HEAO-1 soft X-ray observations of Sirius.
Abstract
The soft X-ray intensity, spectrum, and variability of Sirius as determined with the HEAO A-2 experiment are reported. The X-ray spectrum of Sirius is shown to be extremely soft, and an upper limit of 200,000 K is established for the temperature of the emitting plasma. Observational constraints on models of coronal emission from a hot envelope surrounding either Sirius A or Sirius B are briefly considered
- Publication:
-
X-ray Astronomy
- Pub Date:
- 1979
- Bibcode:
- 1979xras.proc..125L
- Keywords:
-
- Binary Stars;
- Heao 1;
- Stellar Coronas;
- X Ray Sources;
- X Ray Stars;
- Astronomical Models;
- Luminous Intensity;
- Plasma Temperature;
- Astrophysics;
- Close Binaries:X Rays;
- Stellar Coronae:X Rays