Low frequency quasi-periodic oscillations in the hard X-ray emission from Cygnus X-1
| dc.contributor.author | Paul, Biswajit | |
| dc.contributor.author | Agrawal, P C | |
| dc.contributor.author | Rao, A R | |
| dc.date.accessioned | 2012-07-13T06:24:03Z | |
| dc.date.available | 2012-07-13T06:24:03Z | |
| dc.date.issued | 1998-12 | |
| dc.description | Restricted Access | en |
| dc.description.abstract | The observations of the black hole binary Cygnus X-1 were made in the energy band of 20 - 100 keV with a balloon-borne Xenon-filled multiwire proportional counter telescope on 5th April 1992. Timing analysis of the data revealed the presence of quasi-periodic oscillations (QPO) in the hard X-ray emission from the source. The QPO feature in the power density spectrum is broad with a peak at a frequency of 0.06 Hz. This result is compared with similar reports of QPOs in Cyg X-1 in soft and hard X-rays. Short time scale random intensity variations in the X-ray light curve are described with a shot noiuse model. | en |
| dc.identifier.citation | Journal of Astrophysics and Astronomy, 1998, Vol. 19, p55-61 | en |
| dc.identifier.issn | 0250-6335 | |
| dc.identifier.issn | 0973-7758 (Online) | |
| dc.identifier.uri | http://hdl.handle.net/2289/4881 | |
| dc.language.iso | en | en |
| dc.publisher | Indian Academy of Sciences, Bangalore, India | en |
| dc.relation.uri | http://adsabs.harvard.edu/abs/1998JApA...19...55P | en |
| dc.relation.uri | http://dx.doi.org/10.1007/BF02714891 | en |
| dc.rights | 1998 Indian Academy of Sciences, Bangalore, India | en |
| dc.title | Low frequency quasi-periodic oscillations in the hard X-ray emission from Cygnus X-1 | en |
| dc.type | Article | en |