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XMM EPIC MOS Jenny Carter EPIC Calibration Mallorca, 26 th -27 th Oct. 2006 Cross calibration of RGS and MOS using Zeta Puppis Jenny.

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Presentation on theme: "XMM EPIC MOS Jenny Carter EPIC Calibration Mallorca, 26 th -27 th Oct. 2006 Cross calibration of RGS and MOS using Zeta Puppis Jenny."— Presentation transcript:

1 XMM EPIC MOS Jenny Carter (jac48@star.le.ac.uk) EPIC Calibration Mallorca, 26 th -27 th Oct. 2006 Cross calibration of RGS and MOS using Zeta Puppis Jenny Carter, University of Leicester

2 XMM EPIC MOS Jenny Carter (jac48@star.le.ac.uk) EPIC Calibration Mallorca, 26 th -27 th Oct. 2006 Aims Check low energy - gain relationship, currently linear extrapolation Look at cross-calibration between RGS and MOS, checking energy scales and fluxes How: use Zeta Puppis, other line rich sources ADC Al Mn Observed energy

3 XMM EPIC MOS Jenny Carter (jac48@star.le.ac.uk) EPIC Calibration Mallorca, 26 th -27 th Oct. 2006 Observations used Revn.Obs. ID.Exposure (ks)EPIC Instruments 0091009581030157.35MOS1 0156009581040140.55MOS1, 2, pn 0538015716050142.28MOS1, 2, pn 0542015716090143.65MOS1, 2, pn 0552015716110138.94MOS1, 2, pn 0636015936010169.16MOS1, 2, pn 0795015936030161.29MOS1, 2, pn 0903015936040163.04MOS1, 2, pn 0980015936050164.18MOS1, 2, pn 1071015936070130.06MOS1, 2, pn 1096015936090153.53MOS1, 2, pn 1164015936110152.91MOS1, 2, pn

4 XMM EPIC MOS Jenny Carter (jac48@star.le.ac.uk) EPIC Calibration Mallorca, 26 th -27 th Oct. 2006 Analysis process Fit RGS spectra Find best model Apply these models to MOS data Fit sections of the spectra RGS analysis Isolate section of spectra Tie lines together in group to subject line, find new E Tie cont. normalisation to subject line Calculate flux of section Compare RGS to MOS data

5 XMM EPIC MOS Jenny Carter (jac48@star.le.ac.uk) EPIC Calibration Mallorca, 26 th -27 th Oct. 2006 Analysis - stage 1 for RGS Process: rgsproc for each obs. with SAS 7.0.0 Xspec: apply model model phabs * (gaussian + gaussian … (36) + brems) fit and find best model for obs. save this model for use with MOS

6 XMM EPIC MOS Jenny Carter (jac48@star.le.ac.uk) EPIC Calibration Mallorca, 26 th -27 th Oct. 2006 Stage 1 results for RGS Flux trends with revn. Combined band 0.3 – 2.0 keV Fitted using REGRESS regression fit in IDL to get trend over time BandSlope% drop over 1000 revns 0.3 – 2.0 keV-1.242 -158.9 0.3 – 0.8 keV-7.078 -1611.2 0.8 – 2.0 keV-4.879 -166.4

7 XMM EPIC MOS Jenny Carter (jac48@star.le.ac.uk) EPIC Calibration Mallorca, 26 th -27 th Oct. 2006

8 XMM EPIC MOS Jenny Carter (jac48@star.le.ac.uk) EPIC Calibration Mallorca, 26 th -27 th Oct. 2006

9 XMM EPIC MOS Jenny Carter (jac48@star.le.ac.uk) EPIC Calibration Mallorca, 26 th -27 th Oct. 2006

10 XMM EPIC MOS Jenny Carter (jac48@star.le.ac.uk) EPIC Calibration Mallorca, 26 th -27 th Oct. 2006 Analysis – stage 2 for MOS Apply the best RGS models for each revn. found to MOS data, as produced by Steve with SAS 7.0.0 Concentrate on certain lines, selected to cover a range of energies SelectionRGS line (~keV) under study 10.432 20.801 31.023 41.856 Tie very close lines together and cont. norm

