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Swift-XRT spectra of GRB 090117

Last updated after receiving ObsID 00020097001, version 10

Data were analysed using HEASOFT version 6.32

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Time-averaged spectrum (T0 + 13698 to 31942 s)

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PC mode spectrum of Time-averaged

PC mode. Mean photon arrival: T0+17745 s

NH (Galactic)1.00 × 1022 cm-2
NH (intrinsic)1.8 (+1.8, -1.3) × 1022 cm-2
z of absorber0
Photon index2.5 (+1.0, -0.8)
Flux (0.3-10 keV)
(Observed)		9.2 (+3.2, -2.3) × 10-13 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)		3.8 (+13.9, -1.8) × 10-12 erg cm-2 s-1
Counts to flux (obs)5.53 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)2.25 × 10-10 erg cm-2 ct-1
W-stat (dof)
What's this?		58.74 (66)
Spectrum exposure5.9 ks