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Swift-XRT spectra of GRB 121108A

Last updated after receiving ObsID 00537921001, version 6.

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Time-averaged spectrum (T0 + 60 to 76788 s)

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WT and PC mode spectra of GRB 121108A

WT mode. Mean photon arrival: T0+131 s

N_H (Galactic)	1.9 × 10²¹ cm^-2
N_H (intrinsic)	1.77 (+0.45, -0.43) × 10²¹ cm^-2
z of absorber	0
Photon index	1.598 (+0.094, -0.092)
Flux (0.3-10 keV) (Observed)	1.851 (+0.099, -0.094) × 10^-9 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	2.48 (+0.11, -0.10) × 10^-9 erg cm^-2 s^-1
Counts to flux (obs)	5.2 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	7.0 × 10^-11 erg cm^-2 ct^-1
C-stat (dof)	612.56 (616)
Exposure time	84 s

PC mode. Mean photon arrival: T0+7764 s

N_H (Galactic)	1.9 × 10²¹ cm^-2
N_H (intrinsic)	4.1 (+7.4, -4.1) × 10²⁰ cm^-2
z of absorber	0
Photon index	1.70 (+0.20, -0.17)
Flux (0.3-10 keV) (Observed)	1.46 (+0.16, -0.15) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.90 (+0.18, -0.16) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	4.6 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	6.0 × 10^-11 erg cm^-2 ct^-1
C-stat (dof)	250.04 (334)
Exposure time	29.4 ks

Late Time spectrum (T0 + 5197 to 76788 s)

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PC mode spectrum of GRB 121108A

PC mode. Mean photon arrival: T0+22319 s

N_H (Galactic)	1.9 × 10²¹ cm^-2
N_H (intrinsic)	1.5 (+1.5, -1.3) × 10²¹ cm^-2
z of absorber	0
Photon index	2.14 (+0.40, -0.37)
Flux (0.3-10 keV) (Observed)	3.73 (+0.79, -0.62) × 10^-13 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	6.6 (+2.4, -1.3) × 10^-13 erg cm^-2 s^-1
Counts to flux (obs)	3.7 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	6.6 × 10^-11 erg cm^-2 ct^-1
C-stat (dof)	120.24 (152)
Exposure time	27.7 ks