FLASH-light on the ring: hydrodynamic simulations of expanding supernova shells near supermassive black holes

0557047 - ASÚ 2023 RIV GB eng J - Journal Article
Barna, Barnabas - Palouš, Jan - Ehlerová, Soňa - Wünsch, Richard - Morris, M. - Vermot, Pierre
FLASH-light on the ring: hydrodynamic simulations of expanding supernova shells near supermassive black holes.
Monthly Notices of the Royal Astronomical Society. Roč. 510, č. 4 (2022), s. 5266-5279. ISSN 0035-8711. E-ISSN 1365-2966
R&D Projects: GA ČR(CZ) GA19-15480S
Grant - others:Ga MŠk(CZ) LM2015070
Institutional support: RVO:67985815
Keywords : numerical simulations * supernova remnants * galaxy centre
OECD category: Astronomy (including astrophysics,space science)
Impact factor: 4.8, year: 2022
Method of publishing: Limited access
https://doi.org/10.1093/mnras/stab3723

The aims of this paper are to extend our investigation of the importance of SNe for inducing accretion on to an SMBH and carry out a comparison between the fully hydrodynamic code flash and the much less computationally intensive code ring, which uses the thin shell approximation. We simulate 3D expanding shells in a gravitational potential similar to that of the GC with a variety of homogeneous and turbulent environments. In homogeneous media, we find convincing agreement between flash and ring in the shapes of shells and their equivalent radii throughout their whole evolution until they become subsonic. In highly inhomogeneous, turbulent media, there is also a good agreement of shapes and sizes of shells, and of the times of their first contact with the central 1-pc sphere, where we assume that they join the accretion flow. The comparison supports the proposition that an SN occurring at a galactocentric distance of 5 pc typically drives 1-3 M-circle dot into the central 1 pc around the GC.
Permanent Link: http://hdl.handle.net/11104/0331643