MR_filter + SExtractor (current placeholder in catalog pipeline).Already applied at DC1 (J. Ballet presentation at closeout)http://www-glast.slac.stanford.edu/software/Workshops/Feb04DC1CloseOut/agenda.htm

Optimal filter method. developed by J. Ballet. Already applied at DC1 (same presentation as above)

3D wavelet filtering (space + energy or time). developed by J.L. Starck. Some ideas presented in J.L. Starck's summary talk in May 2005

http://www-glast.slac.stanford.edu/ScienceTools/workshops/May05DiffuseCat/agenda.htm

Sources detection method used at Saclay :

My modest contribution for DC2:use a 2d binned Poisson likelihood

Why ?

I already used it on Egret data.Not fancy but it works very well. Fast.Adjust the diffuse emission model (Gmult, Gbias). Characterisation not as good as 3d models.Alternative method for the catalog.

Use the Egret fortran program LIKE (1994)J.R. Mattox, D.J. Macomb, D.L.Bertsch, J.A. Esposito

What have I done so far ?

Developped a cpp wrapper for Like:Like *like=new Like (“counts_g12_30_g002.fits”,2,“cfgas.gal.g002b”,20);like->Set_ROI (60,120,-90,90);like->Set_Sources ("sources_gal_g004b_17.list");like->Set_PSFADJ ("MA0");like->Set_PSFADJ ("MAR"); like->do_LM (0.05,25,“y","LM_Output");delete like;

Run Like with the 1997 (P14) and 2001 (P19-reprocessed) Egret dataCombined it with Sextractor to detect the likelihood map excessCode to merge results from all maps (gal,eq, energies, zones, periodes) into a catalog

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Results with Egret data and diffuse emission :

All the sources in catalog were found. Found 12 new sources (not in catalog nor in Egret lower sign. source list)

82 (80) catalog sources are not any more significant.61 (70) new significant sources should appear in the catalog.

To do list for DC2

Adapt Like for resolution other than 0.5 deg.Generate:

Like-PSF file from DC2 PSFCounts and Exposure maps (weeks, days, energy bands)Galactic diffuse emission map

Run it (1308 cpu at In2p3 cc-Lyon )