A&A 454, 997-1009 (2006)
Matched filters for source detection in the Poissonian noise regimeI. M. Stewart1, 2
1 Department of Physics and Astronomy, University of Leicester, University Road, Leicester LE1 7RH, UK
2 Jodrell Bank Observatory, University of Manchester, Macclesfield SK11 9DL, UK
(Received 23 May 2005 / Accepted 9 February 2006)
A procedure is described for estimating an optimum kernel for the detection by convolution of signals among Poissonian noise. The technique is applied to the detection of X-ray point sources in XMM-Newton data, and is shown to yield an improvement in detection sensitivity of up to 60% over the sliding-box method used in the creation of the 1XMM catalog.
Key words: methods: data analysis -- techniques: image processing -- X-rays: general
© ESO 2006