Comparison of the BATSE LAD & SD light curves of Sco X-1: 1991-1996

Details Comparison of the BATSE LAD & SD light curves of Sco X-1: 1991-1996 Comparison of the BATSE LAD & SD light curves of Sco X-1: 1991-1996

May 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aipc..410..670h&link_type=abstract

The fourth compton symposium. AIP Conference Proceedings, Volume 410, pp. 670-674 (1997).

Mathematics

Logic

Neutron Stars, Luminosities, Magnitudes, Effective Temperatures, Colors, And Spectral Classification, X-Ray Sources, X-Ray Bursts, X-Ray

Scientific paper

Using recently calibrated Spectroscopy Detector (10-20 keV) data, we compare the high and low energy x-ray light curves of Sco X-1 since the beginning of the CGRO mission. The BATSE LAD data consists of daily averages of Earth occultation measurements. The BATSE SD Earth occultation measurements have been rebinned to the same temporal resolution as the LAD data. Both the LAD and SD data are morphologically similar, with long-lasting periods of low flux punctuated by short periods of very high flux. Additionally, the light curves show periods where Sco X-1 remained very bright in both energy regimes for several days. We also examine how the hardness evolves through individual high-flux episodes. We find that the amplitude of variability of Sco X-1 increases with increasing energy.

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