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Swift-XRT spectra of GRB 121123A

Last updated after receiving ObsID 00539358003, version 5.

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Time-averaged spectrum (T0 + 129 to 41868 s)

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WT and PC mode spectra of GRB 121123A

WT mode. Mean photon arrival: T0+385 s

N_H (Galactic)	4.7 × 10²⁰ cm^-2
N_H (intrinsic)	1.8 (+0.7, -0.7) × 10²⁰ cm^-2
z of absorber	0
Photon index	1.340 (+0.020, -0.020)
Flux (0.3-10 keV) (Observed)	3.30 (+0.05, -0.05) × 10^-9 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	3.48 (+0.04, -0.04) × 10^-9 erg cm^-2 s^-1
Counts to flux (obs)	5 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	5 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	927.38 (879)
Spectrum exposure	659 s

PC mode. Mean photon arrival: T0+12366 s

N_H (Galactic)	4.7 × 10²⁰ cm^-2
N_H (intrinsic)	2.3 (+2.4, -2.3) × 10²⁰ cm^-2
z of absorber	0
Photon index	1.82 (+0.09, -0.09)
Flux (0.3-10 keV) (Observed)	5.8 (+0.3, -0.3) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	6.52 (+0.31, -0.28) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	4 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	399.02 (459)
Spectrum exposure	15.6 ks

Late Time spectrum (T0 + 4726 to 41868 s)

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PC mode spectrum of GRB 121123A

PC mode. Mean photon arrival: T0+15664 s

N_H (Galactic)	4.7 × 10²⁰ cm^-2
N_H (intrinsic)	4.2 (+3.0, -2.8) × 10²⁰ cm^-2
z of absorber	0
Photon index	1.84 (+0.11, -0.11)
Flux (0.3-10 keV) (Observed)	4.08 (+0.28, -0.26) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	4.75 (+0.26, -0.21) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	4 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	382.54 (411)
Spectrum exposure	14.9 ks