Methods for probing quasi-periodic oscillations on short time scales

Details Methods for probing quasi-periodic oscillations on short time scales Methods for probing quasi-periodic oscillations on short time scales

Nov 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989esasp.296..557n&link_type=abstract

In ESA, The 23rd ESLAB Symposium on Two Topics in X Ray Astronomy. Volume 1: X Ray Binaries p 557-561 (SEE N90-25711 19-89)

Astronomy and Astrophysics

Astronomy

1

Fourier Transformation, Noise Spectra, Stellar Oscillations, X Ray Astronomy, X Ray Binaries, Periodic Variations, Radiation Spectra, Signal To Noise Ratios, Stellar Mass

Scientific paper

Optimal filter analysis techniques are employed in order to set constraints on the nature of possible relationships between Low Frequency Noise (LFN) and Quasi-Periodic Oscillations (QPOs) in GX5-1 on time scales near the QPO coherence length. Simulations afford comparison with theory and calibrate the high noise bias. Models in which LFN shots modulate sinusoidal QPOs are explored for shot rates approx. 400 Hz and shot clustering fractions approx. 50 percent. The models are found to be incompatible with the data.

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