Abstract
The past decade has presented a revolution in the field of observational high energy γ-ray astrophysics with the advent of a new generation in ground-based TeV telescopes and subsequent GeV space telescopes. The Fermi Large Area Telescope (LAT)was launched in August 2008 and has offered unprecedented sensitivity and survey capabilities in the 30 MeV - 300 GeV energy range.
Presented here are the results from the first two years of LAT observations of galactic binary systems including the definitive detections of LS I +61◦303, LS 5039 and Cyg X-3. These sources and others are discussed in context with their known TeV and X-ray properties. The LAT data provides new understandings and pose new questions about the nature of these objects. The identification of an exponential cutoff in the spectra of both LS I +61◦303 and LS 5039 was unexpected and poses challenges for explaining the emission mechanisms and processes which are in operation within these systems.
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Hill, A.B., Dubois, R., Torres, D.F., Fermi-LAT collaboration. (2011). Fermi results on γ-ray binaries. In: Torres, D., Rea, N. (eds) High-Energy Emission from Pulsars and their Systems. Astrophysics and Space Science Proceedings. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-17251-9_41
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DOI: https://doi.org/10.1007/978-3-642-17251-9_41
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