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Swift-XRT spectra of GRB 121125A

Last updated after receiving ObsID 00539563001, version 3.

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Time-averaged spectrum (T0 + 73 to 46552 s)

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WT and PC mode spectra of GRB 121125A

WT mode. Mean photon arrival: T0+108 s

N_H (Galactic)	1.3 × 10²⁰ cm^-2
N_H (intrinsic)	1.34 (+0.23, -0.22) × 10²¹ cm^-2
z of absorber	0
Photon index	2.019 (+0.098, -0.093)
Flux (0.3-10 keV) (Observed)	7.97 (+0.41, -0.39) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.101 (+0.047, -0.052) × 10^-9 erg cm^-2 s^-1
Counts to flux (obs)	3.5 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.8 × 10^-11 erg cm^-2 ct^-1
C-stat (dof)	438.41 (522)
Exposure time	133 s

PC mode. Mean photon arrival: T0+11179 s

N_H (Galactic)	1.3 × 10²⁰ cm^-2
N_H (intrinsic)	8.5 (+2.5, -2.4) × 10²⁰ cm^-2
z of absorber	0
Photon index	2.15 (+0.12, -0.11)
Flux (0.3-10 keV) (Observed)	5.63 (+0.33, -0.31) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	7.55 (+0.39, -0.46) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.4 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.5 × 10^-11 erg cm^-2 ct^-1
C-stat (dof)	348.36 (417)
Exposure time	16.0 ks

Late Time spectrum (T0 + 4031 to 46552 s)

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PC mode spectrum of GRB 121125A

PC mode. Mean photon arrival: T0+13203 s

N_H (Galactic)	1.3 × 10²⁰ cm^-2
N_H (intrinsic)	1.04 (+0.28, -0.27) × 10²¹ cm^-2
z of absorber	0
Photon index	2.24 (+0.13, -0.13)
Flux (0.3-10 keV) (Observed)	4.26 (+0.27, -0.25) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	6.15 (+0.35, -0.44) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.3 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.7 × 10^-11 erg cm^-2 ct^-1
C-stat (dof)	306.95 (391)
Exposure time	15.8 ks