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Swift-XRT spectra of GRB 080905B

Last updated after receiving ObsID 00323898008, version 21.

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The spectral fits assume a redshift: 2.374 (GCN 8191)

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Time-averaged spectrum (T0 + 109 to 74245 s)

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WT and PC mode spectra of GRB 080905B

WT mode. Mean photon arrival: T0+138 s

N_H (Galactic)	3.5 × 10²⁰ cm^-2
N_H (intrinsic)	1.93 (+0.74, -0.62) × 10²² cm^-2
z of absorber	2.374
Photon index	1.52 (+0.13, -0.13)
Flux (0.3-10 keV) (Observed)	5.49 (+0.54, -0.51) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	6.42 (+0.55, -0.38) × 10^-10 erg cm^-2 s^-1
Counts to flux (obs)	4.6 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	5.4 × 10^-11 erg cm^-2 ct^-1
C-stat (dof)	321.00 (406)
Exposure time	80 s

PC mode. Mean photon arrival: T0+18032 s

N_H (Galactic)	3.5 × 10²⁰ cm^-2
N_H (intrinsic)	2.16 (+0.54, -0.48) × 10²² cm^-2
z of absorber	2.374
Photon index	1.862 (+0.103, -0.097)
Flux (0.3-10 keV) (Observed)	7.53 (+0.48, -0.45) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	9.92 (+0.56, -0.57) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	4.0 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	5.3 × 10^-11 erg cm^-2 ct^-1
C-stat (dof)	422.72 (466)
Exposure time	18.1 ks

Late Time spectrum (T0 + 5188 to 74245 s)

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PC mode spectrum of GRB 080905B

PC mode. Mean photon arrival: T0+26431 s

N_H (Galactic)	3.5 × 10²⁰ cm^-2
N_H (intrinsic)	2.40 (+0.68, -0.59) × 10²² cm^-2
z of absorber	2.374
Photon index	2.03 (+0.13, -0.12)
Flux (0.3-10 keV) (Observed)	4.06 (+0.31, -0.29) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	5.82 (+0.46, -0.39) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.7 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	5.3 × 10^-11 erg cm^-2 ct^-1
C-stat (dof)	412.37 (381)
Exposure time	17.5 ks