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Geminga pulsar observations with gamma-telescope Gamma-1 |
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| Authors: | V. V. Akimov V. G. Afanassyev I. D. Blokhintsev L. F. Kalinkin N. G. Leikov V. E. Nesterov A. M. Galper Y. V. Ozerov V. A. Rudko M. F. Runtso V. M. Zemskov M. I. Fradkin L. V. Kurnosova M. A. Russakovitch N. P. Topchiev E. I. Chuikin V. Y. Tugaenko M. Gros A. R. Bazer-Bachi J. -M. Lavigne J. -F. Olive |
| Affiliation: | 1 Space Research Institute of the Acadmey of Sciences of the RF, Profsoyuznaya 84/32, 117810, Moscow, Russia 2 Moscow Physical Engineering Institute, Kashirskoe shosse 31, 115409, Moscow, Russia 3 Lebedev Physical Institute of the Academy of Sciences of the RF, Leninsky prospect 53, 117924, Moscow, Russia 4 Ioffe Physical and Technical Institute of the Academy of Sciences of the USSR, Polytechnicheskaya 26, 194021, St. Petersburg, Russia 5 NPO “Energia”, Kaliningrad, Moscow region, Russia 6 Centre d'Etudes Nucleaires, 91191, Saclay, France 7 Centre d'Etude Spatiales des Rayonnements, 31029, Toulouse, France |
| Abstract: | The Geminga light curve obtained with the “Gamma-1” telescope features two peaks separated by 0.5 ± 0.03 period. The light curve is pronounced for γ-quanta energies higher than 400 MeV. The pulsed flux upper limit (1σ) in the energy interval 50 – 300 MeV is 6·10−7 cm−2sec−1. For energies >300 MeV the pulsed component power law spectrum has an exponent 1.1 −0.3+1.1 and an integral flux (1.1±0.3)·10−6 cm−2sec−1. |
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