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          Institute: MPI für extraterrestrische Physik     Collection: High Energy Astrophysics at MPE     Display Documents



ID: 5892.0, MPI für extraterrestrische Physik / High Energy Astrophysics at MPE
Evidence of spin and energy extraction in a Galactic black hole candidate: The XMM-Newton/EPIC-pn spectrum of XTE J1650-500
Authors:Miller, J. M.; Fabian, A. C.; Wijnands, R.; Reynolds, C. S.; Ehle, M.; Freyberg, M. J.; van der Klis, M.; Lewin, W. H. G.; Sanchez-Fernandez, C.; Castro-Tirado, A. J.
Language:English
Date of Publication (YYYY-MM-DD):2002-05-10
Title of Journal:The Astrophysical Journal
Journal Abbrev.:Astrophys. J.
Volume:570
Issue / Number:2
Start Page:L69
End Page:L73
Review Status:Peer-review
Audience:Experts Only
Abstract / Description:We observed the Galactic black hole candidate XTE J1650-500 early in its fall of 2001 outburst with the XMM-Newton European Photon Imaging pn Camera (EPIC-pn). The observed spectrum is consistent with the source having been in the "very high" state. We find a broad, skewed Fe Kalpha emission line that suggests the primary in this system may be a Kerr black hole and that indicates a steep disk emissivity profile that is hard to explain in terms of a standard accretion disk model. These results are quantitatively and qualitatively similar to those from an XMM-Newton observation of the Seyfert galaxy MCG -6-30- 15. The steep emissivity in MCG -6-30-15 may be explained by the extraction and dissipation of rotational energy from a black hole with nearly maximal angular momentum or from material in the plunging region via magnetic connections to the inner accretion disk. If this process is at work in both sources, an exotic but fundamental general relativistic prediction may be confirmed across a factor of 10(6) in black hole mass. We discuss these results in terms of the accretion flow geometry in stellar-mass black holes and the variety of enigmatic phenomena often observed in the very high state.
Free Keywords:black hole physics; X-rays : individual (XTE J1650-500); X-rays : stars
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für extraterrestrische Physik
External Affiliations:MIT, Ctr Space Res, 70 Vassar St, Cambridge, MA 02139 USA; MIT, Ctr Space Res, Cambridge, MA 02139 USA; MIT, Dept Phys, Cambridge, MA 02139 USA; Univ Maryland, Dept Astron, College Pk, MD 20742 USA; Villafranca Satellite Tracking Stn, XMM Newton Sci Operat Ctr, E-28080 Madrid, Spain; ESA, Noordwijk, Netherlands; Max Planck Inst Extraterr Phys, D-85741 Garching, Germany; Univ Amsterdam, Astron Inst Anton Pannekoek, NL-1098 SJ Amsterdam, Netherlands; Ctr High Energy Astrophys, NL-1098 SJ Amsterdam, Netherlands; INTA, Lab Astrofis Espacial & Fis Fundamental, E-28080 Madrid, Spain; CSIC, Inst Astrofis Andalucia, E-18080 Granada, Spain
Identifiers:ISI:000175527500006
ISSN:0004-637X
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