Search for 8-80 KEV X-Rays from the Large Magellanic Cloud and the Crab Nebula
Abstract
An X-ray detector was flown on a sounding rocket launched from Johnston Atoll. The region scanned included that part of the south circumpolar sky containing the Large Magellanic Cloud. No X-rays were detectable above background from the direction of the Large Magellanic Cloud. An upper limit of 8 X 1 ergs is derived for the X-ray flux between 8- and 60-keV photon energy. X-rays were detected from the Sun and from the Crab Nebula. A spectrum is derived for photons between 10 and 40 keV from the Crab Nebula. The flux in this region is about the same as that measured in a previous experiment.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- November 1967
- DOI:
- 10.1086/149343
- Bibcode:
- 1967ApJ...150..405S