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NRCO #71: preliminary analysis of MOS data

Mallorca, 8 April 2008 EPIC Calibration Meeting. NRCO #71: preliminary analysis of MOS data. Andrea Tiengo INAF, IASF-Milano. NRCO #71. 3 observations of Tycho SNR: 2007-12-30: medium MOS1: 17 ks MOS2: 19 ks 2008-01-01: CALmedium MOS1: 46 ks MOS2: 36 ks 2008-01-03: CALclosed

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NRCO #71: preliminary analysis of MOS data

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  1. Mallorca, 8 April 2008 EPIC Calibration Meeting NRCO #71:preliminary analysis of MOS data Andrea Tiengo INAF, IASF-Milano

  2. NRCO #71 3 observations of Tycho SNR: • 2007-12-30: medium MOS1: 17 ks MOS2: 19 ks • 2008-01-01: CALmedium MOS1: 46 ks MOS2: 36 ks • 2008-01-03: CALclosed MOS1: 26 ks MOS2: 26 ks A. Tiengo - Mallorca, 8 April 2008

  3. CALmedium: MOS2 image A. Tiengo - Mallorca, 8 April 2008

  4. MOS spectra A. Tiengo - Mallorca, 8 April 2008

  5. MOS spectra A. Tiengo - Mallorca, 8 April 2008

  6. CALmedium: Mn/Fe lines Mn Fe A. Tiengo - Mallorca, 8 April 2008

  7. CALmedium: Mn/Fe lines 5.8-6 keV 6.2-6.6 keV A. Tiengo - Mallorca, 8 April 2008

  8. Mn/Fe lines • Fe line shifted to higher energy • Same line width • Mn line shifted to higher energy • Mn line centroid and width much better constrained than Fe A. Tiengo - Mallorca, 8 April 2008

  9. Conclusions & future work In region illuminated by CAL source and Tycho SNR: • Mn line is narrower and more intense than Fe line • CAL source much better than SNR to constrain gain and CTI Will it be still true when CAL source intensity decayed? • Mn and Fe line centroids are significantly shifted • CAL source cannot be easily used to calibrate gain and CTI during normal sky observations Can CTI and gain be better constrained in a global spectral fit including all calibration source and astrophysical lines? A. Tiengo - Mallorca, 8 April 2008

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