Astronomy and Astrophysics – Astrophysics
Scientific paper
2008-11-15
Astrophys.J.693:1462-1473,2009
Astronomy and Astrophysics
Astrophysics
27 pages, 12 figures. References corrected. Journal Ref. with publication details added
Scientific paper
10.1088/0004-637X/693/2/1462
LS I +61 303 has been recently detected as a periodic gamma-ray source by the Major Atmospheric Imaging Cerenkov (MAGIC) telescope. A distinctive orbital correlation of the $\gamma$-ray emission was found. This work shows that the range of uncertainties yet at hand in the orbital elements of the binary system LSI as well as in the possible assumptions on the stellar wind of the optical companion play a non-negligible role in the computation of opacities to high energy processes leading to $\gamma$-ray predictions. The geometry influence on the propagation and escape of $\gamma$-ray photons is explored. With this study at hand, we analyse the results of a pulsar wind zone model for the production of gamma-rays and compare it with recent MAGIC observations.
Sierpowska-Bartosik Agnieszka
Torres Diego F.
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