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Paper: Effectiveness of the Gregory-Loredo Algorithm for the Detection of Temporal Variability in Chandra Data
Volume: 351, Astronomical Data Analysis Software and Systems XV
Page: 73
Authors: Rots, A.H.
Abstract: In searching for a reliable variability indicator for Chandra X-ray event data, we implemented and tested the Gregory-Loredo (Gregory & Loredo 1992) algorithm. The test was performed on 118 sources detected in a single observation, spanning the intensity range of 5 to 24000 photons over a total observing time of 102000 s. The G-L algorithm is extremely robust, yielding a reliable variability indicator as well as a light curve with optimal resolution while requiring a very modest amount of CPU time. The algorithm can also work on binned data and handle data gaps as well as variations in effective area.
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