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Swift-XRT spectra of GRB 100909A

Last updated after receiving ObsID 00020147002, version 6

Data were analysed using HEASOFT version 6.32

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Time-averaged spectrum (T0 + 11750 to 25841 s)

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PC mode spectrum of Time-averaged

PC mode. Mean photon arrival: T0+17364 s

NH (Galactic)4.20 × 1021 cm-2
NH (intrinsic)2.7 (+8.1, -2.7) × 1021 cm-2
z of absorber0
Photon index2.2 (+0.9, -0.7)
Flux (0.3-10 keV)
(Observed)		3.5 (+1.6, -1.0) × 10-13 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)		7.1 (+12.5, -2.6) × 10-13 erg cm-2 s-1
Counts to flux (obs)3.90 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)7.98 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?		47.87 (43)
Spectrum exposure7.7 ks