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Swift-XRT spectra of GRB 080319B

Last updated after receiving ObsID 00306757031, version 18

Data were analysed using HEASOFT version 6.29

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The spectral fits assume a redshift: 0.94 (GCN 7444)

Jump to: Time-averaged|Late Time


Time-averaged spectrum (T0 + 64 to 30643 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+822 s

NH (Galactic)1.15 × 1020 cm-2
NH (intrinsic)1.41 (+0.11, -0.10) × 1021 cm-2
z of absorber0.94
Photon index1.699 (+0.011, -0.011)
Flux (0.3-10 keV)
(Observed)
4.09 (+0.03, -0.03) × 10-9 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
4.390 (+0.028, -0.028) × 10-9 erg cm-2 s-1
Counts to flux (obs)3.77 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)4.05 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
1037.35 (907)
Spectrum exposure1.7 ks

PC mode. Mean photon arrival: T0+13737 s

NH (Galactic)1.15 × 1020 cm-2
NH (intrinsic)1.3 (+0.6, -0.6) × 1021 cm-2
z of absorber0.94
Photon index1.73 (+0.06, -0.06)
Flux (0.3-10 keV)
(Observed)
3.44 (+0.15, -0.14) × 10-11 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
3.70 (+0.13, -0.13) × 10-11 erg cm-2 s-1
Counts to flux (obs)3.74 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)4.02 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
495.92 (533)
Spectrum exposure9.3 ks

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Late Time spectrum (T0 + 4948 to 30643 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+13737 s

NH (Galactic)1.15 × 1020 cm-2
NH (intrinsic)1.3 (+0.6, -0.6) × 1021 cm-2
z of absorber0.94
Photon index1.73 (+0.06, -0.06)
Flux (0.3-10 keV)
(Observed)
3.44 (+0.15, -0.14) × 10-11 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
3.70 (+0.13, -0.13) × 10-11 erg cm-2 s-1
Counts to flux (obs)3.74 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)4.02 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
495.92 (533)
Spectrum exposure9.3 ks

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