The origin of the black hole offset in M31
| Autor: | Pierre Boldrini |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Physics
Offset (computer science) 010308 nuclear & particles physics Astrophysics::High Energy Astrophysical Phenomena Dark matter FOS: Physical sciences Astronomy and Astrophysics Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics 01 natural sciences Central region Astrophysics - Astrophysics of Galaxies Black hole General Relativity and Quantum Cosmology Space and Planetary Science Astrophysics of Galaxies (astro-ph.GA) 0103 physical sciences Dynamical friction 010303 astronomy & astrophysics Astrophysics::Galaxy Astrophysics |
| Popis: | Using state-of-the-art high-resolution fully GPU N-body simulations, we demonstrate for the first time that the infall of a dark matter rich satellite naturally explains a present black hole offset by sub-parsecs in M31. Observational data of the tidal features provide stringent constraints on the initial conditions of our simulations. The heating of the central region of M31 by the satellite via dynamical friction entails a significant black hole offset after the first pericentric passage. After having reached its maximum offset, the massive black hole sinks towards the M31 centre due to dynamical friction and it is determined to be offset by sub-parsecs as derived by observations. 4 pages, 4 figures. Version to appear in MNRAS Letters |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|