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Multi-wavelength observations of the binary system PSR B1259−63/LS 2883 around the 2014 periastron passage

Chernyakova, M. and Neronov, A. and van Soelen, B. and Callanan, P. and O'Shaughnessy, L. and Babyk, L. and Tsygankov, S. and Vovk, L. and Krivonos, R. and Tomsick, J. A. and Malyshev, D. and Li, J. and Wood, K. and Torres, D. and Zhang, S. and Kretschmar, P. and McSwain, M.V. and Buckley, D. A. H. and Koen, C. (2015) Multi-wavelength observations of the binary system PSR B1259−63/LS 2883 around the 2014 periastron passage. Monthly Notices of the Royal Astronomical Society, 454 (2). pp. 1358-1370. ISSN 0035-8711. doi:10.1093/mnras/stv1988.

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We report on the results of the extensive multi-wavelength campaign from optical to GeV γ-rays of the 2014 periastron passage of PSR B1259−63, which is a unique high-mass γ-ray emitting binary system with a young pulsar companion. Observations demonstrate the stable nature of the post-periastron GeV flare and prove the coincidence of the flare with the start of rapid decay of the Hα equivalent width, usually interpreted as a disruption of the Be stellar disc. Intensive X-ray observations reveal changes in the X-ray spectral behaviour happening at the moment of the GeV flare. We demonstrate that these changes can be naturally explained as a result of synchrotron cooling of monoenergetic relativistic electrons injected into the system during the GeV flare.

Item Type:Article
Related URLs:
URLURL TypeDescription
Chernyakova, M.0000-0002-9735-3608
van Soelen, B.0000-0003-1873-7855
Tsygankov, S.0000-0002-9679-0793
Krivonos, R.0000-0003-2737-5673
Tomsick, J. A.0000-0001-5506-9855
Wood, K.0000-0002-7376-3151
Torres, D.0000-0002-1522-9065
Kretschmar, P.0000-0001-9840-2048
McSwain, M.V.0000-0002-4775-2803
Buckley, D. A. H.0000-0002-7004-9956
Additional Information:© 2015 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society. Accepted 2015 August 21. Received 2015 August 21. In original form 2015 July 17. First published online October 1, 2015. This work was partially supported by the EU COST Action MP1304 ‘NewCompStar’. The authors thank the International Space Science Institute (ISSI, Bern) for support within the ISSI team ‘Study of Gamma-ray Loud Binary Systems’ and SFI/HEA Irish Centre for High-End Computing (ICHEC) for the provision of computational facilities and support. SZh acknowledges support from the Chinese NSFC 11473027, 11133002, XTP project XDA 04060604; Strategic Priority Research Program ‘The Emergence of Cosmological Structures’ of the Chinese Academy of Sciences, Grant No. XDB09000000 and Strategic Priority Research Program on Space Science, Chinese Academy of Sciences, Grant No.XDA04010300. ST thanks Russian Scientific Foundation for the support (grant 14-12-01287). MVM is grateful for support from the National Science Foundation through the grant AST-1109247. Some of the observations reported in this paper were obtained with the SALT. Authors acknowledge the allocation of telescope time by the South African Astronomical Observatory. CK acknowledges funding from the South African Research Foundation. The work of IuB was partially supported by the Stipendium of the President of Ukraine (2014-2016). JL and DFT acknowledge support from the grants AYA2012-39303, SGR 2014-1073 and support from the National Natural Science Foundation of China via NSFC-11473027. JL acknowledges support by the Faculty of the European Space Astronomy Centre. DFT acknowledges the Chinese Academy of Sciences visiting professorship programme 2013T2J0007.
Funding AgencyGrant Number
National Natural Science Foundation of China11473027
National Natural Science Foundation of China11133002
XTP project XDA04060604
Chinese Academy of SciencesXDB09000000
Chinese Academy of SciencesXDA04010300
Russian Scientific Foundation14- 12-01287
National Research Foundation (South Africa)UNSPECIFIED
Stipendium of the President of UkraineUNSPECIFIED
Ministerio de Economía y Competitividad (MINECO)AYA2012-39303
National Natural Science Foundation of China11473027
European Space Astronomy CentreUNSPECIFIED
Chinese Academy of Sciences2013T2J0007
Issue or Number:2
Record Number:CaltechAUTHORS:20160201-111521546
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:64126
Deposited By: Joy Painter
Deposited On:01 Feb 2016 19:57
Last Modified:02 Mar 2023 19:38

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