Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988mnras.234p..73s&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 234, Oct. 1, 1988, p. 73P-77P. NASA-CNR-SERC-DFG-suppor
Astronomy and Astrophysics
Astronomy
6
Gamma Ray Astronomy, Magellanic Clouds, Supernova 1987A, X Ray Sources, Balloon-Borne Instruments, Radiation Detectors, Relativistic Particles
Scientific paper
A balloon-borne experiment was carried out on April 19, 1987 from Alice Springs, Australia to detect high-energy gamma-rays and hard X-rays from the supernova SN 1987A in the Large Magellanic Cloud. An optical spark chamber for measuring the high-energy gamma-rays and a multiwire proportional counter for measuring the hard X-rays shared a common balloon platform. No positive emission was observed by either detector. The gamma-ray upper limit obtained indicates that either the expanding supernova shell was opaque to gamma-rays at the time of the flight, or that the supernova cosmic ray luminosity was less than about 10 to the 40th erg/s. The X-ray upper limit obtained confirms the opacity of the shell to Comptonized hard X-rays.
Albats P.
Bazzano Angela
Frye G.
Jenkins Teresa
Kendziorra Eckhard
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