Recoiling black holes in static and evolving dark matter halo potential
We follow trajectories of kicked black holes in static and evolving dark matter halo potential. We explore both NFW and Einasto dark matter density distributions. Considered dark matter halos represent hosts of massive spiral and elliptical field galaxies. We study critical amplitude of kic...
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| Format: | Article |
| Language: | English |
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Astronomical Observatory, Department of Astronomy, Belgrade
2015-01-01
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| Series: | Serbian Astronomical Journal |
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| Online Access: | http://www.doiserbia.nb.rs/img/doi/1450-698X/2015/1450-698X1500001S.pdf |
| Summary: | We follow trajectories of kicked black holes in static and evolving dark
matter halo potential. We explore both NFW and Einasto dark matter density
distributions. Considered dark matter halos represent hosts of massive spiral
and elliptical field galaxies. We study critical amplitude of kick velocity
necessary for complete black hole ejection at various redshifts and find that
~40% lower kick velocities can remove black holes from their host haloes at z
= 7 compared to z = 1. The greatest difference between static and evolving
potential occurs near the critical velocity for black hole ejection and at
high redshifts. When NFW and Einasto density distributions are compared ~30%
higher kick velocities are needed for complete removal of BHs from dark
matter halo described by NFW profile. [Projekat Ministarstva nauke Republike
Srbije, br. 176021: Visible and invisible matter in nearby galaxies: Theory
and observations] |
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| ISSN: | 1450-698X 1820-9289 |