General Relativistic Magnetohydrodynamic Simulations of Accreting Tori: Resolution Study

@inproceedings{77830,
   author = {Karakonstantakis, Angelos and Lančová, Debora and Čemeljić, Miljenko},
   address = {Opava},
   booktitle = {Proceedings of RAGtime 23-25: Workshops on black holes and neutron stars},
   keywords = {accretion; accretion disks; black hole physics; radiation GRMHD},
   howpublished = {tištěná verze "print"},
   language = {eng},
   location = {Opava},
   isbn = {978-80-7510-577-6},
   pages = {173-185},
   publisher = {Slezská univerzita v Opavě, Fyzikální ústav v Opavě},
   title = {General Relativistic Magnetohydrodynamic Simulations of Accreting Tori: Resolution Study},
   url = {https://proceedings.physics.cz/wp-content/uploads/2023/12/23_25_18_kar.pdf},
   year = {2023}
}

TY  - JOUR
ID  - 77830
AU  - Karakonstantakis, Angelos - Lančová, Debora - Čemeljić, Miljenko
PY  - 2023
TI  - General Relativistic Magnetohydrodynamic Simulations of Accreting Tori: Resolution Study
PB  - Slezská univerzita v Opavě, Fyzikální ústav v Opavě
CY  - Opava
SN  - 9788075105776
KW  - accretion
KW  - accretion disks
KW  - black hole physics
KW  - radiation GRMHD
UR  - https://proceedings.physics.cz/wp-content/uploads/2023/12/23_25_18_kar.pdf
N2  - We present two-dimensional general relativistic radiative magnetohydrodynamical simulations of accretion disks around non-rotating stellar-mass black hole. We study the evolution of an equilibrium accreting torus in different grid resolutions to determine an adequate resolution to produce a stable turbulent disk driven by magneto-rotational instability. We evaluate the quality parameter, Qθ, from the ratio of MRI wavelength to the grid zone size and examine the effect of resolution in various quantitative values such as the accretion rate, magnetisation, fluxes of physical quantities and disk scale-height. We also analyse how the resolution affects the formation of plasmoids produced in the magnetic reconnection events.
ER  - 

KARAKONSTANTAKIS, Angelos, Debora LANČOVÁ and Miljenko ČEMELJI$\backslash$'C. General Relativistic Magnetohydrodynamic Simulations of Accreting Tori: Resolution Study. In \textit{Proceedings of RAGtime 23-25: Workshops on black holes and neutron stars}. Opava: Slezská univerzita v Opavě, Fyzikální ústav v Opavě, 2023, p.~173-185. ISBN~978-80-7510-577-6.