Modelling the bow–shock evolution along the DSO/G2 orbit in the Galactic centre

0484923 - ASÚ 2018 RIV CZ eng C - Konferenční příspěvek (zahraniční konf.)
Štofanová, L. - Zajaček, M. - Kunneriath, D. - Eckart, A. - Karas, Vladimír
Modelling the bow–shock evolution along the DSO/G2 orbit in the Galactic centre.
Proceedings of RAGtime 17/19: Workshops on black holes and neutron stars. Opava: Silesian University, 2017, s. 153-161. Publications of the Institute of Physics, 8. ISBN 9788075102577. ISSN 2336-5668.
[RAGtime /17.-19./. Opava (CZ), 17.11.2015-19.11.2015]
Grant CEP: GA MŠMT(CZ) LTAUSA17095; GA ČR GB14-37086G
Institucionální podpora: RVO:67985815
Klíčová slova: galactic center * Sagittarius A* * astrophysical processes
Obor OECD: Astronomy (including astrophysics,space science)
http://proceedings.physics.cz/images/proc17/sto.pdf

A radially directed flow of gaseous environment from a supermassive black hole affects the evolution of a bow–shock that develops along the orbit of an object passing through the pericentre. The bow–shock exhibits asymmetry between the approaching and receding phases, as can be seen in calculations of the bow-shock size, the velocity profile along the shocked layer, and the surface density of the bow–shock,
and by emission-measure maps. We discuss these effects in the context of the recent pericentre transit of DSO/G2 near Sagittarius A*.
Trvalý link: http://hdl.handle.net/11104/0280046