Physics
Scientific paper
Jun 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988stin...8910680s&link_type=abstract
Presented at the 6th Simposio Nipo-Brasileiro de Ciencia e Tecnologia, Sao Jose dos Campos
Physics
Data Reduction, Explosions, Gamma Rays, Supernovae, Balloon-Borne Instruments, Emission Spectra, Energy Spectra
Scientific paper
Theoretical investigations of supernova explosions predict a high emission of gamma rays (approximately .01 photons/sq cm/s) beginning around 300 days after explosion. A balloon-borne experiment was flown in October, 1987, to observe this emission. The payload carried 4 phoswich detectors of BGO/CsI and NaI/CsI with areas 169 sq and 100 sq cm, respectively. The detectors' sensitivity (for 10,000 s at 3g/cu cm with error bar of 3 sigma) is about .001 to approximately .0001 photons/sq sm/s at energies above 200 KeV. The detectors mounted on a stabilized platform observed the supernova for about 2 hours. The data are being analyzed for pulsations (equal to or less than 0.5 ms) and gamma ray emission. Energy spectra and temporal analysis will be presented and discussed.
Jayanthi Udaya Bhaskaram
Neri Jose Angelo C. F.
Souza A. W. C.
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