Temporal Evolution of X-ray Lags in Cygnus X-1

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dc.creatorPottschmidt, K.
dc.creatorWilms, J.
dc.creatorNowak, M. A.
dc.creatorHeindl, W. A.
dc.creatorSmith, D. M.
dc.creatorStaubert, R.
dc.date2000-04-03
dc.date.accessioned2026-07-07T01:53:00Z
dc.date.available2026-07-07T01:53:00Z
dc.descriptionWe present the long term evolution of the frequency-dependent X-ray time lags of the black hole candidate Cygnus X-1 as measured in 1996 and 1998 with the Rossi X-ray Timing Explorer (RXTE). Lag spectra measured during the 1996 June soft state are very similar to those seen during 1996 December and most of 1998 while Cyg~X-1 was in its hard state. During state transitions, however, the shape and magnitude of the X-ray lag is highly variable and tends to be much larger than outside of the state transitions. This behavior is most obvious in the 1--10 Hz band. The increase of the X-ray lag during the state transitions might be related to the formation and destruction of the synchrotron radiation emitting outflows present during the hard state.
dc.description4 pages, 4 figures, A&A Let., in press
dc.identifierhttps://arxiv.org/abs/astro-ph/0004018
dc.identifierhttp://arxiv.org/abs/astro-ph/0004018
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/813
dc.subjectAstrophysics
dc.titleTemporal Evolution of X-ray Lags in Cygnus X-1
dc.typetext

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