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INTEGRAL-RXTE observations of Cygnus X-1

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INTEGRAL-RXTE observations of Cygnus X-1

dc.contributor.author	Pottschmidt, K.
dc.contributor.author	Wilms, J.
dc.contributor.author	Chernyakova, M.
dc.contributor.author	Nowak, M.A.
dc.contributor.author	Rodriguez, J.
dc.contributor.author	Zdziarski, A.A.
dc.contributor.author	Beckmann, V.
dc.contributor.author	Kretschmar, P.
dc.contributor.author	Gleissner, T.
dc.contributor.author	Pooley, G.G.
dc.contributor.author	Martinez Nuñez, Silvia
dc.contributor.author	Courvoisier, T.J.L.
dc.contributor.author	Schönfelder, V.
dc.contributor.author	Staubert, R.
dc.date.accessioned	2010-06-29T10:57:00Z
dc.date.available	2010-06-29T10:57:00Z
dc.date.issued	2003
dc.identifier.citation	POTTSCHMIDT, K. ; Wilms, J. ; Chernyakova, M. ; Nowak, M.A. ; Rodriguez, J. ; Zdziarski, A.A. ; Beckmann, V. ; Kretschmar, P. ; Gleissner, T. ; Pooley, G.G. ; Martinez Nuñez, Silvia ; Courvoisier, T.J.L. ; Schönfelder, V. ; Staubert, R., 2003, INTEGRAL-RXTE observations of Cygnus X-1, Astronomy and Astrophysics, vol. 411, no. 1, p. L383–L388	en
dc.identifier.uri	http://hdl.handle.net/10550/14005
dc.description.abstract	We present first results from contemporaneous observations of Cygnus X-1 with INTEGRAL and RXTE,made during INTEGRAL’s performance verification phase in 2002 November and December. Consistent with earlier results, the 3−250 keV data are well described by Comptonization spectra from a Compton corona with a temperature of kT ∼ 50−90 keV and an optical depth of τ ∼ 1.0−1.3 plus reflection from a cold or mildly ionized slab with a covering factor of Ω/2π ∼ 0.2−0.3. A soft excess below 10 keV, interpreted as emission from the accretion disk, is seen to decrease during the 1.5 months spanned by our observations. Our results indicate a remarkable consistency among the independently calibrated detectors, with the remaining issues being mainly related to the flux calibration of INTEGRAL.	en
dc.language.iso	en	en
dc.subject	Black hole physics ; Individual stars ; Cyg X-1 ; Gamma rays ; X-rays observations ; Binaries	en
dc.title	INTEGRAL-RXTE observations of Cygnus X-1	en
dc.type	journal article	es_ES
dc.subject.unesco	UNESCO::ASTRONOMÍA Y ASTROFÍSICA	en
dc.subject.unesco	UNESCO::ASTRONOMÍA Y ASTROFÍSICA::Cosmología y cosmogonia	en
dc.identifier.doi	10.1051/0004-6361:20031258	en
dc.identifier.idgrec	030221	en
dc.type.hasVersion	VoR	es_ES
dc.identifier.url	http://www.aanda.org/articles/aa/pdf/2003/43/aaINTEGRAL26.pdf	en