Probing pulsar winds with gamma-ray binaries

Details Probing pulsar winds with gamma-ray binaries Probing pulsar winds with gamma-ray binaries

Nov 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008sf2a.conf..187c&link_type=abstract

"SF2A-2008: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics Eds.: C. Charbonnel, F. Combes

Astronomy and Astrophysics

Astrophysics

Scientific paper

We report on our current studies of high energy radiation from gamma-ray binaries, systems which emit most of their energy above an MeV. Gamma-gamma absorption and anisotropic inverse Compton scattering processes were previously investigated in the context of the young pulsar wind scenario. Here, we report on the gamma-ray emission that would originate from the unshocked pulsar wind itself, instead of originating at the shock between pulsar and stellar wind. The comparison of the theoretical spectral energy distributions with EGRET, HESS and MAGIC observations constrains the particle energy and the shock geometry. The classical pulsar wind model appears incompatible with the data. Alternative models such as the striped pulsar wind may be favored.

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