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Swift-XRT spectra of GRB 091208B

Last updated after receiving ObsID 00378559013, version 9

Data were analysed using HEASOFT version 6.32

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Add time-sliced spectrum.

The spectral fits assume a redshift: 1.063 (GCN 10263)

Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 118 to 46280 s)

Download spectral files for Time-averaged spectrum.

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+124 s

N_H (Galactic)	5.75 × 10²⁰ cm^-2
N_H (intrinsic)	1.1 (+3.0, -1.0) × 10²² cm^-2
z of absorber	1.063
Photon index	2.0 (+0.8, -0.6)
Flux (0.3-10 keV) (Observed)	1.7 (+0.9, -0.6) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	2.42 (+2.06, -0.72) × 10^-10 erg cm^-2 s^-1
Counts to flux (obs)	2.99 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.21 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	33.01 (47)
Spectrum exposure	11 s

PC mode. Mean photon arrival: T0+8550 s

N_H (Galactic)	5.75 × 10²⁰ cm^-2
N_H (intrinsic)	1.09 (+0.26, -0.24) × 10²² cm^-2
z of absorber	1.063
Photon index	1.91 (+0.12, -0.12)
Flux (0.3-10 keV) (Observed)	8.1 (+0.6, -0.6) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.11 (+0.07, -0.06) × 10^-11 erg cm^-2 s^-1
Counts to flux (obs)	3.80 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	5.21 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	344.91 (393)
Spectrum exposure	9.5 ks

Late Time spectrum (T0 + 5310 to 46280 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+14308 s

N_H (Galactic)	5.75 × 10²⁰ cm^-2
N_H (intrinsic)	1.1 (+0.3, -0.3) × 10²² cm^-2
z of absorber	1.063
Photon index	1.85 (+0.16, -0.15)
Flux (0.3-10 keV) (Observed)	4.3 (+0.4, -0.4) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	5.7 (+0.5, -0.4) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.94 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	5.26 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	267.29 (315)
Spectrum exposure	9.0 ks