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An imaging observation of SN 1987A at gamma-ray energies (1988)

Cook, W. R. ; Schindler, S. M. ; Starr, C. H. ; [et al.]

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Publication Date: 2019-07-12

Description: The Caltech imaging gamma-ray telescope was launched by balloon from Alice Springs, Australia for observations of SN 1987A during November 1987. The preliminary results presented here are derived from 8200 s of instrument live time on the supernova and 2500 s on the Crab Nebula and pulsar at a float altitude of 36 km. Images of the SN 1987A region at gamma-ray energies confirming that the bulk of the gamma-ray emission comes from the supernova and not from LMC X-1. These flux measurements are compared to recent predictions concerning the distribution of Co-56 in the supernova ejecta. The data are consistent with models invoking moderate mixing of core material into the envelope.

Keywords: ASTROPHYSICS

Type: Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X); 334; L87-L90

Format: text

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