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Swift-XRT spectra of GRB 130420B

Last updated after receiving ObsID 00553996002, version 5.

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Time-averaged spectrum (T0 + 58 to 39893 s)

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WT and PC mode spectra of GRB 130420B

WT mode. Mean photon arrival: T0+61 s

NH (Galactic)1.52 × 1020 cm-2
NH (intrinsic)2.2 (+6.7, -2.2) × 1021 cm-2
z of absorber0
Photon index2.1 (+1.8, -1.1)
Flux (0.3-10 keV)
(Observed)
4.2 (+4.7, -2.2) × 10-10 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
6.0 (+4.0, -2.7) × 10-10 erg cm-2 s-1
Counts to flux (obs)2.80 × 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?
21.42 (20)
Spectrum exposure7 s

PC mode. Mean photon arrival: T0+8614 s

NH (Galactic)1.52 × 1020 cm-2
NH (intrinsic)5 (+10, -5) × 1020 cm-2
z of absorber0
Photon index1.8 (+0.4, -0.3)
Flux (0.3-10 keV)
(Observed)
1.10 (+0.27, -0.21) × 10-12 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
1.23 (+0.22, -0.19) × 10-12 erg cm-2 s-1
Counts to flux (obs)3.63 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)4.06 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
78.29 (113)
Spectrum exposure6.3 ks

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Late Time spectrum (T0 + 4000 to 39893 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+8990 s

NH (Galactic)1.52 × 1020 cm-2
NH (intrinsic)4.9 (+10.1, -4.9) × 1020 cm-2
z of absorber0
Photon index1.8 (+0.4, -0.3)
Flux (0.3-10 keV)
(Observed)
1.04 (+0.27, -0.20) × 10-12 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
1.17 (+0.22, -0.19) × 10-12 erg cm-2 s-1
Counts to flux (obs)3.54 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)3.98 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
78.07 (105)
Spectrum exposure6.1 ks

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