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Swift-XRT spectra of GRB 121211A

Last updated after receiving ObsID 00541200004, version 6.

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The spectral fits assume a redshift: 1.023 (GCN 14059)

Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 95 to 121780 s)

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WT and PC mode spectra of GRB 121211A

WT mode. Mean photon arrival: T0+201 s

NH (Galactic)9.8 × 1019 cm-2
NH (intrinsic)1.19 (+0.07, -0.07) × 1022 cm-2
z of absorber1.023
Photon index1.84 (+0.03, -0.03)
Flux (0.3-10 keV)
(Observed)
4.72 (+0.10, -0.10) × 10-9 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
6.205 (+0.142, -0.098) × 10-9 erg cm-2 s-1
Counts to flux (obs)4 × 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?
746.47 (748)
Spectrum exposure196 s

PC mode. Mean photon arrival: T0+18578 s

NH (Galactic)9.8 × 1019 cm-2
NH (intrinsic)8.1 (+1.7, -1.5) × 1021 cm-2
z of absorber1.023
Photon index1.98 (+0.11, -0.11)
Flux (0.3-10 keV)
(Observed)
2.73 (+0.20, -0.18) × 10-12 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
3.61 (+0.21, -0.18) × 10-12 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?
332.50 (388)
Spectrum exposure20.3 ks

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Late Time spectrum (T0 + 4000 to 121780 s)

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PC mode spectrum of GRB 121211A

PC mode. Mean photon arrival: T0+18908 s

NH (Galactic)9.8 × 1019 cm-2
NH (intrinsic)7.9 (+1.7, -1.5) × 1021 cm-2
z of absorber1.023
Photon index1.98 (+0.11, -0.11)
Flux (0.3-10 keV)
(Observed)
2.70 (+0.20, -0.18) × 10-12 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
3.54 (+0.21, -0.18) × 10-12 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?
327.32 (386)
Spectrum exposure20.2 ks

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