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http://www.stecf.org/conferences/adass/adassVII/starckjl.html.
http://www.stecf.org/conferences/adass/adassVII/starckjl.html.
1. Structure Detection in Low Intensity X-Ray Images using the Wavelet Transform
... In the context of assessing and characterizing structures in X-ray images, we compare different approaches. The intensity level is often very low and necessitates a special treatment of Poisson statistics. ... Finally, using a set of ROSAT HRI deep pointings, the presence of small-scale structures in the central regions of clusters of galaxies is investigated. ... Hence, WT has been used for clusters and subclusters analysis (Slezak et al. ...
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Ссылки http://www.stecf.org/conferences/adass/adassVII/starckjl.html -- 16.2 Кб -- 12.06.2006
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2. http://www.stecf.org/conferences/adass/adassVII/reprints/starckjl.ps.gz
... Structure Detection in Low Intensity XRay Images using the Wavelet Transform Applied to Galaxy Cluster Cores Analysis JeanLuc Starck and Marguerite Pierre CEA/DSM/DAPNIA F91191 GifsurYvette cedex Abstract. ... Multiresolution filtering methods based on the wavelet coe#cients detection are also discussed. Finally, using a set of ROSAT HRI deep pointings, the presence of smallscale structures in the central regions of clusters of galaxies is investigated. ... 1995; Rosati et al. ... 1996). ...
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Ссылки http://www.stecf.org/conferences/adass/adassVII/reprints/starckjl.ps.gz -- 90.5 Кб -- 12.06.2006
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3. IRAF/STECF 2-D spectrum point source / background decomposition package
IRAF/STECF 2-D spectrum point source / background decomposition package . ... The general problem is one of spectral decomposition - of separating the spectra of the point sources from the background. ... The STECF IRAF layered package "specres" provides two tasks to extract point source spectra from 2-D images (either longslit, multislit or cross-dispersed) and decompose the full background over the image. ... A Point Source Function spectrum image is required as a 2-D spectrum. ...
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Ссылки http://www.stecf.org/software/IRAFtools/stecf-iraf/specres/ -- 16.5 Кб -- 08.06.2006
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