Rapid X-ray variability of the superluminal source GRS1915+105
| dc.creator | Paul, B. | |
| dc.creator | Agrawal, P. C. | |
| dc.creator | Rao, A. R. | |
| dc.date | 1997-02-13 | |
| dc.date.accessioned | 2026-07-07T06:27:55Z | |
| dc.date.available | 2026-07-07T06:27:55Z | |
| dc.description | The superluminal X-ray transient source GRS 1915+105 was observed during July 20-29, 1996 with the Indian X-ray Astronomy Experiment (IXAE) on the Indian satellite IRS-P3 launched on March 21, 1996 from Shriharikota Range in India. During our observations covering the energy band 2-18 keV, we have seen strong erratic intensity variations on time scale of 0.1s - 10s. Quasi Periodic Oscillations (QPOs) in a frequency range of 0.62 to 0.82 Hz were detected with a rms fraction of about 9%. The rapid X-ray intensity variations in GRS1915+105 are similar to those observed in some other black hole binaries and thus provide further support for the hypothesis that this source is likely to be a black hole. We discuss the possible emission region and mechanism of the observed quasi-periodic oscillations. Comparing the observed QPOs with the ones observed in other neutron star and black-hole systems, we argue that GRS1915+105 is possibly a black-hole. | |
| dc.description | 4 pages, to appear in A&A Letters | |
| dc.identifier | https://arxiv.org/abs/astro-ph/9702114 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/9702114 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/97557 | |
| dc.subject | Astrophysics | |
| dc.title | Rapid X-ray variability of the superluminal source GRS1915+105 | |
| dc.type | text |