| タイトル | 50-500 MeV observations of LMC supernova 1987A |
| 著者（英） | Waldron, L.; Thomas, J.; Sumner, T. J.; Rochester, G. K.; Sood, R. K. |
| 著者所属（英） | Imperial Coll. of Science and Technology|New South Wales Univ. |
| 発行日 | 1990-01-01 |
| 言語 | eng |
| 内容記述 | 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). |
| NASA分類 | SPACE RADIATION |
| レポートNO | 90A15959 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/359583 |
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