Timing an Accreting Millisecond Pulsar: Measuring the Accretion Torque in IGR J00291+5934

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dc.creatorBurderi, L.
dc.creatorDi Salvo, T.
dc.creatorRiggio, A.
dc.creatorMenna, M. T.
dc.creatorLavagetto, G.
dc.creatorPapitto, A.
dc.creatorIaria, R.
dc.creatorRobba, N. R.
dc.creatorStella, L.
dc.date2005-09-08
dc.date.accessioned2026-07-07T10:27:39Z
dc.date.available2026-07-07T10:27:39Z
dc.descriptionWe present here a timing analysis of the fastest accreting millisecond pulsar IGR J00291+5934 using RXTE data taken during the outburst of December 2004. We corrected the arrival times of all the events for the orbital (Doppler) effects and performed a timing analysis of the resulting phase delays. In this way we find a clear parabolic trend of the pulse phase delays showing that the pulsar is spinning up as a consequence of accretion torques during the X-ray outburst. The accretion torque gives us for the first time an independent estimate of the mass accretion rate onto the neutron star, which can be compared with the observed X-ray luminosity. We also report a revised value of the spin period of the pulsar.
dc.descriptionProceedings of the Frascati Workshop 2005: Multifrequency Behaviour of High Energy Cosmic Sources, Vulcano, May 23-28. 7 pages including 1 figure
dc.identifierhttps://arxiv.org/abs/astro-ph/0509224
dc.identifierhttp://arxiv.org/abs/astro-ph/0509224
dc.identifierAstrophys.J.657:961-966,2007
dc.identifierdoi:10.1086/510659
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/177208
dc.subjectAstrophysics
dc.titleTiming an Accreting Millisecond Pulsar: Measuring the Accretion Torque in IGR J00291+5934
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