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Comparison of RGS Model for 1E0102.2-7219 to the HETG data: BI CCD CTI Correction for ACIS

This study compares the RGS model for 1E0102.2-7219 to the HETG data and explores the use of BI CCD CTI correction for ACIS. The results show promising agreement between the models.

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Comparison of RGS Model for 1E0102.2-7219 to the HETG data: BI CCD CTI Correction for ACIS

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  1. Comparison of RGS Model for 1E0102.2-7219 to the HETG data BI CCD CTI Correction for ACIS Paul Plucinsky, Dan Dewey, & Joseph DePasquale

  2. Gratuitous Pretty Pictures of E0102 RGS Spectrum (Pollock 2006) S3 Summed Data ~100 ks Objective: develop a spectral model which can be used by RGS, HETG, EPIC & ACIS, etc.

  3. What’s New Since the Iceland 2006 Meeting? • Pollock’s model based on the RGS data has been used by Dan Dewy of the HETG team to compare to the HETG data • Dan adopted the RGS spectral model, including the normalizations • Dan developed a spatial model for the structure of the remnant • He created simulated datasets to compare the against the MEG and HEG data from the Chandra HETG The overall agreement is encouraging !!! • Good agreement on the bright lines, some disagreement on the weaker lines All of the following work has been done by Dan, many thanks !!!

  4. Dewey Spatial and Spectral Model

  5. MEG minus 1st order MgXI NeX NeIX OVIII OVII Simulation Comparison KS test

  6. MEG plus 1st order MgXI NeX NeIX OVIII OVII Simulation Comparison KS test

  7. HEG minus 1st order MgXI NeX NeIX Simulation Comparison KS test

  8. HEG plus 1st order MgXI NeX NeIX Simulation Comparison KS test

  9. Where Do We Go From Here ? • Dewey analysis needs to be updated with latest response files for HRMA/ACIS/HETG • Line-based analysis needs to be updated with the latest response files for HRMA/HETG/ACIS • RGS data need to be re-analyzed with new background model for RGS • RGS and HETG teams agree on a model well before the IACHEC meeting in California • ACIS, MOS, and pn use the new model to fit the CCD spectra

  10. 2. CTI Correction in CIAO for S3 and S1 • Penn State CTI corrector available since 2001 • CXC response products for S1 and S3 used a position-dependent gain correction which recovers the true values of the PHs but does not improve the spectral resolution • S3 and S1 data will now be CTI-corrected in the events files provided to GOs • All TEN CCDs will be CTI-corrected as of CIAO and CALDB release in December 2006 • small, but significant improvement in spectral resolution and QE uniformity

  11. BI CTI correction: PH vs. Row # Current CALDB: no CTI correction Prototype CALDB: CTI correction

  12. BI CTI correction: PH vs. Row #

  13. S3 CTI correction: Mn-K at the Aimpoint No CTI correction: FWHM~162 eV With CTI correction: FWHM~151 eV

  14. S3 CTI correction: Mn-K at the Top No CTI correction: FWHM~182 eV With CTI correction: FWHM~157 eV

  15. Current CALDB No CTI correction: E0102 on S3 Red Chi= 1.44

  16. BI CTI correction: E0102 on S3 Red Chi= 1.10

  17. BI CTI correction: E0102 on S1 Red Chi= 1.57

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