Correlation between X-ray Lightcurve Shape and Radio Arrival Time in the Vela Pulsar

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dc.creatorLommen, A.
dc.creatorDonovan, J.
dc.creatorGwinn, C.
dc.creatorArzoumanian, Z.
dc.creatorHarding, A.
dc.creatorStrickman, M.
dc.creatorDodson, R.
dc.creatorMcCulloch, P.
dc.creatorMoffett, D.
dc.date2006-11-14
dc.date.accessioned2026-07-07T10:20:50Z
dc.date.available2026-07-07T10:20:50Z
dc.descriptionWe report the results of simultaneous observations of the Vela pulsar in X-rays and radio from the RXTE satellite and the Mount Pleasant Radio Observatory in Tasmania. We sought correlations between the Vela's X-ray emission and radio arrival times on a pulse by pulse basis. At a confidence level of 99.8% we have found significantly higher flux density in Vela's main X-ray peak during radio pulses that arrived early. This excess flux shifts to the 'trough' following the 2nd X-ray peak during radio pulses that arrive later. Our results suggest that the mechanism producing the radio pulses is intimately connected to the mechanism producing X-rays. Current models using resonant absorption of radio emission in the outer magnetosphere as a cause of the X-ray emission are explored as a possible explanation for the correlation.
dc.description6 pages, 5 figures, accepted by ApJ
dc.identifierhttps://arxiv.org/abs/astro-ph/0611450
dc.identifierhttp://arxiv.org/abs/astro-ph/0611450
dc.identifierAstrophys.J.657:436-440,2007
dc.identifierdoi:10.1086/510797
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/174978
dc.subjectAstrophysics
dc.titleCorrelation between X-ray Lightcurve Shape and Radio Arrival Time in the Vela Pulsar
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