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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+387 s

N_H (Galactic)	4.75 × 10²⁰ cm^-2
N_H (intrinsic)	1.8 (+0.7, -0.7) × 10²⁰ cm^-2
z of absorber	0
Photon index	1.349 (+0.020, -0.020)
Flux (0.3-10 keV) (Observed)	3.19 (+0.05, -0.05) × 10^-9 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	3.37 (+0.04, -0.04) × 10^-9 erg cm^-2 s^-1
Counts to flux (obs)	4.75 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	5.02 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	955.51 (876)
Spectrum exposure	659 s

PC mode. Mean photon arrival: T0+12473 s

N_H (Galactic)	4.75 × 10²⁰ cm^-2
N_H (intrinsic)	2.1 (+2.4, -2.1) × 10²⁰ cm^-2
z of absorber	0
Photon index	1.81 (+0.09, -0.09)
Flux (0.3-10 keV) (Observed)	5.7 (+0.3, -0.3) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	6.48 (+0.31, -0.27) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.58 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.03 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	408.09 (456)
Spectrum exposure	15.6 ks

Late Time spectrum (T0 + 4726 to 41868 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+15661 s

N_H (Galactic)	4.75 × 10²⁰ cm^-2
N_H (intrinsic)	4.3 (+3.0, -2.8) × 10²⁰ cm^-2
z of absorber	0
Photon index	1.85 (+0.11, -0.11)
Flux (0.3-10 keV) (Observed)	4.06 (+0.28, -0.26) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	4.74 (+0.26, -0.22) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.53 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.13 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	381.78 (411)
Spectrum exposure	14.9 ks