Time screening optimization algorithm for ROSAT PSPC/HRI observations.

Details Time screening optimization algorithm for ROSAT PSPC/HRI observations. Time screening optimization algorithm for ROSAT PSPC/HRI observations.

Feb 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996rftu.proc..673b&link_type=abstract

International Conference on X-ray Astronomy and Astrophysics: Röntgenstrahlung from the Universe, p. 673 - 674

Astronomy and Astrophysics

Astronomy

1

Data Processing: X-Ray Astronomy

Scientific paper

ROSAT PSPC/HRI observations are characterized by intervals with significant background count-rate enhancements mainly due to particles or solar scattered radiation. The authors have developed an algorithm for time screening PSPC/HRI observations in order to maximize the signal to noise (SNR) ratio of faint point-like sources. The algorithm parameters have been optimized with tests on real and simulated data. In the case of a crowded PSPC field pointed to the Pleiades open cluster, a typical SNR gain of ≡20% with respect to the unscreened case is obtained for faint sources with a cut of 6% of the total exposure time. This algorithm although presently tailored for the ROSAT PSPC/HRI observations can be easily generalized to the analysis of other X-ray detectors' data.

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