An Imaging Observation of SN 1987A at Gamma-Ray Energies
Abstract
The Caltech imaging γ-ray telescope was launched by balloon from Alice Springs, NT, Australia for observations of SN 1987A during the period 1987 November 18.60-18.87 UT. The preliminary results presented here are derived from 8200 s of instrument live time on the supernova and 2500 s on the Crab Nebula and pulsar at a float altitude of 36 km. We have obtained the first images of the SN 1987A region at γ-ray energies confirming that the bulk of the γ-ray emission comes from the supernova and not from LMC X-1. We compare our flux measurements to recent predictions concerning the distribution of ^(56)Co in the supernova ejecta and find the data to be consistent with models invoking moderate mixing of core material into the envelope.
Additional Information
© 1988 The American Astronomical Society. Received 1988 May 12; accepted 1988 August 24. We acknowledge the important contributions to the development of the GRIP telescope made by W. Althouse, D. Burke, A. Cummings, M. Finger, J. Weger, and the personnel of Central Engineering Services at the California Institute of Technology. We thank the personnel of the National Scientific Balloon Facility and the NASA Wallops Flight Facility for their excellent balloon launch support. This work was supported by NASA grant NGR 05-002-160.Attached Files
Published - 1988-01.pdf
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Additional details
- Eprint ID
- 45396
- Resolver ID
- CaltechAUTHORS:20140501-093537827
- NGR 05-002-160
- NASA
- Created
-
2014-05-01Created from EPrint's datestamp field
- Updated
-
2021-11-10Created from EPrint's last_modified field
- Caltech groups
- Space Radiation Laboratory
- Other Numbering System Name
- Space Radiation Laboratory
- Other Numbering System Identifier
- 1988-01