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02145 am a22003973u 4500 |
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|a Bhalerao, Varun
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|a Massachusetts Institute of Technology. Department of Physics
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|a Chakrabarty, Deepto
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|a Romano, Patrizia
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|a Tomsick, John
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|a Natalucci, Lorenzo
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|a Smith, David M.
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|a Bellm, Eric
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|a Boggs, Steven E.
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|a Chakrabarty, Deepto
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|a Christensen, Finn E.
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|a Craig, William W.
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|a Fuerst, Felix
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|a Hailey, Charles J.
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|a Harrison, Fiona A.
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|a Krivonos, Roman A.
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|a Lu, Ting-Ni
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|a Madsen, Kristin K.
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|a Stern, Daniel
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|a Younes, George
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|a Zhang, William
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|a NuSTAR detection of a cyclotron line in the supergiant fast X-ray transient IGR J17544-2619
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|b Oxford University Press,
|c 2015-08-06T12:07:14Z.
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|z Get fulltext
|u http://hdl.handle.net/1721.1/98041
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|a We 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.
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|a United States. National Aeronautics and Space Administration (Contract NNG08FD60C)
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|a en_US
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|a Article
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|t Monthly Notices of the Royal Astronomical Society
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