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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)4.48 × 1020 cm-2
NH (intrinsic)0 (+5.10 × 1021, -0) cm-2
z of absorber0
Photon index3.04 (+1.76, -0.79)
Flux (0.3-10 keV)
(Observed)
8 (+5, -4) × 10-11 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
9 (+45, -5) × 10-11 erg cm-2 s-1
Counts to flux (obs)1.88 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)2.24 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
24.21 (15)
Spectrum exposure7 s

PC mode. Mean photon arrival: T0+7622 s

NH (Galactic)4.48 × 1020 cm-2
NH (intrinsic)2.1 (+0.5, -0.4) × 1021 cm-2
z of absorber0
Photon index2.24 (+0.14, -0.13)
Flux (0.3-10 keV)
(Observed)
4.12 (+0.29, -0.27) × 10-12 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
6.7 (+0.4, -0.5) × 10-12 erg cm-2 s-1
Counts to flux (obs)3.20 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)5.16 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
341.29 (369)
Spectrum exposure18.0 ks

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Late Time spectrum (T0 + 5291 to 52349 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+18876 s

NH (Galactic)4.48 × 1020 cm-2
NH (intrinsic)1.7 (+0.8, -0.7) × 1021 cm-2
z of absorber0
Photon index1.91 (+0.20, -0.19)
Flux (0.3-10 keV)
(Observed)
1.52 (+0.19, -0.17) × 10-12 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
2.03 (+0.20, -0.19) × 10-12 erg cm-2 s-1
Counts to flux (obs)3.72 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)4.96 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
259.97 (266)
Spectrum exposure16.2 ks

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