NuSTAR detection of a cyclotron line in the supergiant fast X-ray transient IGR J17544-2619
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 com...
| Main Authors: | , , , , , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | en_US |
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Oxford University Press
2015
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| Online Access: | http://hdl.handle.net/1721.1/98041 https://orcid.org/0000-0001-8804-8946 |
| _version_ | 1826212286331617280 |
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| author | Bhalerao, Varun Romano, Patrizia Tomsick, John Natalucci, Lorenzo Smith, David M. Bellm, Eric Boggs, Steven E. Chakrabarty, Deepto Christensen, Finn E. Craig, William W. Fuerst, Felix Hailey, Charles J. Harrison, Fiona A. Krivonos, Roman A. Lu, Ting-Ni Madsen, Kristin K. Stern, Daniel Younes, George Zhang, William |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Bhalerao, Varun Romano, Patrizia Tomsick, John Natalucci, Lorenzo Smith, David M. Bellm, Eric Boggs, Steven E. Chakrabarty, Deepto Christensen, Finn E. Craig, William W. Fuerst, Felix Hailey, Charles J. Harrison, Fiona A. Krivonos, Roman A. Lu, Ting-Ni Madsen, Kristin K. Stern, Daniel Younes, George Zhang, William |
| author_sort | Bhalerao, Varun |
| collection | MIT |
| description | 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. |
| first_indexed | 2024-09-23T15:19:19Z |
| format | Article |
| id | mit-1721.1/98041 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T15:19:19Z |
| publishDate | 2015 |
| publisher | Oxford University Press |
| record_format | dspace |
| spelling | mit-1721.1/980412022-09-29T14:10:56Z NuSTAR detection of a cyclotron line in the supergiant fast X-ray transient IGR J17544-2619 Bhalerao, Varun Romano, Patrizia Tomsick, John Natalucci, Lorenzo Smith, David M. Bellm, Eric Boggs, Steven E. Chakrabarty, Deepto Christensen, Finn E. Craig, William W. Fuerst, Felix Hailey, Charles J. Harrison, Fiona A. Krivonos, Roman A. Lu, Ting-Ni Madsen, Kristin K. Stern, Daniel Younes, George Zhang, William Massachusetts Institute of Technology. Department of Physics Chakrabarty, Deepto 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. United States. National Aeronautics and Space Administration (Contract NNG08FD60C) 2015-08-06T12:07:14Z 2015-08-06T12:07:14Z 2015-01 2014-06 Article http://purl.org/eprint/type/JournalArticle 0035-8711 1365-2966 http://hdl.handle.net/1721.1/98041 Bhalerao, 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. https://orcid.org/0000-0001-8804-8946 en_US http://dx.doi.org/10.1093/mnras/stu2495 Monthly Notices of the Royal Astronomical Society Creative Commons Attribution-Noncommercial-Share Alike http://creativecommons.org/licenses/by-nc-sa/4.0/ application/pdf Oxford University Press arXiv |
| spellingShingle | Bhalerao, Varun Romano, Patrizia Tomsick, John Natalucci, Lorenzo Smith, David M. Bellm, Eric Boggs, Steven E. Chakrabarty, Deepto Christensen, Finn E. Craig, William W. Fuerst, Felix Hailey, Charles J. Harrison, Fiona A. Krivonos, Roman A. Lu, Ting-Ni Madsen, Kristin K. Stern, Daniel Younes, George Zhang, William NuSTAR detection of a cyclotron line in the supergiant fast X-ray transient IGR J17544-2619 |
| title | NuSTAR detection of a cyclotron line in the supergiant fast X-ray transient IGR J17544-2619 |
| title_full | NuSTAR detection of a cyclotron line in the supergiant fast X-ray transient IGR J17544-2619 |
| title_fullStr | NuSTAR detection of a cyclotron line in the supergiant fast X-ray transient IGR J17544-2619 |
| title_full_unstemmed | NuSTAR detection of a cyclotron line in the supergiant fast X-ray transient IGR J17544-2619 |
| title_short | NuSTAR detection of a cyclotron line in the supergiant fast X-ray transient IGR J17544-2619 |
| title_sort | nustar detection of a cyclotron line in the supergiant fast x ray transient igr j17544 2619 |
| url | http://hdl.handle.net/1721.1/98041 https://orcid.org/0000-0001-8804-8946 |
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