The Timing Mode PSF Richard Saxton Maria Diaz

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The Timing Mode PSF Richard Saxton, Maria Diaz Trigo, Matteo Guainazzi XMM EPIC SOC

The Timing Mode PSF Richard Saxton, Maria Diaz Trigo, Matteo Guainazzi XMM EPIC SOC Richard Saxton Background, Operations & Calibration (BOC) meeting Mallorca, 30/03/09 -01/04/09

Columns in Timing mode XMM EPIC SOC Richard Saxton Background, Operations & Calibration (BOC)

Columns in Timing mode XMM EPIC SOC Richard Saxton Background, Operations & Calibration (BOC) meeting Mallorca, 30/03/09 -01/04/09

Current SAS: Flux per column Fit to Vela with: Const * wabs * plaw

Current SAS: Flux per column Fit to Vela with: Const * wabs * plaw XMM EPIC SOC Richard Saxton Background, Operations & Calibration (BOC) meeting Mallorca, 30/03/09 -01/04/09

SAS 8 arfgen - GX 339+4 (1000 c/s) All columns All – col 0

SAS 8 arfgen - GX 339+4 (1000 c/s) All columns All – col 0 All – col-1 to col+1 All – col-2 to col+2 All – col-3 to col+3 All – col-4 to col+4 XMM EPIC SOC Richard Saxton Background, Operations & Calibration (BOC) meeting Mallorca, 30/03/09 -01/04/09

SAS 8 arfgen - 1254 (600 c/s) 1254 XMM EPIC SOC Richard Saxton Background,

SAS 8 arfgen - 1254 (600 c/s) 1254 XMM EPIC SOC Richard Saxton Background, Operations & Calibration (BOC) meeting Mallorca, 30/03/09 -01/04/09

SAS 8: Add up annular contriutions XMM EPIC SOC Richard Saxton Background, Operations &

SAS 8: Add up annular contriutions XMM EPIC SOC Richard Saxton Background, Operations & Calibration (BOC) meeting Mallorca, 30/03/09 -01/04/09

New arfgen method: Integrate the PSF image XMM EPIC SOC Richard Saxton Background, Operations

New arfgen method: Integrate the PSF image XMM EPIC SOC Richard Saxton Background, Operations & Calibration (BOC) meeting Mallorca, 30/03/09 -01/04/09

Integrated PSF image technique XMM EPIC SOC Richard Saxton Background, Operations & Calibration (BOC)

Integrated PSF image technique XMM EPIC SOC Richard Saxton Background, Operations & Calibration (BOC) meeting Mallorca, 30/03/09 -01/04/09

Integrated PSF image technique +10% -10% Flux in inner 9 cols / flux in

Integrated PSF image technique +10% -10% Flux in inner 9 cols / flux in cols -4 to -2 and +2 to +4 XMM EPIC SOC Richard Saxton Background, Operations & Calibration (BOC) meeting Mallorca, 30/03/09 -01/04/09

Practical spectral fitting effects Spectrum NH=2. 3 E+22 Gauss = 6. 44 ke. V

Practical spectral fitting effects Spectrum NH=2. 3 E+22 Gauss = 6. 44 ke. V 1. 04 ke. V 0. 02 Disk_T = 2. 26 Bbod_T = 1. 06 Tbabs (gauss*diskbb*bbod) XMM EPIC SOC Richard Saxton Background, Operations & Calibration (BOC) meeting Mallorca, 30/03/09 -01/04/09

-10% NH=2. 3 E+22 Gauss = 6. 44 ke. V 1. 04 ke. V

-10% NH=2. 3 E+22 Gauss = 6. 44 ke. V 1. 04 ke. V Disk_T = 2. 26 Bbod_T = 1. 06 NH=2. 34 E+22 Gauss = 6. 55± 0. 03 0. 99± 0. 04 Disk_T = 2. 34± 0. 09 Original Spectrum Practical spectral fitting effects Ignore Inner 5 c * Ramp with extra at 6 ke. V +15% NH=2. 32 E+22 Gauss = 6. 42± 0. 04 1. 06± 0. 04 Disk_T = 2. 40± 0. 09 * Linear ramp -10% Ignore Inner 3 c +10% XMM EPIC SOC Richard Saxton Background, Operations & Calibration (BOC) meeting Mallorca, 30/03/09 -01/04/09

MKN 421 simple power-law test Excluding inner 3 columns gives a 15% decrease in

MKN 421 simple power-law test Excluding inner 3 columns gives a 15% decrease in measured flux. Slope is stable. XMM EPIC SOC Richard Saxton Background, Operations & Calibration (BOC) meeting Mallorca, 30/03/09 -01/04/09

Conclusions § Major problem with ARF in SAS 8 when inner columns are excluded

Conclusions § Major problem with ARF in SAS 8 when inner columns are excluded in timing mode observations. § New image integration technique fixes this § Residual problem at 15% level in flux if inner 3 cols excluded § Spectral parameters reasonably consistent so looking acceptable… XMM EPIC SOC Richard Saxton Background, Operations & Calibration (BOC) meeting Mallorca, 30/03/09 -01/04/09

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