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Swift-XRT spectra of GRB 091208B

Last updated after receiving ObsID 00378559013, version 9

Data were analysed using HEASOFT version 6.32

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The spectral fits assume a redshift: 1.063 (GCN 10263)

Jump to: Time-averaged|Late Time


Time-averaged spectrum (T0 + 118 to 46280 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+124 s

NH (Galactic)5.75 × 1020 cm-2
NH (intrinsic)1.1 (+3.0, -1.0) × 1022 cm-2
z of absorber1.063
Photon index2.0 (+0.8, -0.6)
Flux (0.3-10 keV)
(Observed)
1.7 (+0.9, -0.6) × 10-10 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
2.42 (+2.06, -0.72) × 10-10 erg cm-2 s-1
Counts to flux (obs)2.99 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)4.21 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
33.01 (47)
Spectrum exposure11 s

PC mode. Mean photon arrival: T0+8550 s

NH (Galactic)5.75 × 1020 cm-2
NH (intrinsic)1.09 (+0.26, -0.24) × 1022 cm-2
z of absorber1.063
Photon index1.91 (+0.12, -0.12)
Flux (0.3-10 keV)
(Observed)
8.1 (+0.6, -0.6) × 10-12 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
1.11 (+0.07, -0.06) × 10-11 erg cm-2 s-1
Counts to flux (obs)3.80 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)5.21 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
344.91 (393)
Spectrum exposure9.5 ks

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Late Time spectrum (T0 + 5310 to 46280 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+14308 s

NH (Galactic)5.75 × 1020 cm-2
NH (intrinsic)1.1 (+0.3, -0.3) × 1022 cm-2
z of absorber1.063
Photon index1.85 (+0.16, -0.15)
Flux (0.3-10 keV)
(Observed)
4.3 (+0.4, -0.4) × 10-12 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
5.7 (+0.5, -0.4) × 10-12 erg cm-2 s-1
Counts to flux (obs)3.94 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)5.26 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
267.29 (315)
Spectrum exposure9.0 ks

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