1. EPIC-pn background in deep fields – taking a deep breath before diving Finoguenov Alexis

2. HDFS

3. LH

4. COSMOS

6. COSMOS 9.5-12 keV

7. 0.5-2 keV COSMOSAndy Read

8. 2-4.5 keV COSMOS Andy Read

9. OOTE

10. Singles vs doubles

11. Spectral compari son

12. After Renormalization

13. Clean Andy

14. Detector Outskirts: the golden Mile

15. .. and renormalized

16. The effect of OOTE

17. Is there some sky background in there?

18. A msg from Andy Fabian

19. Strategy for background subtraction Observation is filtered for flaresObservation is filtered for flares We use the Filter wheel closed accumulation of Michael Freyberg for pnWe use the Filter wheel closed accumulation of Michael Freyberg for pn The above is similar to De Luca & MolendiThe above is similar to De Luca & Molendi We remove the sources identified by both Chandra and XMM (5-10% residual contamination)We remove the sources identified by both Chandra and XMM (5-10% residual contamination) Two regions are used to test the in-field backgroundTwo regions are used to test the in-field background

22. Components of the residual spectrum Hard X-ray background: 0.9-1.0 slopeHard X-ray background: 0.9-1.0 slope Galactic emission of 0.1 and 0.2 keVGalactic emission of 0.1 and 0.2 keV Intrumental background: quiescent soft protonsIntrumental background: quiescent soft protons background slope 3 background slope 3 Flux is similar to total CXB Flux is similar to total CXB

23. Conclusions Background in deep fields appears to be similarBackground in deep fields appears to be similar Initial problems with use of Andy Read‘s or David Lumb‘s background seems to resolve in difference in the cleaningInitial problems with use of Andy Read‘s or David Lumb‘s background seems to resolve in difference in the cleaning A consistent answer to 2-10 keV Cosmoc background with De Luca&MolendiA consistent answer to 2-10 keV Cosmoc background with De Luca&Molendi Quiescent soft proton flux is not evolving during 2002-2004Quiescent soft proton flux is not evolving during 2002-2004