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Swift-XRT spectra of GRB 121211A

Last updated after receiving ObsID 00541200004, version 7

Data were analysed using HEASOFT version 6.22

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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 121785 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+205 s

NH (Galactic)9.76 × 1019 cm-2
NH (intrinsic)1.20 (+0.08, -0.07) × 1022 cm-2
z of absorber1.023
Photon index1.91 (+0.04, -0.04)
Flux (0.3-10 keV)
(Observed)
4.00 (+0.09, -0.08) × 10-9 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
5.424 (+0.131, -0.086) × 10-9 erg cm-2 s-1
Counts to flux (obs)3.70 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)5.02 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
724.40 (727)
Spectrum exposure196 s

PC mode. Mean photon arrival: T0+18624 s

NH (Galactic)9.76 × 1019 cm-2
NH (intrinsic)8.0 (+1.7, -1.5) × 1021 cm-2
z of absorber1.023
Photon index1.98 (+0.11, -0.11)
Flux (0.3-10 keV)
(Observed)
2.86 (+0.20, -0.19) × 10-12 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
3.77 (+0.22, -0.19) × 10-12 erg cm-2 s-1
Counts to flux (obs)3.46 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)4.57 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
332.36 (388)
Spectrum exposure20.4 ks

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Late Time spectrum (T0 + 4000 to 121785 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+18953 s

NH (Galactic)9.76 × 1019 cm-2
NH (intrinsic)7.8 (+1.7, -1.5) × 1021 cm-2
z of absorber1.023
Photon index1.97 (+0.11, -0.11)
Flux (0.3-10 keV)
(Observed)
2.82 (+0.20, -0.19) × 10-12 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
3.69 (+0.22, -0.19) × 10-12 erg cm-2 s-1
Counts to flux (obs)3.48 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)4.55 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
327.63 (386)
Spectrum exposure20.3 ks

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