A Multiyear Light Curve of Scorpius X-1 Based on Compton Gamma Ray Observatory BATSE Spectroscopy Detector Observations

Details A Multiyear Light Curve of Scorpius X-1 Based on Compton Gamma Ray Observatory BATSE Spectroscopy Detector Observations A Multiyear Light Curve of Scorpius X-1 Based on Compton Gamma Ray Observatory BATSE Spectroscopy Detector Observations

Jun 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998apjs..116..287m&link_type=abstract

Astrophysical Journal Supplement v.116, p.287

Astronomy and Astrophysics

Astronomy

5

Gamma Rays: Observations, Stars: Individual Constellation Name: Scorpius X-1, X-Rays: Stars

Scientific paper

A multiyear light curve of the low mass X-ray binary, Scorpius X-1, is constructed based on the Compton Gamma Ray Observatory Burst and Transient Source Experiment (BATSE) Spectroscopy Detector (SD) data in the nominal energy range of 10-20 keV. A detailed discussion is given of the reduction process of the BATSE/SD data. Corrections to the SD measurements are made for off-axis pointings, spectral and bandpass changes, and differences in the eight SD sensitivities. The resulting 4.4 yr Sco X-1 SD light curve is characterized in terms of the timescales over which various types of emission changes occur. This light curve is then compared with Sco X-1 light curves obtained by Ariel 5, the BATSE Large Area Detectors (LADs), and the RXTE all-sky monitor (ASM). Coincident temporal coverage by the BATSE/SD and RXTE/ASM allows a direct comparison of the behavior of Sco X-1 over a range of high energies to be made. These ASM light curves are then used to discuss model constraints on the Sco X-1 system.

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