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Swift-XRT spectra of GRB 130131B

Last updated after receiving ObsID 00547420001, version 3.

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Time-averaged spectrum (T0 + 113 to 12110 s)

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PC mode spectrum of GRB 130131B

PC mode. Mean photon arrival: T0+3153 s

NH (Galactic)3.1 × 1020 cm-2
NH (intrinsic)4.8 (+1.9, -1.6) × 1021 cm-2
z of absorber0
Photon index2.04 (+0.31, -0.29)
Flux (0.3-10 keV)
(Observed)
4.5 (+0.8, -0.6) × 10-12 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
7.58 (+1.82, -0.99) × 10-12 erg cm-2 s-1
Counts to flux (obs)4 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)7 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
159.85 (196)
Spectrum exposure5.1 ks

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Late Time spectrum (T0 + 4000 to 12110 s)

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PC mode spectrum of GRB 130131B

PC mode. Mean photon arrival: T0+6593 s

NH (Galactic)3.1 × 1020 cm-2
NH (intrinsic)4.3 (+3.0, -2.3) × 1021 cm-2
z of absorber0
Photon index2.0 (+0.5, -0.4)
Flux (0.3-10 keV)
(Observed)
1.40 (+0.38, -0.29) × 10-12 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
2.2 (+0.9, -0.4) × 10-12 erg cm-2 s-1
Counts to flux (obs)4 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)6 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
77.46 (112)
Spectrum exposure4.4 ks

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