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          Institute: MPI für extraterrestrische Physik     Collection: Theory & Complex Plasmas     Display Documents

ID: 10776.0, MPI für extraterrestrische Physik / Theory & Complex Plasmas
The runaway black hole GRO J1655-40
Authors:Mirabel, I. F.; Mignani, R.; Rodrigues, I.; Combi, J. A.; Rodriguez, L. F.; Guglielmetti, F.
Date of Publication (YYYY-MM-DD):2002-11
Title of Journal:Astronomy & Astrophysics
Journal Abbrev.:Astron. Astrophys.
Issue / Number:2
Start Page:595
End Page:599
Review Status:Peer-review
Audience:Experts Only
Abstract / Description:We have used the Hubble Space Telescope to measure the motion in the sky and compute the galactocentric orbit of the black hole X-ray binary GRO J1655-40. The system moves with a runaway space velocity of 112 +/- 18 km s(-1) in a highly eccentric (e = 0.34 +/- 0.05) orbit. The black hole was formed in the disk at a distance greater than 3 kpc from the Galactic centre and must have been shot to such an eccentric orbit by the explosion of the progenitor star. The runaway linear momentum and kinetic energy of this black hole binary are comparable to those of solitary neutron stars and millisecond pulsars. GRO J1655-40 is the first black hole for which there is evidence for a runaway motion imparted by a natal kick in a supernova explosion.
Free Keywords:stars : individual : GRO J1655-40; black hole physics; X-rays : binaries; astrometry
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für extraterrestrische Physik
External Affiliations:CEA Saclay, Serv Astrophys, F-91191 Gif Sur Yvette, France; CEA Saclay, Serv Astrophys, F-91191 Gif Sur Yvette, France; Consejo Nacl Invest Cient & Tecn, Inst Astron & Fis Espacio, RA-1033 Buenos Aires, DF, Argentina; European So Observ, D-85740 Garching, Germany; Inst Argentino Radioastron, RA-1894 Buenos Aires, DF, Argentina; UNAM, Inst Astron, Morelia 58089, Michoacan, Mexico; Max Planck Inst Extraterr Phys, D-85748 Garching, Germany; Max Planck Inst Plasma Phys, D-85748 Garching, Germany
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