Show simple item record

dc.contributor.authorMcClintock, Jeffrey E.
dc.contributor.authorShafee, Rebecca
dc.contributor.authorNarayan, Ramesh
dc.contributor.authorRemillard, Ronald A.
dc.contributor.authorDavis, Shane W.
dc.contributor.authorLi, Li-Xin
dc.date.accessioned2019-09-22T14:23:44Z
dc.date.issued2006
dc.identifier.citationMcClintock, Jeffrey E., Rebecca Shafee, Ramesh Narayan, Ronald A. Remillard, Shane W. Davis, and Li‐Xin Li. 2006. “The Spin of the Near‐Extreme Kerr Black Hole GRS 1915+105.” The Astrophysical Journal 652 (1): 518–39. https://doi.org/10.1086/508457.
dc.identifier.issn0004-637X
dc.identifier.issn1538-4357
dc.identifier.urihttp://nrs.harvard.edu/urn-3:HUL.InstRepos:41384867*
dc.description.abstractBased on a spectral analysis of the X-ray continuum that employs a fully relativistic accretion disk model, we conclude that the compact primary of the binary X-ray source GRS 1915+105 is a rapidly rotating Kerr black hole. We find a lower limit on the dimensionless spin parameter of a(*) > 0.98. Our result is robust in the sense that it is independent of the details of the data analysis and insensitive to the uncertainties in the mass and distance of the black hole. Furthermore, our accretion disk model includes an advanced treatment of spectral hardening. Our data selection relies on a rigorous and quantitative definition of the thermal state of black hole binaries, which we used to screen all of the available RXTE and ASCA data for the thermal state of GRS 1915+105. In addition, we focus on those data for which the accretion disk luminosity is less than 30% of the Eddington luminosity. We argue that these low-luminosity data are most appropriate for the thin alpha-disk model that we employ. We assume that there is zero torque at the inner edge of the disk, as is likely when the disk is thin, although we show that the presence of a significant torque does not affect our results. Our model and the model of the relativistic jets observed for this source constrain the distance and black hole mass and could thus be tested by determining a VLBA parallax distance and improving the measurement of the mass function. Finally, we comment on the significance of our results for relativistic jet and core-collapse models and for the detection of gravitational waves.
dc.language.isoen_US
dc.publisherAmerican Astronomical Society
dash.licenseLAA
dc.titleThe Spin of the Near‐Extreme Kerr Black Hole GRS 1915+105
dc.typeJournal Article
dc.description.versionAccepted Manuscript
dc.relation.journalThe Astrophysical Journal
dash.depositing.authorNarayan, Ramesh::dc7afe5d74d62c7b451015317ea2ccbe::600
dc.date.available2019-09-22T14:23:44Z
dash.workflow.comments1Science Serial ID 97431
dc.identifier.doi10.1086/508457
dash.source.volume652;1
dash.source.page518-539


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record