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Swift-XRT spectra of GRB 091109A

Last updated after receiving ObsID 00375246012, version 11

Data were analysed using HEASOFT version 6.32

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Add time-sliced spectrum.

The spectral fits assume a redshift: 3.076 (GCN 10350)

Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 154 to 40795 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+162 s

N_H (Galactic)	3.34 × 10²⁰ cm^-2
N_H (intrinsic)	7 (+39, -7) × 10²¹ cm^-2
z of absorber	3.076
Photon index	1.8 (+0.7, -0.4)
Flux (0.3-10 keV) (Observed)	1.7 (+0.6, -0.5) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.9 (+0.6, -0.5) × 10^-10 erg cm^-2 s^-1
Counts to flux (obs)	2.94 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	3.25 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	70.97 (76)
Spectrum exposure	19 s

PC mode. Mean photon arrival: T0+7411 s

N_H (Galactic)	3.34 × 10²⁰ cm^-2
N_H (intrinsic)	1.08 (+1.12, -1.00) × 10²² cm^-2
z of absorber	3.076
Photon index	1.90 (+0.18, -0.17)
Flux (0.3-10 keV) (Observed)	1.87 (+0.23, -0.20) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	2.15 (+0.20, -0.19) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.45 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	3.96 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	218.55 (243)
Spectrum exposure	14.6 ks

Late Time spectrum (T0 + 4143 to 40795 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+12923 s

N_H (Galactic)	3.34 × 10²⁰ cm^-2
N_H (intrinsic)	1.8 (+1.7, -1.5) × 10²² cm^-2
z of absorber	3.076
Photon index	1.91 (+0.24, -0.22)
Flux (0.3-10 keV) (Observed)	8.8 (+1.5, -1.2) × 10^-13 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.05 (+0.13, -0.12) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.46 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.12 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	142.46 (177)
Spectrum exposure	14.0 ks