静态和演化暗物质晕势中的反冲黑洞

IF 0.8 4区物理与天体物理 Q4 ASTRONOMY & ASTROPHYSICS

Serbian Astronomical Journal Pub Date : 2015-12-01 DOI:10.2298/SAJ150706001S

M. Smole

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引用次数: 2

摘要

我们在静态和不断演变的暗物质晕势中跟踪被踢黑洞的轨迹。我们探索了NFW和Einasto暗物质密度分布。所考虑的暗物质晕代表了大质量螺旋和椭圆场星系的宿主。我们研究了在各种红移下黑洞完全喷射所需的踢速临界幅值，发现与z = 1相比，在z = 7时，比z = 1低40%的踢速可以将黑洞从它们的主晕中移除。静态势和演化势之间的最大差别出现在黑洞喷射的临界速度附近和高红移处。当比较NFW和Einasto密度分布时，需要比NFW剖面所描述的暗物质晕完全去除黑洞的踢出速度高30%。

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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. The considered dark matter halos represent hosts of massive spiral and elliptical field galaxies. We study the 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 the 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 the NFW profile.

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来源期刊

Serbian Astronomical Journal ASTRONOMY & ASTROPHYSICS-

CiteScore

1.00

自引率

0.00%

发文量

审稿时长

12 weeks

期刊介绍： Serbian Astronomical Journal publishes original observations and researches in all branches of astronomy. The journal publishes: Invited Reviews - review article on some up-to-date topic in astronomy, astrophysics and related fields (written upon invitation only), Original Scientific Papers - article in which are presented previously unpublished author''s own scientific results, Preliminary Reports - original scientific paper, but shorter in length and of preliminary nature, Professional Papers - articles offering experience useful for the improvement of professional practice i.e. article describing methods and techniques, software, presenting observational data, etc. In some cases the journal may publish other contributions, such as In Memoriam notes, Obituaries, Book Reviews, as well as Editorials, Addenda, Errata, Corrigenda, Retraction notes, etc.