S0-2 Star, G1- and G2-objects, and Flaring Activity of the Milky Way's Galactic Center Black Hole in 2019
Abstract
In 2019, the Galactic center black hole Sgr A* produced an unusually high number of bright near-infrared flares, including the brightest-ever detected flare. We propose that this activity was triggered by the near simultaneous infall of material shed by G1 and G2 objects due to their interaction with the background accretion flow. We discuss mechanisms by which S-stars and G-objects shed material, and estimate both the quantity of material and the infall time to reach the black hole.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- March 2021
- DOI:
- arXiv:
- arXiv:2010.04234
- Bibcode:
- 2021ApJ...910L...1M
- Keywords:
-
- Black holes;
- Astrophysical black holes;
- Galactic center;
- Accretion;
- 162;
- 98;
- 565;
- 14;
- Astrophysics - Astrophysics of Galaxies
- E-Print:
- v1: 8 pages, 1 table. v2: 7 pages, 1 table. Abstract edited, section 3 and 4 are shortened, the table expanded, several comments and references added. Accepted to ApJL