Gamma-ray observations of Co-56 in SN 1987A

Journal Article · Tue Nov 01 04:00:00 EST 1988 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/185317· OSTI ID:6392153

Mahoney, W A; Varnell, L S; Jacobson, A S; Ling, J C; Radocinski, R G

During observations of SN 1987A 286 days after the supernova explosion using a JPL high-resolution gamma-ray spectrometer, a line feature was found in the net supernova spectrum at an energy of 1240.8 + or - 1.7 keV, with an intrinsic width of 8.2 + or - 3.4 keV FWHM, and a net flux of 0.0021 + or - 0.0007 photons/sq cm per s. This feature is interpreted as the 1238 keV line from the decay of Co-56 in the supernova remnant. The blueshift and intrinsic broadening of the 1238 keV line are consistent with models incorporating mixing of the radioactive cobalt in the expanding eject. 26 references.

• Research Organization: California Institute of Technology, Pasadena (USA)
• OSTI ID: 6392153
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 334; ISSN ASJOA
• Country of Publication: United States
• Language: English

Related Subjects

640102* -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COBALT ISOTOPES
COSMIC RADIO SOURCES
DECAY
ELECTROMAGNETIC RADIATION
GALAXIES
GAMMA RADIATION
IONIZING RADIATIONS
ISOTOPES
MAGELLANIC CLOUDS
MATHEMATICAL MODELS
MEASURING INSTRUMENTS
MIXING
RADIATIONS
SPECTROMETERS
STAR MODELS
SUPERNOVA REMNANTS