X-ray observations of SN1987A with Ginga
Abstract
Continuous observations of the Large Magellanic CLoud region made with Ginga since February 25, 1987 revealed the X-rays with unusual energy spectrum from the region of 0.2×0.3 deg2 including the supernova SN1987A. The first detection of a significant X-ray flux from SN1987A was detected about 130 days after its explosion. The energy spectrum shows the presence of unusually hard component above 10-15 keV. The light curve shows the relatively large intensity variations in the low energy band of 5.8-16.1 keV, in contrast to small variations in high energy band of 16.1-27.8 keV. About 320 days after the explosion, the SN1987A showed large increase about factor of 6 in 20 days, and they decayed to the half of the peak flux level in 30 days.
- Publication:
-
Nuclear Spectroscopy of Astrophysical Sources
- Pub Date:
- September 1988
- DOI:
- 10.1063/1.37230
- Bibcode:
- 1988AIPC..170...34T
- Keywords:
-
- 97.60.Bw;
- 95.85.Nv;
- Supernovae;
- X-ray