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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)3.06 × 1020 cm-2
NH (intrinsic)9 (+7, -5) × 1021 cm-2
z of absorber0
Photon index1.6 (+0.6, -0.6)
Flux (0.3-10 keV)
(Observed)
4.2 (+1.5, -1.1) × 10-10 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
5.9 (+2.6, -1.2) × 10-10 erg cm-2 s-1
Counts to flux (obs)5.55 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)7.88 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
85.23 (89)
Spectrum exposure15 s

PC mode. Mean photon arrival: T0+5755 s

NH (Galactic)3.06 × 1020 cm-2
NH (intrinsic)1.22 (+0.35, -0.29) × 1022 cm-2
z of absorber0
Photon index1.98 (+0.30, -0.28)
Flux (0.3-10 keV)
(Observed)
1.21 (+0.17, -0.15) × 10-12 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
2.33 (+0.67, -0.21) × 10-12 erg cm-2 s-1
Counts to flux (obs)5.16 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)9.91 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
212.20 (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 Late Time

PC mode. Mean photon arrival: T0+23616 s

NH (Galactic)3.06 × 1020 cm-2
NH (intrinsic)1.4 (+0.8, -0.5) × 1022 cm-2
z of absorber0
Photon index3.5 (+0.9, -0.6)
Flux (0.3-10 keV)
(Observed)
1.5 (+0.4, -0.4) × 10-13 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
1.7 (+3.4, -0.4) × 10-12 erg cm-2 s-1
Counts to flux (obs)2.83 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)3.26 × 10-10 erg cm-2 ct-1
W-stat (dof)
What's this?
41.51 (64)
Spectrum exposure19.0 ks

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