The soft X-ray superoutburst of VW hydri: 14 second periodicity
Abstract
EXOSAT observations of the dwarf nova VW Hydri reveal a strong soft X-ray flux during optical superoutburst. The onset of the X-ray outburst was delayed by 2.5 days compared to the optical outburst. A modulation of the extreme soft X-ray flux was detected, consistent with a coherent (0 >x 107) pulsation with a period of 14.07 seconds, probably reflecting the rotation period of the white dwarf.IIf this is indeed the case, VW Hydri is the fastest rotating white dwarf detected so far.
- Publication:
-
Advances in Space Research
- Pub Date:
- 1985
- DOI:
- 10.1016/0273-1177(85)90455-7
- Bibcode:
- 1985AdSpR...5c..77V
- Keywords:
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- Dwarf Novae;
- Stellar Radiation;
- X Ray Astronomy;
- Bursts;
- Exosat Satellite;
- Light Curve;
- Stellar Oscillations;
- Astrophysics