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Swift-XRT spectra of GRB 121102A

Last updated after receiving ObsID 00537266000, version 3.

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Time-averaged spectrum (T0 + 53 to 30368 s)

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WT and PC mode spectra of GRB 121102A

WT mode. Mean photon arrival: T0+94 s

N_H (Galactic)	5 × 10²¹ cm^-2
N_H (intrinsic)	3.59 (+1.05, -0.98) × 10²¹ cm^-2
z of absorber	0
Photon index	1.95 (+0.13, -0.13)
Flux (0.3-10 keV) (Observed)	6.7 (+0.4, -0.4) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.291 (+0.069, -0.109) × 10^-9 erg cm^-2 s^-1
Counts to flux (obs)	5 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	1.1 × 10^-10 erg cm^-2 ct^-1
C-stat (dof)	519.39 (568)
Exposure time	189 s

PC mode. Mean photon arrival: T0+3996 s

N_H (Galactic)	5 × 10²¹ cm^-2
N_H (intrinsic)	2.6 (+1.9, -1.6) × 10²¹ cm^-2
z of absorber	0
Photon index	1.75 (+0.22, -0.21)
Flux (0.3-10 keV) (Observed)	3.9 (+0.4, -0.4) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	6.43 (+1.04, -0.71) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	6 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	10 × 10^-11 erg cm^-2 ct^-1
C-stat (dof)	280.19 (378)
Exposure time	13.2 ks

Late Time spectrum (T0 + 4790 to 30368 s)

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PC mode spectrum of GRB 121102A

PC mode. Mean photon arrival: T0+12737 s

N_H (Galactic)	5 × 10²¹ cm^-2
N_H (intrinsic)	1.3 (+3.4, -1.3) × 10²¹ cm^-2
z of absorber	0
Photon index	1.6 (+0.4, -0.3)
Flux (0.3-10 keV) (Observed)	1.33 (+0.28, -0.24) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.94 (+0.59, -0.28) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	6 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	9 × 10^-11 erg cm^-2 ct^-1
C-stat (dof)	124.27 (147)
Exposure time	11.9 ks