Abstract
© 2015 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society. 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.
Original language | English |
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Pages (from-to) | 1358-1370 |
Journal | Monthly Notices of the Royal Astronomical Society |
Volume | 454 |
Issue number | 2 |
DOIs | |
Publication status | Published - 1 Jan 2015 |
Keywords
- Gamma rays: stars
- Pulsars: individual: PSR B1259-63
- Stars: emission-line, Be
- X-rays: binaries
- X-rays: individual: PSR B1259-63