Searches for Ultra--High-Energy Gamma Rays from SN 1987A and Centaurus X-3

Details Searches for Ultra--High-Energy Gamma Rays from SN 1987A and Centaurus X-3 Searches for Ultra--High-Energy Gamma Rays from SN 1987A and Centaurus X-3

Dec 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996apj...472..800y&link_type=abstract

Astrophysical Journal v.472, p.800

Astronomy and Astrophysics

Astronomy

3

Gamma Rays: Observations, Stars: Individual Constellation Name: Centaurus X-3, Stars: Supernovae: Individual Alphanumeric: Sn 1987A

Scientific paper

Searches for gamma rays above 100 TeV from SN 1987A and above 50 TeV from Cen X-3 were carried out with an air shower array at Mount Chacaltaya over a period of 3 years. The array, which consists of 13 4 m^2^ and 28 1 m^2^ scintillation detectors, was located on a slope of about 30^deg^ facing southward to effectively observe air showers coming from the directions of these sources. In the analysis, a selection by shower age parameter was applied to reduce the background due to showers initiated by protons or nuclei. No significant excess of gamma rays (and/or neutral particles) from these sources was found; our upper limits on the flux of gamma rays above 100 TeV from SN 1987A and above 50 TeV from Cen X-3 are 2.2 x 10^-13^ and 3.5 x 10^-13^ photons cm^-2^ s^-1^ (95% confidence level), respectively.

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