2015/08/06 by M. Chernyakova, A. Neronov, B. van Soelen +16 · 1 citation
Physics and Astronomy · #astro-ph.HE
paper · pdf · doi:10.1093/mnras/stv1988
13 pages, submitted to MNRAS
arxiv created 2015/08/06 · arxiv updated 2015/10/14
We report on the results of the extensive multi-wavelength campaign from optical to GeV gamma-rays of the 2014 periastron passage of PSR B1259-63, which is a unique high-mass gamma-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 disk. 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.