Rapid variability of the kHz-QPO frequency in 4U1608-52

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dc.creatorPaltani, S.
dc.creatorBarret, D.
dc.creatorOlive, J. F.
dc.creatorSkinner, G. K.
dc.date2004-12-16
dc.date.accessioned2026-07-07T02:16:19Z
dc.date.available2026-07-07T02:16:19Z
dc.descriptionWe investigate the variability of the QPO frequency in 4U1608-52 on very short time scales of a few seconds. We detect changes in frequency as fast as 0.5 Hz/s, which is more than ten times the fastest change reported for this object. Using a structure function analysis, we are able to detect variability on time scales as short as ~4 seconds. We do not detect any time asymmetry in the QPO-frequency history. These results have important consequences on the measurement of the QPO coherence.
dc.descriptionProceedings of the Annual meeting of the French Astronomical Society (SF2A), in press, 4 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/astro-ph/0412421
dc.identifierhttp://arxiv.org/abs/astro-ph/0412421
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/8742
dc.subjectAstrophysics
dc.titleRapid variability of the kHz-QPO frequency in 4U1608-52
dc.typetext

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