Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...334l..91s&link_type=abstract
Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 334, Nov. 15, 1988, p. L91-L94. Research supported by the Lockhee
Astronomy and Astrophysics
Astronomy
49
Astronomical Spectroscopy, Balloon-Borne Instruments, Emission Spectra, Gamma Ray Astronomy, Supernova 1987A, Energy Spectra, High Resolution, Line Spectra, Nuclear Fusion
Scientific paper
A balloon-borne gamma-ray spectrometer was flown from Alice springs, Australia, 1987 October 29 - 31, nominally 250 days after the supernova event. High-resolution data, typically 2.5 keV at 1.33 MeV, were obtained for two transits of the supernova. A significant net flux of gamma rays with energy 847 keV was observed from the direction of SN 1987A on each transit. No prominent gamma-ray features were seen at other energies. A preliminary estimate of the line flux is (5.1±1.7)×10-4photons cm-2s-1. The net flux observed in the first supernova transit extends from 838 keV to 850 keV and may be evidence of dynamical broadening of the 847 keV line. The total excess flux from 838 keV to 850 keV corresponds to (1.0±0.28)×10-3photons cm-2s-1. This line may be interpreted as emission from the first excited state of 56Fe due to the radioactive decay of 56Co.
Chase F. Jr. L.
Fishman Gerald J.
Lasché G. P.
Meegan Charles A.
Nakano George H.
No associations
LandOfFree
High-resolution observations of gamma-ray line emission from SN 1987A does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with High-resolution observations of gamma-ray line emission from SN 1987A, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High-resolution observations of gamma-ray line emission from SN 1987A will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1825820