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A.Garcia, ESAC

Spectral effects

of PSF core excisting

Madrid, 24. March 2009

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1. Introduction

a) 3D PSF without pile-up b) 3D Pile-up PSF

• Goal of the project: verify that the results of spectral parameters analysis do not depend on the extraction region.

• If there is pile-up: extraction of the core. But... which is the impact?? what are the consequences??

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Method:

• Selection of a circular region and extract spectrum from all different annuli

• Spectral fitting for all the individual spectrum

• Compare results for different annuli within

•(a) full band

•(b) narrow bands

• Connection to XCAL archive:

•source and background region

•model for fitting the spectra.

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Expectations:

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Results: 3C273

Absorbed double powerlaw model

(a) 0126700301: rev.0094 (b) 0414190601: rev. 1837

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Narrow energy bands: 0.15 – 0.33 eV

(a) 0126700301 (b) 0414190601

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Narrow energy bands: 0.33 – 0.54

(a) 0126700301 (b) 0414190601

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Narrow energy bands: 0.54 – 0.85 eV

(a) 0126700301 (b) 0414190601

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Narrow energy bands: 0.54 – 0.85 eV

(a) 0126700301 (b) 0414190601

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Narrow energy bands: 0.85 – 2.0 eV

(a) 0126700301 (b) 0414190601

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Narrow energy bands: 2.0 – 4.5 eV

(a) 0126700301 (b) 0414190601

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Narrow energy bands: 4.5 – 10.0 eV

(a) 0126700301 (b) 0414190601

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RXJ 1856 0412600101

Complete band: 0.15 – 0.85 eV

Absorbed single black body model

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RXJ 1856 0412600101

narrow band: 0.15-0.33 eV

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RXJ 1856 0412600101

narrow band: 0.33 - 0.54 eV

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RXJ 1856 0412600101

narrow band: 0.54 - 0.85 eV

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1H0414+009 0161160101

• Extraction for different outer radios

MOS1 region PN region

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Results: 3C2731H0414+009: 0161160101 complet band1H0414+009: 0161160101 complet band

(a) outer radio: 800(a) outer radio: 800 (b) outer radio:1500(b) outer radio:1500

Absorbed powerlaw model

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1H0414+009: 0161160101 1H0414+009: 0161160101 narrow energy band: 0.15-0.33 eVnarrow energy band: 0.15-0.33 eV

(a) outer radio: 800(a) outer radio: 800 (b) outer (b) outer radio:1500radio:1500

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1H0414+009: 0161160101 1H0414+009: 0161160101 narrow energy band: 0.33-0.54 eVnarrow energy band: 0.33-0.54 eV

(a) outer radio: 800(a) outer radio: 800 (b) outer radio:1500(b) outer radio:1500

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1H0414+009: 0161160101 1H0414+009: 0161160101 narrow energy band: 0.54-0.85 eVnarrow energy band: 0.54-0.85 eV

(a) outer radio: 800(a) outer radio: 800 (b) outer radio:1500(b) outer radio:1500

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1H0414+009: 0161160101 1H0414+009: 0161160101 narrow energy band: 0.85-2.0 eVnarrow energy band: 0.85-2.0 eV

(a) outer radio: 800(a) outer radio: 800 (b) outer radio:1500(b) outer radio:1500

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1H0414+009: 0161160101 1H0414+009: 0161160101 narrow energy band: 2.0-4.5 eVnarrow energy band: 2.0-4.5 eV

(a) outer radio: 800(a) outer radio: 800 (b) outer radio:1500(b) outer radio:1500

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Conclusions

• We see changes of spectral parameters dependent on the source region definition.

• Interpretation:

• Reasons:

???

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Outlook

(a) Current model (b) New 2-D PSF model