Since the discovery of the supernova outburst in the LMC in 1987, two attempts (on day 55 and day 407) have been made 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 3 sigma upper limit of 2.9 x 10 to the -5th ph/sq cm s 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 x 10 to the -4th ph/sq cm s (3 sigma).
50-500 MeV observations of LMC supernova 1987A
Advances in Space Research ; 10 , 2, 19
1990-01-01
Miscellaneous
No indication
English
50–500 MeV observations of LMC supernova 1987A
Elsevier | 1989
|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
|