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Swift-XRT spectra of GRB 120404A

Last updated after receiving ObsID 00519380006, version 11.

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The spectral fits assume a redshift: 2.87 (GCN 13217)

Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 136 to 33830 s)

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WT and PC mode spectra of GRB 120404A

WT mode. Mean photon arrival: T0+177 s

NH (Galactic)4.0 × 1020 cm-2
NH (intrinsic)0 (+6 × 1021, -0) cm-2
z of absorber2.87
Photon index1.645 (+0.140, -0.079)
Flux (0.3-10 keV)
(Observed)
3.36 (+0.25, -0.32) × 10-10 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
3.58 (+0.24, -0.27) × 10-10 erg cm-2 s-1
Counts to flux (obs)4 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)4 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
269.78 (357)
Spectrum exposure99 s

PC mode. Mean photon arrival: T0+4488 s

NH (Galactic)4.0 × 1020 cm-2
NH (intrinsic)7 (+6, -6) × 1021 cm-2
z of absorber2.87
Photon index1.82 (+0.12, -0.11)
Flux (0.3-10 keV)
(Observed)
7.1 (+0.6, -0.5) × 10-12 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
8.1 (+0.5, -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)4 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
335.31 (355)
Spectrum exposure7.8 ks

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Late Time spectrum (T0 + 4740 to 33830 s)

Download spectral files for Late Time spectrum.

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PC mode spectrum of GRB 120404A

PC mode. Mean photon arrival: T0+7621 s

NH (Galactic)4.0 × 1020 cm-2
NH (intrinsic)9 (+9, -8) × 1021 cm-2
z of absorber2.87
Photon index1.99 (+0.17, -0.16)
Flux (0.3-10 keV)
(Observed)
3.1 (+0.3, -0.3) × 10-12 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
3.61 (+0.33, -0.16) × 10-12 erg cm-2 s-1
Counts to flux (obs)3 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)4 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
251.88 (252)
Spectrum exposure6.6 ks

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