SIMBAD references

2019MNRAS.484.3279P - Mon. Not. R. Astron. Soc., 484, 3279-3290 (2019/April-2)

Direct N-body simulation of the Galactic centre.

PANAMAREV T., JUST A., SPURZEM R., BERCZIK P., WANG L. and ARCA SEDDA M.

Abstract (from CDS):

We study the dynamics and evolution of the Milky Way nuclear star cluster performing a high-resolution direct one-million-body simulation. Focusing on the interactions between such stellar systems and the central supermassive black hole, we find that different stellar components adapt their overall distribution differently. After 5 Gyr, stellar mass black holes are characterized by a spatial distribution with power-slope -1.75, fully consistent with the prediction of Bahcall-Wolf pioneering work. Using the vast amount of data available, we infer the rate for tidal disruption events, being 4 x 10–6 per yr, and estimate the number of objects that emit gravitational waves during the phases preceding the accretion on to the super-massive black hole, ∼270 per Gyr. We show that some of these sources could form extreme mass-ratio inspirals. We follow the evolution of binary stars population, showing that the initial binary fraction of 5 per cent drops down to 2.5 per cent inside the inner parsec. Also, we explored the possible formation of binary systems containing a compact object, discussing the implications for millisecond pulsars formation and the development of Ia Supernovae.

Abstract Copyright: © 2019 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): black hole physics - stars: kinematics and dynamics - pulsars: general

Simbad objects: 4

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