High-speed photometry of the Cygnus X-2 optical candidate

Details High-speed photometry of the Cygnus X-2 optical candidate High-speed photometry of the Cygnus X-2 optical candidate

Dec 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976a%26a....53..313c&link_type=abstract

Astronomy and Astrophysics, vol. 53, no. 2, Dec. 1976, p. 313-315. Research supported by the Commissariat a l'Energie Atomique,

Astronomy and Astrophysics

Astrophysics

9

Astronomical Photometry, Power Spectra, Spectrum Analysis, Variable Stars, X Ray Sources, X Ray Spectra, Computer Techniques, Electrophotometry, Fast Fourier Transformations, Light Curve, Radiant Flux Density, Signal Processing

Scientific paper

The paper reports photometric observations of the Cygnus X-2 optical candidate with 0.1-s resolution. Power spectrum analysis of data obtained on two different nights when the object was faint shows no evidence for rapid variability. A 3-sigma upper limit of 0.15 per cent of the mean optical flux is derived for fluctuations with periods between 0.2 s and 10 min.

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