Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996aas...189.7715t&link_type=abstract
American Astronomical Society, 189th AAS Meeting, #77.15; Bulletin of the American Astronomical Society, Vol. 28, p.1375
Astronomy and Astrophysics
Astronomy
Scientific paper
We present the preliminary results of a X-ray variability study of the low-mass X-ray binary Scorpius X-1, utilizing 7-14 keV photometry by the Burst and Transient Source Experiment (BATSE) on board the Compton Gamma-Ray Observatory. We have performed a comprehensive search for periodic and quasi-periodic activity on scales of several seconds to years, using both the continuous light curves and our earth-occultation step-flux database spanning the period April 1991 to December 1995. We find strong evidence of short period quasi-periodic variability, notably at ~ 0.14 Hz, and evidence of longer period quasi-periodic variability in the range of 0.002 - 0.007 Hz, using the continuous 2.048 second/integration photometry. An analysis of the step-flux database is not yet complete pending successful calibration of the BATSE photometry for all eight detectors, but preliminary results suggest possible variability on time-scales of ~ 200 days.
Harrison Tanya
Mason Paolo
McNamara Brian
Templeton Matthew
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