CaltechAUTHORS
  A Caltech Library Service

Confirmation of a High Magnetic Field in GRO J1008-57

Bellm, Eric C. and Fürst, Felix and Pottschmidt, Katja and Tomsick, John A. and Boggs, Steven E. and Chakrabarty, Deepto and Christensen, Finn E. and Craig, William W. and Hailey, Charles J. and Harrison, Fiona A. and Stern, Daniel and Walton, Dominic J. and Wilms, Jörn and Zhang, William W. (2014) Confirmation of a High Magnetic Field in GRO J1008-57. Astrophysical Journal, 792 (2). Art. No. 108. ISSN 0004-637X. http://resolver.caltech.edu/CaltechAUTHORS:20140925-112538542

[img]
Preview
PDF - Published Version
See Usage Policy.

598Kb
[img]
Preview
PDF - Submitted Version
See Usage Policy.

682Kb

Use this Persistent URL to link to this item: http://resolver.caltech.edu/CaltechAUTHORS:20140925-112538542

Abstract

GRO J1008–57 is a high-mass X-ray binary for which several claims of a cyclotron resonance scattering feature near 80 keV have been reported. We use NuSTAR, Suzaku, and Swift data from its giant outburst of 2012 November to confirm the existence of the 80 keV feature and perform the most sensitive search to date for cyclotron scattering features at lower energies. We find evidence for a 78^(+3)_(-2) keV line in the NuSTAR and Suzaku data at >4σ significance, confirming the detection using Suzaku alone by Yamamoto et al. A search of both the phase-averaged and phase-resolved data rules out a fundamental at lower energies with optical depth larger than 5% of the 78 keV line. These results indicate that GRO J1008–57 has a magnetic field of 6.7 × 10^(12)(1 + z) G, the highest among known accreting pulsars.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://arxiv.org/abs/1403.5249arXivDiscussion Paper
http://iopscience.iop.org/0004-637X/792/2/108PublisherArticle
http://dx.doi.org/10.1088/0004-637X/792/2/108DOIArticle
ORCID:
AuthorORCID
Bellm, Eric C.0000-0001-8018-5348
Boggs, Steven E.0000-0001-9567-4224
Harrison, Fiona A.0000-0003-2992-8024
Stern, Daniel0000-0003-2686-9241
Additional Information:© 2014 American Astronomical Society. Received 2014 March 20; accepted 2014 July 24; published 2014 August 21. This work was supported under NASA contract No. NNG08FD60C and uses data from the NuSTAR mission, a project led by the California Institute of Technology, managed by the Jet Propulsion Laboratory, and funded by the National Aeronautics and Space Administration. We thank the NuSTAR Operations team for executing the ToO observation and the Software and Calibration teams for analysis support. This research has used the NuSTAR Data Analysis Software (NuSTARDAS) jointly developed by the ASI Science Data Center (ASDC, Italy) and the California Institute of Technology (USA). J.W. acknowledges partial support from Deutsches Zentrum für Luftund Raumfahrt grant 50 OR 1113. Facilities: NuSTAR, Swift, Suzaku
Group:NuSTAR
Funders:
Funding AgencyGrant Number
NASANNG08FD60C
Deutsches Zentrum für Luftund Raumfahrt (DLR)50 OR 1113
Subject Keywords:pulsars: individual (GRO J1008–57); stars: neutron; X-rays: binaries
Other Numbering System:
Other Numbering System NameOther Numbering System ID
Space Radiation Laboratory2014-36
Record Number:CaltechAUTHORS:20140925-112538542
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20140925-112538542
Official Citation:Confirmation of a High Magnetic Field in GRO J1008–57 Eric C. Bellm et al. 2014 ApJ 792 108
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:50031
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:25 Sep 2014 20:16
Last Modified:28 Oct 2017 03:03

Repository Staff Only: item control page