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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

NH (Galactic)4.75 × 1020 cm-2
NH (intrinsic)1.8 (+0.7, -0.7) × 1020 cm-2
z of absorber0
Photon index1.349 (+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 exposure659 s

PC mode. Mean photon arrival: T0+12473 s

NH (Galactic)4.75 × 1020 cm-2
NH (intrinsic)2.1 (+2.4, -2.1) × 1020 cm-2
z of absorber0
Photon index1.81 (+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 exposure15.6 ks

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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

NH (Galactic)4.75 × 1020 cm-2
NH (intrinsic)4.3 (+3.0, -2.8) × 1020 cm-2
z of absorber0
Photon index1.85 (+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 exposure14.9 ks

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