On the origin of black hole spin in high-mass black hole binaries: Cygnus X-1
2011 (English)In: Monthly notices of the Royal Astronomical Society, ISSN 0035-8711, E-ISSN 1365-2966, Vol. 412, no 4, 2260-2264 p.Article in journal (Refereed) Published
To date, there have been several detections of high-mass black hole binaries in both the Milky Way and other galaxies. For some of these, the spin parameter of the black hole has been estimated. As many of these systems are quite tight, a suggested origin of the spin is angular momentum imparted by the synchronous rotation of the black hole progenitor with its binary companion. Using Cygnus X-1, the best studied high-mass black hole binary, we investigate this possibility. We find that such an origin of the spin is not likely, and our results point rather to the spin being the result of processes during the collapse.
Place, publisher, year, edition, pages
2011. Vol. 412, no 4, 2260-2264 p.
black hole physics, binaries: close, X-rays: binaries, X-rays: individual: Cygnus X-1
Astronomy, Astrophysics and Cosmology
IdentifiersURN: urn:nbn:se:kth:diva-33460DOI: 10.1111/j.1365-2966.2010.18050.xISI: 000289295800010ScopusID: 2-s2.0-79953792500OAI: oai:DiVA.org:kth-33460DiVA: diva2:418540
FunderSwedish Research Council, 2009-691, 2008-4089
QC 201507212011-05-232011-05-092015-07-21Bibliographically approved