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Swift-XRT spectra of GRB 130408A

Last updated after receiving ObsID 00553132009, version 7.

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The spectral fits assume a redshift: 3.758 (GCN 14365)

Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 153 to 63622 s)

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WT and PC mode spectra of GRB 130408A

WT mode. Mean photon arrival: T0+157 s

NH (Galactic)3.20 × 1021 cm-2
NH (intrinsic)0 (+1.70 × 1023, -0) cm-2
z of absorber3.758
Photon index2.00 (+1.05, -0.49)
Flux (0.3-10 keV)
(Observed)
1.3 (+0.6, -0.5) × 10-10 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
1.97 (+2.03, -0.74) × 10-10 erg cm-2 s-1
Counts to flux (obs)3.36 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)5.13 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
14.16 (27)
Spectrum exposure9 s

PC mode. Mean photon arrival: T0+11068 s

NH (Galactic)3.20 × 1021 cm-2
NH (intrinsic)0 (+5.38 × 1021, -0) cm-2
z of absorber3.758
Photon index1.999 (+0.104, -0.054)
Flux (0.3-10 keV)
(Observed)
3.58 (+0.20, -0.24) × 10-12 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
5.34 (+0.25, -0.24) × 10-12 erg cm-2 s-1
Counts to flux (obs)3.74 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)5.58 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
386.70 (417)
Spectrum exposure19.4 ks

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Late Time spectrum (T0 + 4001 to 63622 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+15404 s

NH (Galactic)3.20 × 1021 cm-2
NH (intrinsic)0 (+9.29 × 1021, -0) cm-2
z of absorber3.758
Photon index2.165 (+0.126, -0.074)
Flux (0.3-10 keV)
(Observed)
2.08 (+0.14, -0.16) × 10-12 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
3.41 (+0.21, -0.18) × 10-12 erg cm-2 s-1
Counts to flux (obs)3.41 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)5.57 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
280.33 (348)
Spectrum exposure18.8 ks

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