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Temporal &Spatial Dependency of the MOS RMF

Temporal &Spatial Dependency of the MOS RMF. 1ES0102-72. MOS1 Thin filter. 0447. MOS2 Thin filter. 0433. 0447. 1ES0102. 0.1-0.35 keV images ‘Good’ spectra – clean images ‘Bad spectra’ – bright ‘patch’. - Able to do spectral analysis of on- and off-‘patch’ regions. MOS1 Rev375.

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Temporal &Spatial Dependency of the MOS RMF

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  1. Temporal &Spatial Dependency of the MOS RMF 1ES0102-72

  2. MOS1 Thin filter 0447

  3. MOS2 Thin filter 0433 0447

  4. 1ES0102 0.1-0.35 keV images ‘Good’ spectra – clean images ‘Bad spectra’ – bright ‘patch’ - Able to do spectral analysis of on- and off-‘patch’ regions

  5. MOS1 Rev375 MOS1 Rev375 MOS1 Rev447 MOS2 Rev447 ‘patch’ ‘patch’ ‘non-patch’ ‘non-patch’

  6. MOS1 11 obs. 0065-0803 Only 0447 lies on MOS1 Boresight 0447 MOS1 Boresight

  7. MOS2 12 obs. 0065-0803 Only 0433 & 0447 lie on MOS2 Boresight 0433 0447 MOS2 Boresight

  8. - Investigate possible photon damage at boresights - Stacking of all-pattern, all-energy images from all imaging mode observations MOS1 (CCD1) 3249 Event Files 307501987 Events MOS2 (CCD1) 3223 Event Files 357647490 Events

  9. - Investigate possible photon damage at boresights - Comparison of boresight positions (pn/RGS prime) with stacked images (zoom) MOS1 MOS2 RGS prime 299,299 RGS prime 309,295 pn prime 315,291 pn prime 303,305 310 300 290 280 300 320 290 310

  10. Searching for ‘patch’ in other datasets/objects… N132DMos1 0.1-0.35 keV 0.35-0.55 keV 0.55-0.8 keV 0.8-2.0 keV 0283 Thin 0606 Med 0771 Thin No Thin filter, ‘On-Patch’ Observations 0828 Thin

  11. N132DMos2 0.1-0.35 keV 0.35-0.55 keV 0.55-0.8 keV 0.8-2.0 keV 0283 Thin 0606 Med 0771 Thin No Thin filter, ‘On-Patch’ Observations 0828 Thin

  12. N132D 0.1-0.35 keV 0.35-0.55 keV 0.55-0.8 keV 0.8-2.0 keV - Rev 0606 - Medium filter - ‘On-Patch’ M1 M1 smoothed M2 M2 smoothed

  13. 0.1-0.35 keV 0.35-0.55 keV 0.55-0.8 keV 0.8-2.0 keV N132DMos1 0474 - Medium filter 0538 0542 0552

  14. 0.1-0.35 keV 0.35-0.55 keV 0.55-0.8 keV 0.8-2.0 keV N132DMos2 0474 - Medium filter 0538 0542 0552

  15. - No spatial evidence for ‘patch’ found in N132D (larger remnant - more complex, spatially and spectrally - no thin-filter, on-boresight observations) - Other Objects? • Coma – Many observations – All Medium Filter • Tycho – 1 observation – Medium filter • Kepler – 1 observation – Thick filter • (No such features [spectral enhancements, spatial ‘patch’] seen in pn analysis - remnant however sometimes on CCD gap, or non-thin filter used)

  16. 1ES0102 - Proposed On-Boresight Raster Observation - Performed in Revs 894/900 4 observations: - 894 - 900a - 900b1 & 900b2 (flare-damaged) - 900c

  17. 0447

  18. 894-900 0447

  19. 0433 0447

  20. 894-900 433&447

  21. 0.1-0.4 keV - Models (continuum + multi-Gaussian) fitted to spectra in narrow energy bands - Fluxes calculated and compared (dotted lines show ±10% variation) - On-Axis observations (433, 447, 894, 900) show marked departures from mean 0.4-0.8 keV 0.8-1.15 keV

  22. - Zoom of 894-900 region (all on-axis)

  23. 1.15-2.0 keV - At higher energies, flux is very constant 2.0-6.0 keV - Across whole energy band, flux is quite well conserved 0.1-6.0 keV

  24. MOS1 in timing mode 0.1-0.35 keV RAWX/Y images M1(raw/smoothed) M2(raw/smoothed) from Revs. 433, 447, 894, 900(a,b1/2,c) - MOS2 patch is compact, stationary, distinct - MOS1 patch is fuzzier, not so distinct, more diffuse - Are able to compare ‘patch’ and ‘non-patch’ spectra ,as before…

  25. MOS1 Rev375 MOS1 Rev375 MOS1 Rev447 MOS2 Rev447 ‘patch’ ‘patch’ ‘non-patch’ ‘non-patch’

  26. M1 On-patch - peak ‘level’ (?) reached by rev 447 - little evolution thereafter 447 375 (off-axis)

  27. M1 Off-patch - low-moderate effect at rev 447 - moderate evolution thereafter 894 447 375 (off-axis)

  28. M2 On-patch - moderate effect at rev 433/447 (lower than M1) - moderate evolution (to peak level?) 447 375 (off-axis) 433

  29. M2 Off-patch - low (zero) effect at rev 433/447 - moderate evolution thereafter 375 (off-axis) 433 447

  30. On-patch – Off-patch M1 375 (off-axis) M2 375 (off-axis)

  31. On-patch – Off-patch M1 447 M2 447

  32. On-patch – Off-patch M1 894 M2 894

  33. On-patch – Off-patch M1 900a M2 900a

  34. On-patch – Off-patch M1 900c M2 900c

  35. Spatial Analysis of ‘Patch’ - Mosaic all ‘good’ off-axis sky (X/Y) images to obtain 0.1-0.35 keV images of ‘non-patch’ remnant - Using knowledge of remnant detector position and observation position angle, rotate and flip this image to correct RAWX/RAWY position & orientation for each ‘bad’ on-axis pointing - Subtract rotated/flipped image from each ‘bad’ on-axis RAWX/RAWY image (correcting for relative exposures) to obtain images of the remainder – the ‘patch’

  36. - M1 patch is bright, and quite large already at rev 447 - Outer regions become larger and even brighter at later times

  37. - M2 patch is not as bright as M1, and is initially compact - Outer regions become effected at later times

  38. Mosaics (raw & smoothed) of ‘patch’ images for MOS1

  39. Mosaics (raw & smoothed) of ‘patch’ images for MOS2

  40. - Patch is only visible when remnant illuminates the particular area of detector - 1ES0102 acts like a torchlight – Final correction is made for this

  41. New Boresights? MOS2 MOS1 Obvious places that are close, equidistant from pn/RGS boresights (and by pn-RGS boresight offset) and with relatively little photon impact

  42. Discussion: Dealing with ‘The Patch’? – - New Boresight(s)? - Spatio-temporal RMF? - Correct on photon-by-photon basis?

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