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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    Titel :

    50–500 MeV observations of LMC supernova 1987A


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

    Erschienen in:

    Erscheinungsdatum :

    1989-01-01


    Format / Umfang :

    4 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



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    Hard X-rays from supernova 1987A

    Sunyaev, R.A. / Efremov, V. / Kaniovsky, A. et al. | Elsevier | 1989


    Supernova Remnant 1987A: High Resolution Images and Spectrum from Chandra Observations

    Park, S. / Zhekov, S. A. / Burrows, D. N. et al. | British Library Conference Proceedings | 2005


    Chandra observations of SNR 1987A

    Park, S. | Online Contents | 2004


    Chandra Observations of SNR 1987A

    Park, S. / Zhekov, S. A. / Burrows, D. N. et al. | British Library Conference Proceedings | 2004