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MOS 3x3 mode slow slew survey

MOS 3x3 mode slow slew survey. Richard Saxton October 2006. MOS 3x3 mode. New SAS mode PRIMEFULLWIN3X3. 201. 0.4 s. 203. SAS for simplicity remaps raw pixels from the 203x201 back onto the original 610 x 602 grid randomising to avoid gaps.

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MOS 3x3 mode slow slew survey

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  1. MOS 3x3 mode slow slew survey Richard Saxton October 2006

  2. MOS 3x3 mode New SAS mode PRIMEFULLWIN3X3 201 0.4 s 203 SAS for simplicity remaps raw pixels from the 203x201 back onto the original 610 x 602 grid randomising to avoid gaps. emchain emenergy:rejectbade3e4=NO emenergy:detectbadoffset=NO Use events with #XMMEA_EM && PATTERN==0 EPIC cal, Mallorca MOS 3x3 slew survey

  3. Slow survey mode MOS-2 full slew, first leg (242/3), 30 degrees/hour PN MOS-2 1E 1746.7-3224 – MOS position 10’ off EPIC cal, Mallorca MOS 3x3 slew survey

  4. Energy scale Al = 1492 +/- 7 eV Spectrum of all pattern 0 events Looks good EPIC cal, Mallorca MOS 3x3 slew survey

  5. Light curve IGR J17497-2821 Full band background = 3c/s (per ¼ sq deg) EPIC cal, Mallorca MOS 3x3 slew survey

  6. PSF Extension=12” in slew direction due to frame time of 400 ms 1E 1746.7-3224 • PSF needs to be modeled fully for correct ARF • Experience with PN eFF mode (18” extension) shows that sources aren’t missed but are falsely flagged as extended EPIC cal, Mallorca MOS 3x3 slew survey

  7. PSF comparison for IGR J17497-2821 Mos-1 PN MOS-2 Quite off-axis, PSF broader EPIC cal, Mallorca MOS 3x3 slew survey

  8. Exposure map MOS-1 exposure histogram MOS-2 exposure histogram MOS-2 exp map MOS-2 mean on-axis exposure time = 21.5s MOS-1 mean exposure time = 17.3s EPIC cal, Mallorca MOS 3x3 slew survey

  9. Light curve Shows vignetting effect of movement through detector EPIC cal, Mallorca MOS 3x3 slew survey

  10. Spectra 1E 1746.7-3224 – LMXB, NH=6E21 EPIC cal, Mallorca MOS 3x3 slew survey

  11. Current problems • FLAGs – currently all events marked bad • All frames are marked as ‘extended’ because not enough time to read a frame while next one is looking at the sky (need 500ms?) • E3/E4 background determination problematic • Bad pixels need remapping onto 203x201 grid ? • Pattern 0 only - but need to calculate pattern fractions • Position errors of a few arc minutes EPIC cal, Mallorca MOS 3x3 slew survey

  12. EPIC cal, Mallorca MOS 3x3 slew survey

  13. Hardness ratios The bulk spectral properties of the EPIC_pn catalogue detections. HR1 = (F2 - F1) / (F2 + F1) HR2 = (F3 - F2) / (F3 + F2) HR3 = (F4 - F3) / (F4 + F3) Left panels are for high galactic latitude, right panels are for low galactic latitude. EPIC cal, Mallorca MOS 3x3 slew survey

  14. How to access the catalogue • Fits file from http://xmmssc-www.star.le.ac.uk/ • The XSA http://xmm.vilspa.esa.es/xsa/ • SCI-DB http://xcatdb.u-strasbg.fr/xcat-db/ • User documentation: http://xmmssc-www.star.le.ac.uk/newpages/UserGuide_1xmm.html • LEDAS http://ledas-www.star.le.ac.uk Current ref: Watson et al. 2003, Astron. Nachr., 324, 89 EPIC cal, Mallorca MOS 3x3 slew survey

  15. 2XMM – coming soon • ~3000 observations • ~150,000 sources – largest X-ray catalogue ever • Similar flux limits to 1XMM • Finds extended sources • Release planned for 2006 – possible pre-release in Sept. • Bright sources (>500 counts) will have associated spectra and time series. EPIC cal, Mallorca MOS 3x3 slew survey

  16. XMM slew survey: XMMSL1 • Released May 2006 • Shallow survey of wide part of sky (6000 deg^2) • Flux limits, F0.2-12=1x10-12 ergs s-1 cm-2 • ~4000 sources, of which 40% are unidentified • Good for large extended sources, hard band survey, variability studies. • Available from XSA, http://xmm.vilspa.esa.es/xsa/ • Growing as XMM continues to slew EPIC cal, Mallorca MOS 3x3 slew survey

  17. Correlations with ROSAT - 55% of sources correlate with ROSAT (non-extended, DET_ML>10) - 1% show variability by > factor of ten Mean rate : XMM-slew/ROSAT~10 EPIC cal, Mallorca MOS 3x3 slew survey

  18. Vela Supernova Remnant ROSAT XMM-Newton Slew EPIC cal, Mallorca MOS 3x3 slew survey ~½ hour observing time !

  19. EPIC cal, Mallorca MOS 3x3 slew survey

  20. Summary • 1XMM, XMMSL1 relatively unexplored at present. • Data is public • 2XMM available within months and containing samples at medium flux for most source types. EPIC cal, Mallorca MOS 3x3 slew survey

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