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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 |
| Institution: | 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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