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Swift-XRT spectra of GRB 090423

Last updated after receiving ObsID 00350184010, version 5

Data were analysed using HEASOFT version 6.32

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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+7985 s

NH (Galactic)3.17 × 1020 cm-2
NH (intrinsic)10 (+9, -8) × 1022 cm-2
z of absorber8.2
Photon index1.71 (+0.14, -0.13)
Flux (0.3-10 keV)
(Observed)
3.46 (+0.32, -0.29) × 10-12 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
3.86 (+0.28, -0.27) × 10-12 erg cm-2 s-1
Counts to flux (obs)3.87 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)4.32 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
275.12 (339)
Spectrum exposure14.3 ks

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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+10692 s

NH (Galactic)3.17 × 1020 cm-2
NH (intrinsic)1.12 (+1.00, -0.88) × 1023 cm-2
z of absorber8.2
Photon index1.81 (+0.16, -0.16)
Flux (0.3-10 keV)
(Observed)
2.19 (+0.23, -0.21) × 10-12 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
2.51 (+0.21, -0.20) × 10-12 erg cm-2 s-1
Counts to flux (obs)3.66 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)4.20 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
258.13 (287)
Spectrum exposure13.6 ks

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