The XMM Large Scale Structure survey: The X-ray pipeline and survey selection function

Details The XMM Large Scale Structure survey: The X-ray pipeline and survey selection function The XMM Large Scale Structure survey: The X-ray pipeline and survey selection function

2006-07-10

arxiv.org/abs/astro-ph/0607177v1

Mon.Not.Roy.Astron.Soc.372:578-590,2006

Astronomy and Astrophysics

Astrophysics

16 pages, 11 figures, MNRAS accepted. The paper with full resolution cluster images is available at http://vela.astro.ulg.ac

Scientific paper

10.1111/j.1365-2966.2006.10881.x

We present the X-ray pipeline developed for the purpose of the cluster search in the XMM-LSS survey. It is based on a two-stage procedure via a dedicated handling of the Poisson nature of the signal: (1) source detection on multi-resolution wavelet filtered images; (2) source analysis by means of a maximum likelihood fit to the photon images. The source detection efficiency and characterisation are studied through extensive Monte-Carlo simulations. This led us to define two samples of extended sources: the C1 class that is uncontaminated, and the less restrictive C2 class that allows for 50% contamination. The resulting predicted selection function is presented and the comparison to the current XMM-LSS confirmed cluster sample shows very good agreement. We arrive at average predicted source densities of about 7 C1 and 12 C2 per deg2, which is higher than any available wide field X-ray survey. We finally notice a substantial deviation of the predicted redshift distribution for our samples from the one obtained using the usual assumption of a flux limited sample.

Affiliated with

Also associated with

No associations

Rating

The XMM Large Scale Structure survey: The X-ray pipeline and survey selection function does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The XMM Large Scale Structure survey: The X-ray pipeline and survey selection function, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The XMM Large Scale Structure survey: The X-ray pipeline and survey selection function will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-152483