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).


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    Title :

    50–500 MeV observations of LMC supernova 1987A


    Contributors:
    Summer, T.J. (author) / Rochester, G.K. (author) / Sood, R.K. (author) / Thomas, J. (author) / Waldron, L. (author) / Manchanda, R.K. (author) / Frye, G. (author) / Jenkins, T. (author) / Koga, R. (author) / Staubert, R. (author)

    Published in:

    Publication date :

    1989-01-01


    Size :

    4 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



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