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Swift-XRT spectra of GRB 130131A

Last updated after receiving ObsID 00547407009, version 11.

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Time-averaged spectrum (T0 + 64 to 121264 s)

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WT and PC mode spectra of GRB 130131A

WT mode. Mean photon arrival: T0+238 s

NH (Galactic)1.51 × 1020 cm-2
NH (intrinsic)3.38 (+0.26, -0.25) × 1021 cm-2
z of absorber0
Photon index2.26 (+0.06, -0.06)
Flux (0.3-10 keV)
(Observed)
1.002 (+0.031, -0.030) × 10-9 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
1.77 (+0.05, -0.07) × 10-9 erg cm-2 s-1
Counts to flux (obs)3 × 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?
623.28 (605)
Spectrum exposure235 s

PC mode. Mean photon arrival: T0+5519 s

NH (Galactic)1.51 × 1020 cm-2
NH (intrinsic)3.0 (+0.8, -0.7) × 1021 cm-2
z of absorber0
Photon index2.15 (+0.20, -0.19)
Flux (0.3-10 keV)
(Observed)
1.62 (+0.18, -0.16) × 10-12 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
2.60 (+0.25, -0.26) × 10-12 erg cm-2 s-1
Counts to flux (obs)3 × 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?
271.60 (271)
Spectrum exposure16.9 ks

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Late Time spectrum (T0 + 5324 to 121264 s)

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PC mode spectrum of GRB 130131A

PC mode. Mean photon arrival: T0+15982 s

NH (Galactic)1.51 × 1020 cm-2
NH (intrinsic)3.2 (+1.6, -1.3) × 1021 cm-2
z of absorber0
Photon index2.4 (+0.4, -0.4)
Flux (0.3-10 keV)
(Observed)
4.5 (+1.0, -0.8) × 10-13 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
8.5 (+1.7, -1.3) × 10-13 erg cm-2 s-1
Counts to flux (obs)3 × 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?
112.04 (117)
Spectrum exposure15.1 ks

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