High-resolution observations of gamma-ray line emission from SN 1987A

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

DOI:https://doi.org/10.1086/185319· OSTI ID:6535172

Sandie, W G; Nakano, G H; Chase, Jr, L F; Fishman, G J; Meegan, C A; Wilson, R B

Observations of SN 1987A made with a balloon-borne gamma-ray spectrometer comprising an array of high-purity germanium detectors on October 29-31, 1987 are presented. High resolution data, typically 2.5 keV at 1.33 MeV, were obtained for two transists of the supernova with interspersed background data. A preliminary estimation of line flux is presented. It is found that there is evidence of dynamical broadening of the 847 keV line. It is suggested that this line may be an emission from the first excited state of Fe-56 due to the radioactive decay of Co-56 providing evidence for nucleosynthesis in the supernova. 15 references.

• Research Organization: Lockheed Research Laboratories, Palo Alto, CA (USA); NASA, Marshall Space Flight Center, Huntsville, AL (USA)
• OSTI ID: 6535172
• 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
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
COBALT 56
COBALT ISOTOPES
DAYS LIVING RADIOISOTOPES
DECAY
ELECTROMAGNETIC RADIATION
ELECTRON CAPTURE RADIOISOTOPES
EMISSION SPECTRA
ENERGY SPECTRA
ERUPTIVE VARIABLE STARS
EVEN-EVEN NUCLEI
GAMMA RADIATION
INTERMEDIATE MASS NUCLEI
IONIZING RADIATIONS
IRON 56
IRON ISOTOPES
ISOTOPES
MEASURING INSTRUMENTS
NUCLEI
NUCLEOSYNTHESIS
ODD-ODD NUCLEI
RADIATION FLUX
RADIATIONS
RADIOISOTOPES
SPECTRA
SPECTROMETERS
STABLE ISOTOPES
STAR EVOLUTION
STARS
SUPERNOVAE
SYNTHESIS
VARIABLE STARS