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Swift-XRT spectra of GRB 080804

Last updated after receiving ObsID 00319016006, version 20

Data were analysed using HEASOFT version 6.32

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Add time-sliced spectrum.

The spectral fits assume a redshift: 2.2 (GCN 8065)

Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 105 to 30091 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+157 s

N_H (Galactic)	1.72 × 10²⁰ cm^-2
N_H (intrinsic)	1.2 (+4.1, -1.2) × 10²¹ cm^-2
z of absorber	2.2
Photon index	1.417 (+0.114, -0.099)
Flux (0.3-10 keV) (Observed)	3.7 (+0.3, -0.3) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	3.79 (+0.31, -0.29) × 10^-10 erg cm^-2 s^-1
Counts to flux (obs)	4.37 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.50 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	314.80 (396)
Spectrum exposure	123 s

PC mode. Mean photon arrival: T0+6522 s

N_H (Galactic)	1.72 × 10²⁰ cm^-2
N_H (intrinsic)	2.7 (+3.0, -2.7) × 10²¹ cm^-2
z of absorber	2.2
Photon index	1.72 (+0.09, -0.09)
Flux (0.3-10 keV) (Observed)	7.8 (+0.5, -0.5) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	8.3 (+0.5, -0.5) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.74 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	3.97 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	332.24 (404)
Spectrum exposure	12.7 ks

Late Time spectrum (T0 + 5604 to 30091 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+12844 s

N_H (Galactic)	1.72 × 10²⁰ cm^-2
N_H (intrinsic)	1.8 (+4.1, -1.8) × 10²¹ cm^-2
z of absorber	2.2
Photon index	1.87 (+0.15, -0.13)
Flux (0.3-10 keV) (Observed)	2.58 (+0.25, -0.23) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	2.75 (+0.23, -0.21) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.42 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	3.65 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	214.00 (282)
Spectrum exposure	10.7 ks