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Swift-XRT spectra of GRB 081102

Last updated after receiving ObsID 00333427000, version 20.

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Time-averaged spectrum (T0 + 98 to 80709 s)

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WT and PC mode spectra of GRB 081102

WT mode. Mean photon arrival: T0+147 s

N_H (Galactic)	5.0 × 10²¹ cm^-2
N_H (intrinsic)	4.0 (+4.9, -4.0) × 10²⁰ cm^-2
z of absorber	0
Photon index	2.75 (+0.14, -0.14)
Flux (0.3-10 keV) (Observed)	4.43 (+0.26, -0.24) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.56 (+0.26, -0.14) × 10^-9 erg cm^-2 s^-1
Counts to flux (obs)	3.2 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	1.1 × 10^-10 erg cm^-2 ct^-1
C-stat (dof)	433.55 (455)
Exposure time	151 s

PC mode. Mean photon arrival: T0+4296 s

N_H (Galactic)	5.0 × 10²¹ cm^-2
N_H (intrinsic)	0 (+3.8 × 10²⁰, -0) cm^-2
z of absorber	0
Photon index	1.794 (+0.110, -0.086)
Flux (0.3-10 keV) (Observed)	4.21 (+0.27, -0.24) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	6.49 (+0.38, -0.36) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	5.2 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	8.0 × 10^-11 erg cm^-2 ct^-1
C-stat (dof)	379.20 (414)
Exposure time	28.1 ks

Late Time spectrum (T0 + 5578 to 80709 s)

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PC mode spectrum of GRB 081102

PC mode. Mean photon arrival: T0+21469 s

N_H (Galactic)	5.0 × 10²¹ cm^-2
N_H (intrinsic)	0 (+2.3 × 10²¹, -0) cm^-2
z of absorber	0
Photon index	1.85 (+0.43, -0.24)
Flux (0.3-10 keV) (Observed)	3.55 (+0.43, -0.69) × 10^-13 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	5.67 (+1.83, -0.76) × 10^-13 erg cm^-2 s^-1
Counts to flux (obs)	5.0 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	8.0 × 10^-11 erg cm^-2 ct^-1
C-stat (dof)	113.98 (120)
Exposure time	26.7 ks