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On the origin of black hole spin in high-mass black hole binaries: Cygnus X-1

In English

Författare

Summary, in English

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.

Publiceringsår

2011

Språk

Engelska

Sidor

2260-2264

Publikation/Tidskrift/Serie

Monthly Notices of the Royal Astronomical Society

Volym

412

Issue

4

Dokumenttyp

Artikel i tidskrift

Förlag

Oxford University Press

Ämne

  • Astronomy, Astrophysics and Cosmology

Nyckelord

  • black hole physics
  • binaries: close
  • X-rays: binaries
  • X-rays:
  • individual: Cygnus X-1

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 1365-2966