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Swift-XRT spectra of GRB 091208B

Last updated after receiving ObsID 00378559013, version 9

Data were analysed using HEASOFT version 6.29

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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)

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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)	9.9 (+22.5, -9.8) × 10²¹ cm^-2
z of absorber	1.063
Photon index	2.0 (+0.8, -0.6)
Flux (0.3-10 keV) (Observed)	1.7 (+0.8, -0.6) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	2.35 (+1.55, -0.67) × 10^-10 erg cm^-2 s^-1
Counts to flux (obs)	2.93 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.16 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	33.40 (48)
Spectrum exposure	11 s

PC mode. Mean photon arrival: T0+9257 s

N_H (Galactic)	5.75 × 10²⁰ cm^-2
N_H (intrinsic)	1.13 (+0.28, -0.25) × 10²² cm^-2
z of absorber	1.063
Photon index	1.93 (+0.13, -0.12)
Flux (0.3-10 keV) (Observed)	7.6 (+0.6, -0.6) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.06 (+0.07, -0.06) × 10^-11 erg cm^-2 s^-1
Counts to flux (obs)	3.77 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	5.24 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	338.56 (377)
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