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Swift-XRT spectra of GRB 070311

Last updated after receiving ObsID 00020052008, version 20

Data were analysed using HEASOFT version 6.32

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Time-averaged spectrum (T0 + 7004 to 54915 s)

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PC mode spectrum of Time-averaged

PC mode. Mean photon arrival: T0+20666 s

NH (Galactic)3.79 × 1021 cm-2
NH (intrinsic)2.0 (+2.0, -1.7) × 1021 cm-2
z of absorber0
Photon index1.89 (+0.24, -0.23)
Flux (0.3-10 keV)
(Observed)		1.71 (+0.21, -0.18) × 10-12 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)		2.7 (+0.4, -0.3) × 10-12 erg cm-2 s-1
Counts to flux (obs)4.39 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)6.87 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?		279.03 (299)
Spectrum exposure18.8 ks