"Hard" X-ray emission from dwarf novae.
Abstract
We report the results of a sensitive search for 'hard' (no less than about 2 keV) X-ray emission from 47 dwarf novae, based on Ariel V Sky Survey Instrument (SSI) observations, using the point summation technique (PST). X-ray emission is detected from the region of two dwarf novae: SS Cygni and EX Hydrae. The refined SSI error box for the previously catalogued source, 2A 1251-290, is consistent with the position of EX Hya, and the variability indicated by the X-ray light curve implies that the cluster originally suggested is no longer a reasonable identification. These results are discussed in terms of the model described by Fabian et al. (1976) for X-ray emission from a system containing an accreting white dwarf.
- Publication:
-
Monthly Notices of the Royal Astronomical Society
- Pub Date:
- September 1978
- DOI:
- 10.1093/mnras/184.1.79P
- Bibcode:
- 1978MNRAS.184P..79W
- Keywords:
-
- Dwarf Stars;
- Novae;
- X Ray Sources;
- Ariel 5 Satellite;
- Astronomical Catalogs;
- Light Curve;
- Sky Surveys (Astronomy);
- Stellar Mass Accretion;
- Astronomy;
- Dwarf Novae:White Dwarfs;
- Dwarf Novae:X Rays