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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)3.2 × 1021 cm-2
NH (intrinsic)0 (+1.6 × 1023, -0) cm-2
z of absorber3.758
Photon index2.01 (+1.02, -0.48)
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 (+1.87, -0.85) × 10-10 erg cm-2 s-1
Counts to flux (obs)3 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)5 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
13.97 (27)
Spectrum exposure9 s

PC mode. Mean photon arrival: T0+11063 s

NH (Galactic)3.2 × 1021 cm-2
NH (intrinsic)0 (+5 × 1021, -0) cm-2
z of absorber3.758
Photon index2.03 (+0.08, -0.07)
Flux (0.3-10 keV)
(Observed)
3.51 (+0.20, -0.17) × 10-12 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
5.30 (+0.27, -0.24) × 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?
381.21 (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 GRB 130408A

PC mode. Mean photon arrival: T0+15404 s

NH (Galactic)3.2 × 1021 cm-2
NH (intrinsic)0 (+8 × 1021, -0) cm-2
z of absorber3.758
Photon index2.189 (+0.105, -0.089)
Flux (0.3-10 keV)
(Observed)
2.06 (+0.14, -0.15) × 10-12 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
3.40 (+0.20, -0.19) × 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?
279.79 (348)
Spectrum exposure18.8 ks

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