Publikationsdatum:
2019-07-12
Beschreibung:
Gamma-ray lines from the dirction 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.
Schlagwort(e):
SPACE RADIATION
Materialart:
Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X); 342; L71-L73
Format:
text
Permalink