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Title:
Gamma-ray observations of SN 1987A from Antarctica
Authors:
Rester, A. C.; Coldwell, R. L.; Dunnam, F. E.; Eichhorn, G.; Trombka, J. I.; Starr, R.; Lasche, G. P.
Affiliation:
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)
Publication:
Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 342, July 15, 1989, p. L71-L73. (ApJL Homepage)
Publication Date:
07/1989
Category:
Space Radiation
Origin:
STI
NASA/STI Keywords:
GAMMA RAY ASTRONOMY, SUPERNOVA 1987A, ANTARCTIC REGIONS, ASTRONOMICAL SPECTROSCOPY, SPECTRAL EMISSION
DOI:
10.1086/185487
Bibliographic Code:
1989ApJ...342L..71R

Abstract

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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