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Swift-XRT spectra of GRB 090926B

Last updated after receiving ObsID 00370791001, version 5

Data were analysed using HEASOFT version 6.32

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Add time-sliced spectrum.

The spectral fits assume a redshift: 1.24 (GCN 9947)

Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 94 to 40016 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+180 s

N_H (Galactic)	2.02 × 10²⁰ cm^-2
N_H (intrinsic)	2.28 (+0.23, -0.21) × 10²² cm^-2
z of absorber	1.24
Photon index	1.77 (+0.06, -0.06)
Flux (0.3-10 keV) (Observed)	8.5 (+0.3, -0.3) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.14 (+0.03, -0.03) × 10^-9 erg cm^-2 s^-1
Counts to flux (obs)	4.21 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	5.66 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	627.26 (691)
Spectrum exposure	306 s

PC mode. Mean photon arrival: T0+2638 s

N_H (Galactic)	2.02 × 10²⁰ cm^-2
N_H (intrinsic)	2.3 (+0.8, -0.6) × 10²² cm^-2
z of absorber	1.24
Photon index	1.50 (+0.16, -0.16)
Flux (0.3-10 keV) (Observed)	2.36 (+0.26, -0.23) × 10^-11 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	2.88 (+0.24, -0.22) × 10^-11 erg cm^-2 s^-1
Counts to flux (obs)	5.11 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	6.24 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	268.42 (326)
Spectrum exposure	3.3 ks

Late Time spectrum (T0 + 5288 to 40016 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+10927 s

N_H (Galactic)	2.02 × 10²⁰ cm^-2
N_H (intrinsic)	2.5 (+2.1, -1.4) × 10²² cm^-2
z of absorber	1.24
Photon index	2.0 (+0.5, -0.5)
Flux (0.3-10 keV) (Observed)	2.9 (+1.0, -0.7) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	4.39 (+1.71, -0.86) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.99 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	5.98 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	69.32 (90)
Spectrum exposure	1.7 ks