Low frequency quasi-periodic oscillations in the hard X-ray emission from Cygnus X-1

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DC Field	Value	Language
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.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.description	Open 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.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
Appears in Collections:	Research Papers (A&A)

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