Search for. gamma. rays from the supernova 1987A at energies greater than 100 TeV

Journal Article · Mon Mar 21 04:00:00 EST 1988 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.60.1110· OSTI ID:5237152

Bond, I A; Budding, E; Conway, M J; Fenton, K B; Fujii, H; Fujii, Z; Hasegawa, H; Hayashida, N; Honda, M; Hotta, N

We searched for ultrahigh-energy ..gamma.. rays emitted by the supernova 1987A with a new cosmic-ray facility installed at the Black Birch Range in New Zealand. The observations from 13 October to 3 December 1987 suggest no clear clustering of events around the direction of the supernova. We conclude that an upper limit on the flux ..gamma.. rays of energies greater than 100 TeV is 1.1 x 10/sup -12/ cm/sup -2/ s/sup -1/ (95% confidence limit) for a differential spectral index ..cap alpha.. = 2.0 and source distance d = 50 kpc. This value gives an upper bound on the ..gamma..-ray luminosity of the supernova of 5.5 x 10/sup 38/ erg s/sup -1/ for 10/sup 14/--10/sup 17/ eV

• Research Organization: Department of Physics, University of Auckland, Auckland, New Zeland; Carter National Observatory of New Zealand, Wellington, New Zealand; Department of Physics, University of Tasmania, Hobart 7001, Australia; National Laboratory for High Energy Physics (KEK), Tsukuba 305, Japan; Cosmic Ray Research
• OSTI ID: 5237152
• Journal Information: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 60:12; ISSN PRLTA
• Country of Publication: United States
• Language: English

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