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Swift-XRT spectra of GRB 081008

Last updated after receiving ObsID 00331093010, version 12

Data were analysed using HEASOFT version 6.32

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Add time-sliced spectrum.

The spectral fits assume a redshift: 1.967 (GCN 8346)

Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 93 to 69166 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+205 s

N_H (Galactic)	9.28 × 10²⁰ cm^-2
N_H (intrinsic)	7.2 (+1.3, -1.3) × 10²¹ cm^-2
z of absorber	1.967
Photon index	1.74 (+0.03, -0.03)
Flux (0.3-10 keV) (Observed)	2.92 (+0.07, -0.06) × 10^-9 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	3.50 (+0.06, -0.06) × 10^-9 erg cm^-2 s^-1
Counts to flux (obs)	3.90 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.68 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	763.10 (746)
Spectrum exposure	316 s

PC mode. Mean photon arrival: T0+8038 s

N_H (Galactic)	9.28 × 10²⁰ cm^-2
N_H (intrinsic)	1.3 (+3.4, -1.3) × 10²¹ cm^-2
z of absorber	1.967
Photon index	1.879 (+0.110, -0.099)
Flux (0.3-10 keV) (Observed)	6.8 (+0.5, -0.5) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	8.2 (+0.5, -0.5) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.54 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.24 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	346.30 (368)
Spectrum exposure	10.8 ks

Late Time spectrum (T0 + 5221 to 69166 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+14586 s

N_H (Galactic)	9.28 × 10²⁰ cm^-2
N_H (intrinsic)	2.8 (+4.9, -2.8) × 10²¹ cm^-2
z of absorber	1.967
Photon index	1.92 (+0.16, -0.15)
Flux (0.3-10 keV) (Observed)	2.84 (+0.31, -0.27) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	3.48 (+0.29, -0.27) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.50 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.28 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	207.12 (280)
Spectrum exposure	9.5 ks