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XMM Newton cross calibration

This study evaluates cross-calibration for different sources using EPIC and RGS spectra fits, comparing spectral features and normalization constants. The analysis covers AGN, NS, Stars, SNR, and Clusters. Addressing EPIC and RGS instrumentation challenges, such as low energy problems and redistribution issues.

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XMM Newton cross calibration

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  1. XMM Newtoncross calibration M.G.F. Kirsch, B. Altieri, B.Chen, L. Metcalfe, A.M.T. Pollock, E. Brooks Pollock, M.J.S. Smith,

  2. cross calibration assessment • take various kinds of sources • fit: const(model) where: constpn=1, others free, and model parameters linked • continuum sources: EPIC spectra as start for simultaneous fits • line rich sources: RGS spectra as start for simultaneous fits • compare absolute normalization constants • compare relative spectral features targets • AGN (MK, AP) • Isolated NS (BC) • Stars (AP, MK) • SNR (MS, AP) • Clusters (EBP, BA) const_data1=1 const_data2=0.5 const_data3=0.4 const_data4=0.2 const_data5=0.1

  3. AGN PKS2155-304 rev. 545 PKS0558-504 rev. 153 pn SW Medium RGS1 RGS2 pn SW Medium MOS1 LW Thin MOS2 LW Thin RGS1 RGS2

  4. INS RXJ0806.4-4123 rev. 168 RXJ0720.4-3125 rev. 533

  5. stars zeta Puppis rev. 542 AB Dor rev. 266

  6. special-extended source • Use as EPIC extraction region the complete RGS apertures: • MOS1 : -2826 < DETX < 2993 • MOS2 -2876 < DETY < 2884 • pn: -3044 < DETY < 2929 • measure flux without vignetting correction • double BG correction applied filtering out low energy flaring for EPIC

  7. SNR: 1E0102-0719 rev. 447 pn LW Thin MOS1 LW Thin MOS2 LW Thin RGS1 RGS2

  8. clusters A1689 A2052

  9. cross normalization

  10. features in relative calibration • MOS low energy problem evolving with time • pn-redistribution problem • The old fellows for RGS and EPIC • Si-edge • Au-edge MCG-6-30-15 EPIC pn (red) and combined MOS1+MOS2 (blue) spectra Zeta Puppis RGS model folded through pn response Pers. Com. Sembay Fabian et al.

  11. Where is the missing flux?

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