei
OECD category: Astronomy (including astrophysics,space science)
https://proceedings.physics.cz/wp-content/uploads/2024/01/RAGtime25_online_final.pdf
We study an outflow that develops in the MAD state in 3D GRMHD simulations. We show that the outflow can be accelerated to
relativistic velocities and persist over the course of our simulation. We compare the properties of the outflow from MAD discs with those launched by orbiting secondary at close orbit. The main difference is that the orbiting body launches a more coherent, quasiperiodic ultrafast outflow at lower velocities (v < 0.5c) while the outflow launched in the MAD state (without the body) has a stochastic behaviour and has anapproximately flat velocity distribution between lower anf higher outflow velocities, 0.2c < v < 0.3c and v > 0.5c.
Permanent Link: https://hdl.handle.net/11104/0349907
Number of the records: 1