Anisotropic scattering from the circumstellar disc in PSR B1259-63

Abstract

The gamma-ray binary system PSR B1259-63 has recently passed through periastron and has been of particular interest as it was observed by Fermi near the December 2010 periastron passage. The system has been detected at very high energies with H.E.S.S. The most probable production mechanism is inverse Compton scattering between target photons from the optical companion and disc, and relativistic electrons in the pulsar wind. We present results of a full anisotropic inverse Compton scattering model of the system, taking into account the IR excess from the extended circumstellar disc around the optical companion.

4 pages, 1 figure, for the proceedings of High Energy Phenomena in Relativistic Outflows III (HEPRO III) to be published in IJMPCS

References in corpus (7)

• Discovery of High-Energy Gamma-Ray Emission from the Binary System PSR B1259-63/LS 2883 Around Periastron with Fermi
• Astrophysical parameters of LS2883 and implications for the PSR B1259-63 gamma-ray binary
• Discovery of a point-like very-high-energy gamma-ray source in Monoceros
• The modulation of the gamma-ray emission from the binary LS 5039
• Hydrodynamic Interaction between the Be Star and the Pulsar in the TeV Binary PSR B1259-63/LS 2883
• Gamma Ray Signal from the Pulsar Wind in the Binary Pulsar system PSR B1259-63/LS2883
• The effect of the infrared excess from the Be star on inverse Compton gamma-ray production in PSR B1259-63/SS 2883