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Swift-XRT spectra of GRB 230911C

Last updated after receiving ObsID 01191188009, version 12

Data were analysed using HEASOFT version 6.35.2

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Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 122 to 11528 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+184 s

N_H (Galactic)	9.36 × 10²⁰ cm^-2
N_H (intrinsic)	0 (+7.38 × 10²⁰, -0) cm^-2
z of absorber	0
Photon index	2.3 (+0.4, -0.3)
Flux (0.3-10 keV) (Observed)	1.11 (+0.26, -0.25) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.32 (+0.35, -0.19) × 10^-10 erg cm^-2 s^-1
Counts to flux (obs)	2.65 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	3.16 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	81.63 (96)
Spectrum exposure	33 s

PC mode. Mean photon arrival: T0+1950 s

N_H (Galactic)	9.36 × 10²⁰ cm^-2
N_H (intrinsic)	1.8 (+8.0, -1.8) × 10²⁰ cm^-2
z of absorber	0
Photon index	1.82 (+0.23, -0.17)
Flux (0.3-10 keV) (Observed)	1.14 (+0.15, -0.14) × 10^-11 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.35 (+0.15, -0.12) × 10^-11 erg cm^-2 s^-1
Counts to flux (obs)	3.77 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.48 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	186.51 (231)
Spectrum exposure	4.3 ks

Late Time spectrum (T0 + 4167 to 11528 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+7738 s

N_H (Galactic)	9.36 × 10²⁰ cm^-2
N_H (intrinsic)	0 (+1.48 × 10²¹, -0) cm^-2
z of absorber	0
Photon index	1.49 (+0.50, -0.21)
Flux (0.3-10 keV) (Observed)	1.4 (+0.3, -0.4) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.6 (+0.3, -0.4) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	4.42 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.89 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	73.01 (66)
Spectrum exposure	3.7 ks