Flux measurements using the BATSE spectroscopic detectors

Details Flux measurements using the BATSE spectroscopic detectors Flux measurements using the BATSE spectroscopic detectors

Nov 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993asee.nasaq....m&link_type=abstract

In Alabama Univ., The 1993 NASA/ASEE Summer Faculty Fellowship Program 5 p (SEE N94-24405 06-80)

Astronomy and Astrophysics

Astronomy

Astronomical Spectroscopy, Gamma Ray Observatory, Photons, X Ray Binaries, Earth Limb, Mass, Occultation, Scorpius Constellation

Scientific paper

Among the Compton Gama-Ray Observatory instruments, the BATSE Spectroscopic Detectors (SD) have the distinction of being able to detect photons of energies less than about 20 keV. This is an interesting energy range for the examination of low mass X-ray binaries (LMXB's). In fact, Sco X-1, the prototype LMXB, is easily seen even in the raw BATSE spectroscopic data. The all-sky coverage afforded by these detectors offers a unique opportunity to monitor this source over time periods never before possible. The aim of this investigation was to test a number of ways in which both continous and discrete flux measurements can be obtained using the BATSE spectroscopic datasets. A instrumental description of a SD can be found in the Compton Workshop of Apr. 1989, this report will deal only with methods which can be used to analyze its datasets. Many of the items discussed below, particularly in regard to the earth occultation technique, have been developed, refined, and applied by the BATSE team to the reduction of BATSE LAD data. Code written as part of this project utilizes portions of that work. The following discussions will first address issues related to the reduction of SD datasets using the earth occultation technique. It will then discuss methods for the recovery of the flux history of strong sources while they are above the earth's limb. The report will conclude with recommended reduction procedures.

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