A 59-second period in the very high energy gamma-ray emission from the Geminga pulsar |
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Authors: | Yu I Neshpor A A Stepanyan |
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Institution: | (1) Crimean Astrophysical Observatory, p/o Nauchnyi, Crimea, 334413, Ukraine |
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Abstract: | An analysis of our observations of the Geminga object with the GT-48 ground-based gamma-ray telescope has shown that its very-high-energy gamma-ray flux is modulated with a 59-s period. The 59-s period and its time derivative previously inferred from satellite data have been confirmed. According to our data, the period was 61.94 s in 1997 at MSD=50573. The statistical significance of this result is (1?4.5)×10?4. |
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Keywords: | pulsars ground-based gamma-ray astronomy gamma-ray photons |
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