Search for cosmic γ-ray bursts in the (1÷50) GeV energy range

M. Aglietta, B. Alessandro, P. Antonioli, F. Arneodo, L. Bergamasco, A. Campos Fauth, C. Castagnoli, A. Castellina, C. Cattadori, A. Chiavassa, G. Cini, B. D.Ettorre Piazzoli, W. Fulgione, P. Galeotti, P. L. Ghia, G. Mannocchi, C. Morello, G. Navarra, L. Riccati, O. SaavedraG. C. Trinchero, P. Vallania, S. Vernetto

Research output: Contribution to journalArticlepeer-review


A search for cosmic gamma-ray bursts in the GeV energy range has been performed by means of the EAS-TOP Extensive Air Shower array at Campo Imperatore (Gran Sasso Laboratories) during the period March-December 1990. In 2566.5 hours of measurement the obtained upper limit to the rate of bursts of amplitude >2% of the cosmic-ray intensity and time duration τ=1 s, is R≤7.9y-1 (90% c.l.). Assuming for γ-rays a differential energy spectrum S(E 0 )≈E 0 -2.5, the corresponding upper limit to the energy flux of γ-rays with energy >5 GeV in bursts of duration τ≤1 s is Φ<8.3·10-5erg cm-2.

Original languageEnglish (US)
Pages (from-to)441-446
Number of pages6
JournalIl Nuovo Cimento C
Issue number4
StatePublished - Jul 1992


  • Cosmic-ray interactions with the Earth

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Physics and Astronomy (miscellaneous)


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