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Swift-XRT spectra of GRB 081224

Last updated after receiving ObsID 00020094001, version 8

Data were analysed using HEASOFT version 6.35.2

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Time-averaged spectrum (T0 + 18096 to 30825 s)

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PC mode spectrum of Time-averaged

PC mode. Mean photon arrival: T0+25437 s

NH (Galactic)2.59 × 1020 cm-2
NH (intrinsic)3 (+6, -3) × 1021 cm-2
z of absorber0
Photon index2.9 (+2.3, -1.6)
Flux (0.3-10 keV)
(Observed)		1.83 (+2.71, -0.81) × 10-13 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)		5.2 (+1.00 × 1013, -2.3) × 10-13 erg cm-2 s-1
Counts to flux (obs)2.50 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)7.06 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?		8.42 (15)
Spectrum exposure3.6 ks