1. Isabel Caballero, Anne Wellbrock Page 1 XMM-Newton ESAC XMM-Newton EPIC relative timing analysis Isabel Caballero Anne Wellbrock M.G.F. Kirsch

2. Isabel Caballero, Anne Wellbrock Page 2 XMM-Newton ESACOutline 1.Relative timing accuracy 2.Targets 3.Processing of data 4.Radio period of the pulsars 5.X-Ray period of the pulsars 6.Final results

3. Isabel Caballero, Anne Wellbrock Page 3 XMM-Newton ESAC EPIC-pn Relative timing accuracy  Fastest instrument on XMM- Newton  Highest time resolution reached in timing and burst modes  Pulsars used in analysis observed in these modes P R -P X PRPR PRPR PP Relative Error X-Ray Period = P X Radio Period = P R

4. Isabel Caballero, Anne Wellbrock Page 4 XMM-Newton ESAC Crab pulsar   Distance: ~2.2kPc   Period: ~33ms Rev ID Obs. Time (ks) 0056 012233080122577 0234 0135730701 9999 0411 0153750201 4634 0411 0153750301 8999 0411 0153750401 8996 0411 0153750501 8999 0698 016096020128264 0700 016096030110172 0874 016096040114718 0874 0160960601 3983 0955 0160960701 8202 0955 0160960801 5000 0955 0160960901 8202 XMM-Newton performs two observations a year of the Crab

5. Isabel Caballero, Anne Wellbrock Page 5 XMM-Newton ESAC PSR 0540 Rev ID Obs.Time (ks) 0085 0125120201 17 Pulsar in the Large Magellanic Cloud Distance: ~50kPc Period: ~50ms Chandra, X-ray band, NASA

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

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

8. Isabel Caballero, Anne Wellbrock Page 8 XMM-Newton ESAC data processing

9. Isabel Caballero, Anne Wellbrock Page 9 XMM-Newton ESAC Radio periods of the pulsars Crab B0540, B1509, B1055 Automatic tool for Crab!

10. Isabel Caballero, Anne Wellbrock Page 10 XMM-Newton ESAC P1P1 P3P3 P2P2 efsearch Fold the data over a range of test periods Pi: X-ray period of the pulsars First trial: radio period Intensity Time Good period High  2 Small  2 Bad period For each test period determine 2 of the fit of the folded light curve vs. a uniform distribution:

11. Isabel Caballero, Anne Wellbrock Page 11 XMM-Newton ESAC 2 distribution The weighted mean of the periods with  2 gives the best X-ray period FWHM  P 2 /T Reduced chi2 vs period for all pulsars

12. Isabel Caballero, Anne Wellbrock Page 12 XMM-Newton ESAC Folded light curves

13. Isabel Caballero, Anne Wellbrock Page 13 XMM-Newton ESAC Relative timing accuracy for the Crab P/P<3.10 -8 epoch (MJD) time base (log(sec)) P/P

14. Isabel Caballero, Anne Wellbrock Page 14 XMM-Newton ESAC Relative timing accuracy for all pulsars P/P Period (ms) P/P Revolution

15. Isabel Caballero, Anne Wellbrock Page 15 XMM-Newton ESAC Things to do now… 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