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Gamma-ray observations of SN 1987A from Antarctica
Rester, A. C.; Coldwell, R. L.; Dunnam, F. E.; Eichhorn, G.; Trombka, J. I.; Starr, R.; Lasche, G. P.
AA(Florida, University, Alachua), AB(Florida, University, Alachua), AC(Florida, University, Alachua), AD(Florida, University, Gainesville), AE(NASA, Goddard Space Flight Center, Greenbelt, MD), AF(NASA, Goddard Space Flight Center, Greenbelt, MD; Catholic University of America, Washington, DC)
Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 342, July 15, 1989, p. L71-L73. (ApJL Homepage)
Publication Date:
Space Radiation
NASA/STI Keywords:
Gamma Ray Astronomy, Supernova 1987a, Antarctic Regions, Astronomical Spectroscopy, Spectral Emission
Bibliographic Code:


Gamma-ray lines from the direction of supernova 1987A have been observed with a Ge detector flown on a high-altitude balloon platform over Antarctica in January 1988. Gamma rays at 844.1 + or - 1.0 and 1239.9 + or - 1.5 keV, with fluxes 0.0023 + or - 0.002 and 0.0021 + or - 0.001 photons/sq cm sec, respectively, are attributed to the radioactive decay of Co-56. Errors quoted do not include possible systematic effects.

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