Efficient data mining in the X-ray sky background

Details Efficient data mining in the X-ray sky background Efficient data mining in the X-ray sky background

Jul 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aspc..314..812c&link_type=abstract

Astronomical Data Analysis Software and Systems (ADASS) XIII, Proceedings of the conference held 12-15 October, 2003 in Strasbou

Statistics

Computation

Scientific paper

: The calculation of flux upper limits in the source-free ("background") regions of photon-limited images is complicated by instrumental and statistical modeling and requires non-trivial computational effort. We propose a scheme where the properties of source-free image regions are pre-calculated and catalogued in a compact form to allow rapid estimation of flux limits and statistical properties of the background. For the case of X-ray data, we examine the expected speed-up in massive all-sky queries resulting from such a system to pre-screen coordinate requests before running a full analysis.

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