Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/4933
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dc.contributor.authorRao, A.R.-
dc.contributor.authorPaul, Biswajit-
dc.contributor.authorYadav, J.S.-
dc.contributor.authorVadawale, S.V.-
dc.date.accessioned2012-07-14T10:21:18Z-
dc.date.available2012-07-14T10:21:18Z-
dc.date.issued2001-01-
dc.identifier.citationAdvances in Space Research, 2001, Vol. 28, p343-347en
dc.identifier.issn0273-1177-
dc.identifier.urihttp://hdl.handle.net/2289/4933-
dc.descriptionRestricted Accessen
dc.description.abstractWe have analyzed X-ray data obtained from the RXTE archives pertaining to the low-hard and high-soft spectral states of GRS 1915+105, to establish the spectral and temporal characteristics during these states. In the high-soft state, the X-ray spectrum is described by the standard model for Galactic black hole candidate sources consisting of a multicolor disk-blackbody and a power-law, whereas the Power Density Spectrum (PDS) is steep without any evidence of QPO. In the low-hard state, the PDS is flat and dominated by a QPO at 0.5-10 Hz. However the X-ray spectrum in the low-hard state requires a different model consisting of a multi-color disk-blackbody and a comptonization due to hot plasma. Also, in the presence of steady radio emission during such state, an additional power-law component is required to describe the spectrum. We attempt to resolve the X-ray light-curves of the individual spectral components and find that the QPO is present only in the Comptonized component.en
dc.language.isoenen
dc.publisherElsevier B.V.en
dc.relation.urihttp://adsabs.harvard.edu/abs/2001AdSpR..28..343Ren
dc.relation.urihttp://dx.doi.org/10.1016/S0273-1177(01)00431-8en
dc.rights2001 Elsevier B.V.en
dc.titleX-ray emission characteristics of GRS 1915+105 during the two spectral statesen
dc.typeArticleen
Appears in Collections:Research Papers (A&A)

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