Abstract Since the discovery of the supernova outburst in the LMC in 1987, we have made two attempts (on day 55 and day 407) to measure the high energy gamma-ray flux in the range 50–500 MeV, by using a balloon borne spark chamber telescope. On day 55, no positive signal was seen from the source. A 3σ upper limit of 2.9 × 10−5 ph cm −2 s −1 was obtained after the analysis of the spark chamber data. Preliminary analysis of the quick look data obtained in the second flight shows that the gamma-ray flux even on day 407 was less than 9 × 10−4 ph cm −2 s −1 (3σ).
50–500 MeV observations of LMC supernova 1987A
Advances in Space Research ; 10 , 2 ; 59-62
1989-01-01
4 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
50-500 MeV observations of LMC supernova 1987A
NTRS | 1990
|Hard X-rays from supernova 1987A
Elsevier | 1989
|Supernova Remnant 1987A: High Resolution Images and Spectrum from Chandra Observations
British Library Conference Proceedings | 2005
|Chandra observations of SNR 1987A
Online Contents | 2004
|Chandra Observations of SNR 1987A
British Library Conference Proceedings | 2004
|