Different Types of X-ray Variability Observed in Micro-Quasar GRS 1915+105 with the IXAE

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dc.creatorNaik, S.
dc.creatorAgrawal, P. C.
dc.creatorPaul, B.
dc.creatorRao, A. R.
dc.creatorYadav, J. S.
dc.creatorSeetha, S.
dc.date2001-04-30
dc.date2001-05-01
dc.date.accessioned2026-07-07T01:58:20Z
dc.date.available2026-07-07T01:58:20Z
dc.descriptionThe galactic micro-quasar source GRS 1915+105 has been observed with the Indian X-ray Astronomy Experiment (IXAE) several times over a period extending from 1996 to 2000. The source has been observed in different luminosity states and exhibits a rich variety of random and regular X-ray variability over a wide range of time scales. It also shows a unique variability characteristic namely the occurrence of quasi-regular X-ray bursts with period ranging from 20 s to about 100 s which have slow rise and fast decay. The X-ray spectrum of these bursts is hardest near the end of decay. In the low-hard state and bright-soft state with rapid variability, the source exhibits quasi-periodic oscillations (QPOs) with variable frequency which is luminosity dependent. Regular X-ray intensity dips have been detected coincident with the occurrence of a giant radio outburst. The source made a transition from a low-state to a high-state in 1999 in less than a day and from a soft-bright state to a hard-low state in 2000 in less than 100 minutes during the IXAE observations. Details of these and other variability characteristics of the source are presented in this paper.
dc.description6 pages, 6 figure, replaced with correct figures
dc.identifierhttps://arxiv.org/abs/astro-ph/0104481
dc.identifierhttp://arxiv.org/abs/astro-ph/0104481
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/2726
dc.subjectAstrophysics
dc.titleDifferent Types of X-ray Variability Observed in Micro-Quasar GRS 1915+105 with the IXAE
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