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XMM-Newton EPIC relative timing analysis

XMM-Newton EPIC relative timing analysis. Isabel Caballero Anne Wellbrock M.G.F. Kirsch. Outline. Relative timing accuracy Targets Processing of data Radio period of the pulsars X-Ray period of the pulsars Final results. Fastest instrument on XMM-Newton

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XMM-Newton EPIC relative timing analysis

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  1. XMM-Newton EPIC relative timing analysis Isabel CaballeroAnne WellbrockM.G.F. Kirsch

  2. Outline • Relative timing accuracy • Targets • Processing of data • Radio period of the pulsars • X-Ray period of the pulsars • Final results

  3. Fastest instrument on XMM-Newton Highest time resolution reached in timing and burst modes Pulsars used in analysis observed in these modes EPIC-pnRelative timing accuracy X-Ray Period = PXRadio Period = PR PR-PX P Relative Error PR PR

  4. Crab pulsar XMM-Newton performs two observations a year ofthe Crab • Distance: ~2.2kPc • Period: ~33ms Rev ID Obs. Time (ks) 0056 0122330801 22577 0234 0135730701 9999 0411 0153750201 4634 0411 0153750301 8999 0411 0153750401 8996 0411 0153750501 8999 0698 0160960201 28264 0700 0160960301 10172 0874 0160960401 14718 0874 0160960601 3983 0955 0160960701 8202 0955 0160960801 5000 0955 0160960901 8202

  5. PSR 0540 • Pulsar in the Large Magellanic Cloud • Distance: ~50kPc • Period: ~50ms Rev ID Obs.Time (ks) 0085 0125120201 17 Chandra, X-ray band, NASA

  6. PSR 1509-58 • Pulsar in the SNR MSH 15-2 • Distance: ~6kPc • Period: ~150ms Rev ID Obs.Time (ks) 0137 0128120401 10 Chandra, X-ray band, NASA

  7. PSR B1055-52 • One of the ‘three musketeers’ (PSR B1055, B0656,Geminga) • Distance: 0.5 – 1.5 kPc • Period: 197ms Rev ID Obs.Time (ks) 0187 0113050201 30 BeppoSax, 1-10keV, NASA

  8. data processing

  9. Radio periods of the pulsars B0540, B1509, B1055 Crab Automatic tool for Crab!

  10. X-ray period of the pulsars Fold the data over a range of test periods Pi: P3 First trial: radio period P2 Intensity P1 efsearch Time For each test period determine 2 of the fit of the folded light curve vs. a uniform distribution: Good period High 2 Bad period Small 2

  11. 2 distribution The weighted mean of the periods with 2 gives the best X-ray period FWHM  P2/T Reduced chi2 vs period for all pulsars

  12. Folded light curves

  13. Relative timing accuracy for the Crab P/P P/P epoch (MJD) time base (log(sec)) P/P<3.10-8

  14. Relative timing accuracy for all pulsars P/P P/P Period (ms) Revolution

  15. Automatic tool available to check the relative timing accuracy for future Crab observations Future XMM-Newton observation of pulsars B0540 and B1509 in order to verify relative timing?? Absolute timing analysis: create a tool to check the absolute timing accuracy  geo-centre XMM data or barycentre radio data Things to do now…

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