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Swift-XRT spectra of GRB 121226A

Last updated after receiving ObsID 00544027001, version 6.

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Time-averaged spectrum (T0 + 104 to 69145 s)

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PC mode spectrum of GRB 121226A

PC mode. Mean photon arrival: T0+5357 s

N_H (Galactic)	6.1 × 10²⁰ cm^-2
N_H (intrinsic)	8.3 (+2.5, -2.4) × 10²¹ cm^-2
z of absorber	0
Photon index	2.50 (+0.41, -0.38)
Flux (0.3-10 keV) (Observed)	8.2 (+1.5, -1.2) × 10^-13 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	2.6 (+1.8, -1.1) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	4.3 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	1.4 × 10^-10 erg cm^-2 ct^-1
C-stat (dof)	148.58 (191)
Exposure time	18.0 ks

Late Time spectrum (T0 + 4039 to 69145 s)

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PC mode spectrum of GRB 121226A

PC mode. Mean photon arrival: T0+12300 s

N_H (Galactic)	6.1 × 10²⁰ cm^-2
N_H (intrinsic)	9.0 (+3.5, -4.1) × 10²¹ cm^-2
z of absorber	0
Photon index	2.77 (+0.61, -0.52)
Flux (0.3-10 keV) (Observed)	2.91 (+0.86, -0.58) × 10^-13 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.29 (+2.91, -0.29) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.9 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	1.7 × 10^-10 erg cm^-2 ct^-1
C-stat (dof)	74.83 (100)
Exposure time	17.3 ks