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Multiwavelength observations of the binary system PSR B1259-63/LS 2883 around the 2010-2011 periastron passage [electronic resource].

Published
Washington, D.C. : United States. Dept. of Energy, 2014.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy
Physical Description
pages 432-445 : digital, PDF file
Additional Creators
SLAC National Accelerator Laboratory, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
Here, we report on broad multiwavelength observations of the 2010–2011 periastron passage of the γ-ray loud binary system PSR B1259-63. High-resolution interferometric radio observations establish extended radio emission trailing the position of the pulsar. Observations with the FermiGamma-ray Space Telescope reveal GeV γ-ray flaring activity of the system, reaching the spin-down luminosity of the pulsar, around 30 d after periastron. Furthermore, there are no clear signatures of variability at radio, X-ray and TeV energies at the time of the GeV flare. Variability around periastron in the Hα emission line, can be interpreted as the gravitational interaction between the pulsar and the circumstellar disc. The equivalent width of the Hα grows from a few days before periastron until a few days later, and decreases again between 18 and 46 d after periastron. In near-infrared we observe the similar decrease of the equivalent width of Brγ line between the 40th and 117th day after the periastron. For the idealized disc, the variability of the Hα line represents the variability of the mass and size of the disc. Finally, we discuss possible physical relations between the state of the disc and GeV emission under assumption that GeV flare is directly related to the decrease of the disc size.
Report Numbers
E 1.99:1356532
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Note
Published through SciTech Connect.
01/30/2014.
Monthly Notices of the Royal Astronomical Society 439 1 ISSN 0035-8711 AM
M. Chernyakova; A. A. Abdo; A. Neronov; M. V. McSwain; J. Moldon; M. Ribo; J. M. Paredes; I. Sushch; M. de Naurois; U. Schwanke; Y. Uchiyama; K. Wood; S. Johnston; S. Chaty; A. Coleiro; D. Malyshev; I. Babyk.
Funding Information
AC02-76SF00515
View MARC record | catkey: 23496520