11 XMM EPIC MOS Jenny Carter (jac48@star.le.ac.uk) EPIC Calibration Mallorca, 26 th -27 th Oct. 2006 Fit examples – RGS and MOS Line 1 Line 2

12 XMM EPIC MOS Jenny Carter (jac48@star.le.ac.uk) EPIC Calibration Mallorca, 26 th -27 th Oct. 2006 Lines 3 and 4 Line 3 Line 4

13 XMM EPIC MOS Jenny Carter (jac48@star.le.ac.uk) EPIC Calibration Mallorca, 26 th -27 th Oct. 2006 Stage 2 – results for MOS Line energy differences between subject line for RGS and MOS Flux differences between RGS and MOS over selected energy ranges LineRGS average line energy (keV) MOS1 average line energy (keV) MOS2 average line energy (keV) 10.43180.43320.4318 20.8271 31.02341.02761.0285 41.86141.86261.8614

14 XMM EPIC MOS Jenny Carter (jac48@star.le.ac.uk) EPIC Calibration Mallorca, 26 th -27 th Oct. 2006 Line energy differences – line 1, MOS1

15 XMM EPIC MOS Jenny Carter (jac48@star.le.ac.uk) EPIC Calibration Mallorca, 26 th -27 th Oct. 2006 Line energy differences – line 2, MOS1

16 XMM EPIC MOS Jenny Carter (jac48@star.le.ac.uk) EPIC Calibration Mallorca, 26 th -27 th Oct. 2006 Line energy differences – line 3, MOS1

17 XMM EPIC MOS Jenny Carter (jac48@star.le.ac.uk) EPIC Calibration Mallorca, 26 th -27 th Oct. 2006 Line energy differences – line 4, MOS1

18 XMM EPIC MOS Jenny Carter (jac48@star.le.ac.uk) EPIC Calibration Mallorca, 26 th -27 th Oct. 2006 Line energy differences – line 1, MOS2

19 XMM EPIC MOS Jenny Carter (jac48@star.le.ac.uk) EPIC Calibration Mallorca, 26 th -27 th Oct. 2006 Line energy differences – line 2, MOS2

20 XMM EPIC MOS Jenny Carter (jac48@star.le.ac.uk) EPIC Calibration Mallorca, 26 th -27 th Oct. 2006 Line energy differences – line 3, MOS2

21 XMM EPIC MOS Jenny Carter (jac48@star.le.ac.uk) EPIC Calibration Mallorca, 26 th -27 th Oct. 2006 Line energy differences – line 4, MOS2

22 XMM EPIC MOS Jenny Carter (jac48@star.le.ac.uk) EPIC Calibration Mallorca, 26 th -27 th Oct. 2006 Mean fluxes for RGS and MOS Line and E-range (keV) RGS average flux (ergs cm -2 s -1 ) MOS1 average flux (ergs cm -2 s -1 ) MOS2 average flux (ergs cm -2 s -1 ) 1; 0.34 – 0.471.841×10 -12 1.968×10 -12 1.898×10 -12 2; 0.76 – 0.902.368×10 -12 2.497×10 -12 2.693×10 -12 3; 0.95 – 1.121.460×10 -12 1.549×10 -12 1.606×10 -12 4; 1.65 – 2.008.471×10 -13 7.321×10 -13 7.669×10 -13 Although generally downward trend seen

23 XMM EPIC MOS Jenny Carter (jac48@star.le.ac.uk) EPIC Calibration Mallorca, 26 th -27 th Oct. 2006 Flux differences RGS and MOS – line 1 Energy band: 0.34 – 0.47 keV

