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Swift-XRT spectra of GRB 070309

Last updated after receiving ObsID 00020050005, version 16

Data were analysed using HEASOFT version 6.32

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Time-averaged spectrum (T0 + 13909 to 114533 s)

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PC mode spectrum of Time-averaged

PC mode. Mean photon arrival: T0+45890 s

NH (Galactic)6.73 × 1021 cm-2
NH (intrinsic)0 (+6.29 × 1021, -0) cm-2
z of absorber0
Photon index6.4 (+2.3, -1.4)
Flux (0.3-10 keV)
(Observed)		1.78 (+1.00, -0.76) × 10-14 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)		2.2 (-2.1, -2.2) × 10-12 erg cm-2 s-1
Counts to flux (obs)1.57 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)1.96 × 10-9 erg cm-2 ct-1
W-stat (dof)
What's this?		21.40 (22)
Spectrum exposure23.6 ks