Rapid oscillations in cataclysmic variables. VII - GK Persei

Details Rapid oscillations in cataclysmic variables. VII - GK Persei Rapid oscillations in cataclysmic variables. VII - GK Persei

Nov 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991pasp..103.1149p&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 103, Nov. 1991, p. 1149-1157.

Astronomy and Astrophysics

Astronomy

20

Cataclysmic Variables, Light Curve, Stellar Oscillations, Ultraviolet Photometry, Hercules Nova, Stellar Rotation, White Dwarf Stars, X Ray Sources

Scientific paper

The discovery of a stable short-period oscillation in the UV light curve of the old nova GK Persei during 1989-91 is reported. The period is consistent with the 351.34-second pulse period seen in hard X-rays, due to the rotation of the white dwarf. In blue light, a quasi-periodic signal appears in the low-frequency wings of the coherent signal. There is evidence for long-term spin-up of the white dwarf; the most probable mean rate is 0.0008 sec/yr.

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