24 XMM EPIC MOS Jenny Carter (jac48@star.le.ac.uk) EPIC Calibration Mallorca, 26 th -27 th Oct. 2006 Flux differences RGS and MOS – line 2 Energy band: 0.76 – 0.90 keV

25 XMM EPIC MOS Jenny Carter (jac48@star.le.ac.uk) EPIC Calibration Mallorca, 26 th -27 th Oct. 2006 Flux differences RGS and MOS – line 3 Energy band: 0.95 – 1.12 keV

26 XMM EPIC MOS Jenny Carter (jac48@star.le.ac.uk) EPIC Calibration Mallorca, 26 th -27 th Oct. 2006 Flux differences RGS and MOS – line 4 Energy band: 1.65 – 2.0 keV

27 XMM EPIC MOS Jenny Carter (jac48@star.le.ac.uk) EPIC Calibration Mallorca, 26 th -27 th Oct. 2006 Tycho pn1.858 ± 0.001 MOS11.859 ± 0.002 MOS21.859 ± 0.002 Checking around the silicon line with the pn

28 XMM EPIC MOS Jenny Carter (jac48@star.le.ac.uk) EPIC Calibration Mallorca, 26 th -27 th Oct. 2006 Conclusions and future plans RGS flux decrease over time as shown by long-term blazar comparison, shown by Andy Pollock at the XMM-Newton Users Group MOS E-scale in agreement with RGS although systematic offset at ~1 keV of about 2-3 eV Higher energy line too weak in RGS to use as a calibration for MOS E-scale Scatter in flux values for both RGS and MOS, especially at low energies Flux of MOS generally above RGS values apart from highest energies Would like to look at other sources IES0102, Tycho and Procyon

29 XMM EPIC MOS Jenny Carter (jac48@star.le.ac.uk) EPIC Calibration Mallorca, 26 th -27 th Oct. 2006

30 XMM EPIC MOS Jenny Carter (jac48@star.le.ac.uk) EPIC Calibration Mallorca, 26 th -27 th Oct. 2006 Procyon

31 XMM EPIC MOS Jenny Carter (jac48@star.le.ac.uk) EPIC Calibration Mallorca, 26 th -27 th Oct. 2006

32 XMM EPIC MOS Jenny Carter (jac48@star.le.ac.uk) EPIC Calibration Mallorca, 26 th -27 th Oct. 2006 Brems. temperature with revn.

33 XMM EPIC MOS Jenny Carter (jac48@star.le.ac.uk) EPIC Calibration Mallorca, 26 th -27 th Oct. 2006 Brems temperature contours

34 XMM EPIC MOS Jenny Carter (jac48@star.le.ac.uk) EPIC Calibration Mallorca, 26 th -27 th Oct. 2006 Brems temperature fixed or free Fit again, this time keeping the Brems. component fixed and look at c-stat (frozen - red)

35 XMM EPIC MOS Jenny Carter (jac48@star.le.ac.uk) EPIC Calibration Mallorca, 26 th -27 th Oct. 2006 Normalisation ratios – to line 1 and 2

36 XMM EPIC MOS Jenny Carter (jac48@star.le.ac.uk) EPIC Calibration Mallorca, 26 th -27 th Oct. 2006 Normalisation ratios, to line 1

37 XMM EPIC MOS Jenny Carter (jac48@star.le.ac.uk) EPIC Calibration Mallorca, 26 th -27 th Oct. 2006 ADC Al Mn Observed energy

38 XMM EPIC MOS Jenny Carter (jac48@star.le.ac.uk) EPIC Calibration Mallorca, 26 th -27 th Oct. 2006 Analysis – stage 2 - obsolete Apply the best models found to MOS data Freeze phabs and Brems. Concentrate on certain lines, selected to cover a range of energies SelectionRGS line (~keV)Range studied (keV) 10.4320.40 – 0.57 20.8010.65 – 0.92 31.0230.92 – 1.25

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