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A NuSTAR Observation of the Gamma-ray Emitting Millisecond Pulsar PSR J1723-2837

Kong, A. K. H. and Hui, C. Y. and Takata, J. and Li, K. L. and Tam, P. H. T. (2017) A NuSTAR Observation of the Gamma-ray Emitting Millisecond Pulsar PSR J1723-2837. Astrophysical Journal, 839 (2). Art. No. 130. ISSN 1538-4357. https://resolver.caltech.edu/CaltechAUTHORS:20170331-101324182

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Abstract

We report on the first NuSTAR observation of the gamma-ray emitting millisecond pulsar binary PSR J1723–2837. X-ray radiation up to 79 keV is clearly detected, and the simultaneous NuSTAR and Swift spectrum is well described by an absorbed power law with a photon index of ~1.3. We also find X-ray modulations in the 3–10, 10–20, 20–79, and 3–79 keV bands at the 14.8 hr binary orbital period. All of these are entirely consistent with previous X-ray observations below 10 keV. This new hard X-ray observation of PSR J1723–2837 provides strong evidence that the X-rays are from the intrabinary shock via an interaction between the pulsar wind and the outflow from the companion star. We discuss how the NuSTAR observation constrains the physical parameters of the intrabinary shock model.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.3847/1538-4357/aa6aa2DOIArticle
http://iopscience.iop.org/article/10.3847/1538-4357/aa6aa2/metaPublisherArticle
http://arxiv.org/abs/1703.10164arXivDiscussion Paper
ORCID:
AuthorORCID
Kong, A. K. H.0000-0002-5105-344X
Hui, C. Y.0000-0003-1753-1660
Takata, J.0000-0002-8731-0129
Li, K. L.0000-0001-8229-2024
Tam, P. H. T.0000-0002-1262-7375
Additional Information:© 2017 The American Astronomical Society. Received 2017 February 8; revised 2017 March 26; accepted 2017 March 29; published 2017 April 25. A.K.H.K. is supported by the Ministry of Science and Technology of the Republic of China (Taiwan) through grants 105-2112-M-007-033-MY2, 105-2119-M-007-028-MY3, and 106-2918-I-007-005. C.Y.H. is supported by the National Research Foundation of Korea through grants 2014R1A1A2058590 and 2016R1A5A1013277. J.T. is supported by NSFC grants of Chinese Government under 11573010 and U1631103. Facilities: NuSTAR, Swift.
Group:NuSTAR
Subject Keywords:binaries: close – pulsars: individual (PSR J1723–2837) – X-rays: binaries
Issue or Number:2
Record Number:CaltechAUTHORS:20170331-101324182
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20170331-101324182
Official Citation:A. K. H. Kong et al 2017 ApJ 839 130
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:75575
Collection:CaltechAUTHORS
Deposited By: Joy Painter
Deposited On:31 Mar 2017 17:24
Last Modified:03 Oct 2019 16:52

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