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23 July 2002

23 July 2002

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23 July 2002

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  1. 23 July 2002 Brian Dennis NASA/GSFC 26 July 2013

  2. 23 July 2002

  3. 23 July 2002

  4. 23 July 2013A1 and A3 Attenuator States Note 3 distinct peaks

  5. 23 July 2002 2vth + thick + broad Gaussian at 9.13 keV

  6. 23 July 2002First A1 to A3 transition Count-flux spectrum below ~6 keV stays flat independent of slope in the 11 to 20 keV range where the K-escape events originate. For K-escape to explain the counts below 5 keV, count flux at 3 keV should depend on count flux at 14 keV count flux at 5 keV should depend on count flux at 16 keV

  7. Detector Response MatrixCompton minimum = 0.01 x photopeak amplitude A1 Attenuator state A3 Attenuator state

  8. Detector Response MatrixCompton minimum = 1% of photopeak amplitude A1 Attenuator state A3 Attenuator state

  9. Compton MinimumMinimum Energy = 5 keV

  10. 23 July 2002Minimum Compton Continuum Probability (MCCP) MCCP = 1.e-4 MCCP = 5.e-5

  11. 23 July 2002Minimum Compton Continuum Probability (MCCP) MCCP = 5.e-5

  12. 23 July 2002Late A3 to A1 Transition

  13. K-Escape and Compton ChangesAttenuator State A1Interval #5

  14. K-Escape ChangesA3 Attenuator State Interval 6 Interval 31 Plotted absolute value of K-escape change since it is an increase in counts at energies below the germanium K-edge at 11 keV and a decrease above 11 keV.

  15. K-escape and Compton ChangesInterval 32 Compton minimum = 0.0 K-escape tweak = 1.1

  16. Germanium K-shell Energies kescape_tweak = 5 • Kα1 – 9.88 keV • Kα2 – 9.86 keV • Kβ1 – 10.98 keV • Kβ2 – 11.10 keV • Kβ3 – 10.975 keV • Kβ5 – 11.074 keV • K-edge – 11.1 keV • drm_mod(0) = 0.1 • drm_mod(1) = -0.19

  17. Germanium K-edge Energy • K-alpha – 9.88 keV • K-edge – 11.1 keV • kescape_tweak = 1.1 • drm_mod(0) = 0.6 • drm_mod(1) = -0.45 keV

  18. Energy Calibration

  19. 23 July 2002Compton_min = 1.e-4

  20. 23 July 2002Compton_min = 4e-3

  21. 23 July 2002Compton_min = 0.01

  22. 23 July 2002A3 to A1 Change

  23. 23 July 2002Compton_min = 0.01K-escape_tweak = 1.1

  24. 23 July 2002 Failure to fit Interval #6 kescape_tweak = 1.4 Excess counts below 6 keV

  25. 23 July 2002 Detector #4 Multitherm_pow Thick2 Albedo kescape_tweak = 1.4 10 keV peak FWHM <0.4 keV Fe abundance (fraction of coronal)

  26. 23 July 2002 Detector #4 Multitherm_pow Thick2 Albedo kescape_tweak = 1.4 10 keV peak FWHM <2 keV Fe abundance (fraction of coronal)

  27. 23 July 20013 DEM at 2 keV DEM at 2 keV Max. Temperature Gaussian Line Intensity DEM power-law index

  28. 23 July 2002thick2_norm Flux at 50 keV Flux at 50 keV Delta1 Fe Abundance Elow in keV

  29. 23 July 2002Fe Abundance

  30. 23 July 2002Ireland et al. ApJ, 769:89, 2013 • Interval: 00:30:00–00:30:20.250 UT • Energy: 15 to 500 keV • Energy bins: 90 • Detector #4

  31. Parameter ValuesIreland et al. ApJ, 769:89, 2013