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dc.contributor.authorIgnace, R.
dc.contributor.authorGayley, K. G.
dc.contributor.authorHamann, W.-R.
dc.contributor.authorHuenemoerder, David P.
dc.contributor.authorOskinova, Lidia M.
dc.contributor.authorPollock, A. M. T.
dc.contributor.authorMcFall, M.
dc.date.accessioned2015-02-04T18:54:04Z
dc.date.available2015-02-04T18:54:04Z
dc.date.issued2013-09
dc.date.submitted2013-06
dc.identifier.issn0004-637X
dc.identifier.issn1538-4357
dc.identifier.urihttp://hdl.handle.net/1721.1/93755
dc.description.abstractWe obtained four pointings of over 100 ks each of the well-studied Wolf-Rayet star WR 6 with the XMM-Newton satellite. With a first paper emphasizing the results of spectral analysis, this follow-up highlights the X-ray variability clearly detected in all four pointings. However, phased light curves fail to confirm obvious cyclic behavior on the well-established 3.766 day period widely found at longer wavelengths. The data are of such quality that we were able to conduct a search for event clustering in the arrival times of X-ray photons. However, we fail to detect any such clustering. One possibility is that X-rays are generated in a stationary shock structure. In this context we favor a corotating interaction region (CIR) and present a phenomenological model for X-rays from a CIR structure. We show that a CIR has the potential to account simultaneously for the X-ray variability and constraints provided by the spectral analysis. Ultimately, the viability of the CIR model will require both intermittent long-term X-ray monitoring of WR 6 and better physical models of CIR X-ray production at large radii in stellar winds.en_US
dc.description.sponsorshipUnited States. National Aeronautics and Space Administration (Smithsonian Astrophysical Observatory contract SV3-73016, Chandra X-Ray Center and Science Instruments)en_US
dc.description.sponsorshipGerman Aerospace Center (DLR) (grant 50 OR 1302)en_US
dc.language.isoen_US
dc.publisherInstitute of Physics/American Astronomical Societyen_US
dc.relation.isversionofhttp://dx.doi.org/10.1088/0004-637X/775/1/29en_US
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.en_US
dc.sourceAmerican Astronomical Societyen_US
dc.titleTHE XMM-NEWTON /EPIC X-RAY LIGHT CURVE ANALYSIS OF WR 6en_US
dc.typeArticleen_US
dc.identifier.citationIgnace, R., K. G. Gayley, W.-R. Hamann, D. P. Huenemoerder, L. M. Oskinova, A. M. T. Pollock, and M. McFall. “ THE XMM-NEWTON /EPIC X-RAY LIGHT CURVE ANALYSIS OF WR 6 .” The Astrophysical Journal 775, no. 1 (August 30, 2013): 29. © 2013 American Astronomical Society.en_US
dc.contributor.departmentMIT Kavli Institute for Astrophysics and Space Researchen_US
dc.contributor.mitauthorHuenemoerder, David P.en_US
dc.relation.journalAstrophysical Journalen_US
dc.eprint.versionFinal published versionen_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US
eprint.statushttp://purl.org/eprint/status/PeerRevieweden_US
dspace.orderedauthorsIgnace, R.; Gayley, K. G.; Hamann, W.-R.; Huenemoerder, D. P.; Oskinova, L. M.; Pollock, A. M. T.; McFall, M.en_US
mit.licensePUBLISHER_POLICYen_US
mit.metadata.statusComplete


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