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Swift-XRT spectra of GRB 090423

Last updated after receiving ObsID 00350184010, version 5

Data were analysed using HEASOFT version 6.29

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Add time-sliced spectrum.

The spectral fits assume a redshift: 8.2 (Tanvir et al. 2009)

Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 79 to 75120 s)

Download spectral files for Time-averaged spectrum.

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PC mode spectrum of Time-averaged

PC mode. Mean photon arrival: T0+7936 s

N_H (Galactic)	3.17 × 10²⁰ cm^-2
N_H (intrinsic)	10 (+8, -8) × 10²² cm^-2
z of absorber	8.2
Photon index	1.71 (+0.13, -0.13)
Flux (0.3-10 keV) (Observed)	3.53 (+0.32, -0.29) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	3.94 (+0.28, -0.27) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.88 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.33 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	275.36 (342)
Spectrum exposure	14.3 ks

Late Time spectrum (T0 + 4001 to 75120 s)

Download spectral files for Late Time spectrum.

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+10567 s

N_H (Galactic)	3.17 × 10²⁰ cm^-2
N_H (intrinsic)	1.1 (+1.0, -0.9) × 10²³ cm^-2
z of absorber	8.2
Photon index	1.80 (+0.16, -0.15)
Flux (0.3-10 keV) (Observed)	2.25 (+0.24, -0.21) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	2.58 (+0.22, -0.20) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.68 × 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?	261.05 (290)
Spectrum exposure	13.6 ks