Variability of VHE γ–ray emission from the binary PSR B1259–63/LS 2883
Institute of Particle and Nuclear Physics, Faculty of Mathematics and Physics, Charles University V Holesovickach 2, 180 00 Prague 8, Czech Republic
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Published online: 8 December 2015
We examine changes of the γ-ray intensity observed from the direction of the binary system PSR B1259–63/LS 2883 during campaigns around its three periastron passages. A simple and straightforward method is applied to the published data obtained with the Imaging Atmospheric Cherenkov Technique. Regardless of many issues of the detection process, the method works only with numbers of very high energetic photons registered in the specified regions. Within the realm of this scheme, we recognized changes attributable to the variations of the intrinsic source activity at high levels of significance.
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