| Issue |
EPJ Web of Conferences
Volume 39, 2012
Tidal Disruption Events and AGN Outbursts
|
|
|---|---|---|
| Article Number | 07004 | |
| Number of page(s) | 4 | |
| Section | New Science with Flares, Gravitational Waves and Binary Black Holes | |
| DOI | https://doi.org/10.1051/epjconf/20123907004 | |
| Published online | 18 December 2012 | |
https://doi.org/10.1051/epjconf/20123907004
Tidal disruption of asteroids by supermassive black holes
1 University of Ljubljana, Faculty of Mathematics and Physics, Jadranska 19, 1000 Ljubljana, Slovenia
2 INAF – Astronomical Observatory of Padova, Vicolo Osservatorio 5, 35122 Padova, Italy
a e-mail: uros.kostic@fmf.uni-lj.si
The compact radio source Sgr A* at the centre of our Galaxy harbours a super-massive black hole, and is therefore the nearest laboratory for testing the super-massive black hole astrophysics and environment. Since it is not an active galactic nucleus, it also offers the possibility of observing the capture of low-mass objects, such as comets or asteroids, that may orbit the central black hole. In this paper we discuss conditions for tidal disruption of low-mass objects and predictions of the appearance and light curve of such events, as well as their relevance for the X-ray and infra-red flares detected in Sgr A*. The modelled light curves of such tidal disruption events bear marks of the strong gravitational field: tidal squeezing and elongation of the object, gravitational lensing, aberration of light, and Doppler effects. Finally, we show that this model is able to reproduce and fit X-ray flares.
© Owned by the authors, published by EDP Sciences, 2012
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