Geminga pulsar observations with gamma-telescope Gamma-1

• Published in: Advances in space research Vol. 13; no. 12; pp. 739 - 742
• Main Authors: Akimov, V.V., Afanassyev, V.G., Blokhintsev, I.D., Kalinkin, L.F., Leikov, N.G., Nesterov, V.E., Galper, A.M., Ozerov, Y.V., Rudko, V.A., Runtso, M.F., Zemskov, V.M., Fradkin, M.I., Kurnosova, L.V., Russakovitch, M.A., Topchiev, N.P., Chuikin, E.I., Tugaenko, V.Y., Gros, M., Bazer-Bachi, A.R., Lavigne, J.-M., Olive, J.-F.
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.12.1993
• ISSN: 0273-1177; 1879-1948
• DOI: 10.1016/0273-1177(93)90190-M

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)·10−6cm−2sec−1.