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Swift-XRT spectra of GRB 121212A

Last updated after receiving ObsID 00541371004, version 11.

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Time-averaged spectrum (T0 + 72 to 52349 s)

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WT and PC mode spectra of GRB 121212A

WT mode. Mean photon arrival: T0+75 s

NH (Galactic)4.5 × 1020 cm-2
NH (intrinsic)0 (+2.6 × 1021, -0) cm-2
z of absorber0
Photon index3.10 (+1.93, -0.88)
Flux (0.3-10 keV)
(Observed)
7 (+5, -4) × 10-11 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
9 (+1.00 × 1011, -5) × 10-11 erg cm-2 s-1
Counts to flux (obs)1.8 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)2.1 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
23.49 (15)
Spectrum exposure7 s

PC mode. Mean photon arrival: T0+7598 s

NH (Galactic)4.5 × 1020 cm-2
NH (intrinsic)2.2 (+0.5, -0.4) × 1021 cm-2
z of absorber0
Photon index2.24 (+0.14, -0.13)
Flux (0.3-10 keV)
(Observed)
4.08 (+0.30, -0.27) × 10-12 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
6.6 (+0.4, -0.5) × 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?
339.41 (368)
Spectrum exposure18.0 ks

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Late Time spectrum (T0 + 5291 to 52349 s)

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PC mode spectrum of GRB 121212A

PC mode. Mean photon arrival: T0+18827 s

NH (Galactic)4.5 × 1020 cm-2
NH (intrinsic)1.7 (+0.8, -0.7) × 1021 cm-2
z of absorber0
Photon index1.91 (+0.21, -0.20)
Flux (0.3-10 keV)
(Observed)
1.51 (+0.19, -0.16) × 10-12 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
2.02 (+0.20, -0.19) × 10-12 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?
262.08 (265)
Spectrum exposure16.2 ks

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