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).


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    Titel :

    50-500 MeV observations of LMC supernova 1987A


    Beteiligte:
    Sumner, T. J. (Autor:in) / Rochester, G. K. (Autor:in) / Sood, R. K. (Autor:in) / Thomas, J. (Autor:in) / Waldron, L. (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    01.01.1990



    Medientyp :

    Sonstige


    Format :

    Keine Angabe


    Sprache :

    Englisch


    Schlagwörter :


    50–500 MeV observations of LMC supernova 1987A

    Summer, T.J. / Rochester, G.K. / Sood, R.K. et al. | Elsevier | 1989


    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