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Swift-XRT spectra of GRB 080903

Last updated after receiving ObsID 00323542003, version 18.

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Time-averaged spectrum (T0 + 64 to 63673 s)

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WT and PC mode spectra of GRB 080903

WT mode. Mean photon arrival: T0+212 s

N_H (Galactic)	1.7 × 10²¹ cm^-2
N_H (intrinsic)	0 (+6.2 × 10¹⁹, -0) cm^-2
z of absorber	0
Photon index	0.957 (+0.046, -0.043)
Flux (0.3-10 keV) (Observed)	7.53 (+0.36, -0.24) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	8.08 (+0.26, -0.43) × 10^-10 erg cm^-2 s^-1
Counts to flux (obs)	7.0 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	7.5 × 10^-11 erg cm^-2 ct^-1
C-stat (dof)	630.61 (681)
Exposure time	412 s

PC mode. Mean photon arrival: T0+3171 s

N_H (Galactic)	1.7 × 10²¹ cm^-2
N_H (intrinsic)	8.6 (+11.8, -8.6) × 10²⁰ cm^-2
z of absorber	0
Photon index	1.43 (+0.24, -0.22)
Flux (0.3-10 keV) (Observed)	3.26 (+0.45, -0.40) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	3.94 (+0.41, -0.36) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	5.7 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	6.8 × 10^-11 erg cm^-2 ct^-1
C-stat (dof)	255.30 (298)
Exposure time	24.7 ks

Late Time spectrum (T0 + 4692 to 63673 s)

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PC mode spectrum of GRB 080903

PC mode. Mean photon arrival: T0+12533 s

N_H (Galactic)	1.7 × 10²¹ cm^-2
N_H (intrinsic)	2.4 (+3.3, -2.4) × 10²¹ cm^-2
z of absorber	0
Photon index	2.24 (+0.69, -0.63)
Flux (0.3-10 keV) (Observed)	1.89 (+0.68, -0.47) × 10^-13 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	3.77 (+3.81, -0.91) × 10^-13 erg cm^-2 s^-1
Counts to flux (obs)	3.8 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	7.5 × 10^-11 erg cm^-2 ct^-1
C-stat (dof)	58.90 (76)
Exposure time	23.7 ks