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NuSTAR detection of a cyclotron line in the supergiant fast X-ray transient IGR J17544-2619

dc.contributor.authorBhalerao, Varun
dc.contributor.authorRomano, Patrizia
dc.contributor.authorTomsick, John
dc.contributor.authorNatalucci, Lorenzo
dc.contributor.authorSmith, David M.
dc.contributor.authorBellm, Eric
dc.contributor.authorBoggs, Steven E.
dc.contributor.authorChakrabarty, Deepto
dc.contributor.authorChristensen, Finn E.
dc.contributor.authorCraig, William W.
dc.contributor.authorFuerst, Felix
dc.contributor.authorHailey, Charles J.
dc.contributor.authorHarrison, Fiona A.
dc.contributor.authorKrivonos, Roman A.
dc.contributor.authorLu, Ting-Ni
dc.contributor.authorMadsen, Kristin K.
dc.contributor.authorStern, Daniel
dc.contributor.authorYounes, George
dc.contributor.authorZhang, William
dc.date.accessioned2015-08-06T12:07:14Z
dc.date.available2015-08-06T12:07:14Z
dc.date.issued2015-01
dc.date.submitted2014-06
dc.identifier.issn0035-8711
dc.identifier.issn1365-2966
dc.identifier.urihttp://hdl.handle.net/1721.1/98041
dc.description.abstractWe present NuSTAR spectral and timing studies of the supergiant fast X-ray transient (SFXT) IGR J17544−2619. The spectrum is well described by an ~1 keV blackbody and a hard continuum component, as expected from an accreting X-ray pulsar. We detect a cyclotron line at 17 keV, confirming that the compact object in IGR J17544−2619 is indeed a neutron star. This is the first measurement of the magnetic field in an SFXT. The inferred magnetic field strength, B = (1.45 ± 0.03) × 10[superscript 12]G (1 + z) is typical of neutron stars in X-ray binaries, and rules out a magnetar nature for the compact object. We do not find any significant pulsations in the source on time-scales of 1–2000 s.en_US
dc.description.sponsorshipUnited States. National Aeronautics and Space Administration (Contract NNG08FD60C)en_US
dc.language.isoen_US
dc.publisherOxford University Pressen_US
dc.relation.isversionofhttp://dx.doi.org/10.1093/mnras/stu2495en_US
dc.rightsCreative Commons Attribution-Noncommercial-Share Alikeen_US
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/4.0/en_US
dc.sourcearXiven_US
dc.titleNuSTAR detection of a cyclotron line in the supergiant fast X-ray transient IGR J17544-2619en_US
dc.typeArticleen_US
dc.identifier.citationBhalerao, V., P. Romano, J. Tomsick, L. Natalucci, D. M. Smith, E. Bellm, S. E. Boggs, et al. “NuSTAR Detection of a Cyclotron Line in the Supergiant Fast X-Ray Transient IGR J17544-2619.” Monthly Notices of the Royal Astronomical Society 447, no. 3 (January 5, 2015): 2274–2281.en_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Physicsen_US
dc.contributor.mitauthorChakrabarty, Deeptoen_US
dc.relation.journalMonthly Notices of the Royal Astronomical Societyen_US
dc.eprint.versionAuthor's final manuscripten_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US
eprint.statushttp://purl.org/eprint/status/PeerRevieweden_US
dspace.orderedauthorsBhalerao, V.; Romano, P.; Tomsick, J.; Natalucci, L.; Smith, D. M.; Bellm, E.; Boggs, S. E.; Chakrabarty, D.; Christensen, F. E.; Craig, W. W.; Fuerst, F.; Hailey, C. J.; Harrison, F. A.; Krivonos, R. A.; Lu, T.-N.; Madsen, K.; Stern, D.; Younes, G.; Zhang, W.en_US
dc.identifier.orcidhttps://orcid.org/0000-0001-8804-8946
mit.licenseOPEN_ACCESS_POLICYen_US
mit.metadata.statusComplete


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