Stellar-Mass Black Holes and Their Progenitors

Details Stellar-Mass Black Holes and Their Progenitors Stellar-Mass Black Holes and Their Progenitors

2009-02-26

arxiv.org/abs/0902.4677v1

Astronomy and Astrophysics

Astrophysics

High Energy Astrophysical Phenomena

Astro 2010 Science White Paper

Scientific paper

If a black hole has a low spin value, it must double its mass to reach a high spin parameter. Although this is easily accomplished through mergers or accretion in the case of supermassive black holes in galactic centers, it is impossible for stellar-mass black holes in X-ray binaries. Thus, the spin distribution of stellar-mass black holes is almost pristine, largely reflective of the angular momentum imparted at the time of their creation. This fact can help provide insights on two fundamental questions: What is the nature of the central engine in supernovae and gamma-ray bursts? and What was the spin distribution of the first black holes in the universe?

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