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Swift-XRT spectra of GRB 070808

Last updated after receiving ObsID 00287260003, version 22.

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Time-averaged spectrum (T0 + 118 to 77008 s)

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WT and PC mode spectra of GRB 070808

WT mode. Mean photon arrival: T0+126 s

NH (Galactic)3.1 × 1020 cm-2
NH (intrinsic)1.1 (+0.8, -0.6) × 1022 cm-2
z of absorber0
Photon index1.6 (+0.6, -0.6)
Flux (0.3-10 keV)
(Observed)
4.4 (+1.6, -1.1) × 10-10 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
6.4 (+3.3, -1.3) × 10-10 erg cm-2 s-1
Counts to flux (obs)6 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)9 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
83.57 (84)
Spectrum exposure15 s

PC mode. Mean photon arrival: T0+5750 s

NH (Galactic)3.1 × 1020 cm-2
NH (intrinsic)1.23 (+0.34, -0.30) × 1022 cm-2
z of absorber0
Photon index1.98 (+0.30, -0.28)
Flux (0.3-10 keV)
(Observed)
1.20 (+0.17, -0.15) × 10-12 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
2.33 (+0.68, -0.29) × 10-12 erg cm-2 s-1
Counts to flux (obs)5 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)10 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
209.97 (256)
Spectrum exposure20.7 ks

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Late Time spectrum (T0 + 5082 to 77008 s)

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PC mode spectrum of GRB 070808

PC mode. Mean photon arrival: T0+23595 s

NH (Galactic)3.1 × 1020 cm-2
NH (intrinsic)1.5 (+0.7, -0.6) × 1022 cm-2
z of absorber0
Photon index3.64 (+1.04, -0.85)
Flux (0.3-10 keV)
(Observed)
1.5 (+0.5, -0.3) × 10-13 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
2.3 (+9.8, -0.7) × 10-12 erg cm-2 s-1
Counts to flux (obs)2.7 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)4 × 10-10 erg cm-2 ct-1
W-stat (dof)
What's this?
42.52 (63)
Spectrum exposure19.0 ks

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