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Swift-XRT spectra of GRB 090813

Last updated after receiving ObsID 00359884011, version 12

Data were analysed using HEASOFT version 6.32

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Jump to: Time-averaged|Late Time


Time-averaged spectrum (T0 + 84 to 65529 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+426 s

NH (Galactic)1.02 × 1021 cm-2
NH (intrinsic)1.45 (+0.24, -0.23) × 1021 cm-2
z of absorber0
Photon index1.96 (+0.06, -0.06)
Flux (0.3-10 keV)
(Observed)
2.852 (+0.100, -0.097) × 10-10 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
3.99 (+0.11, -0.11) × 10-10 erg cm-2 s-1
Counts to flux (obs)3.62 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)5.07 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
592.57 (614)
Spectrum exposure805 s

PC mode. Mean photon arrival: T0+12603 s

NH (Galactic)1.02 × 1021 cm-2
NH (intrinsic)1.6 (+0.4, -0.4) × 1021 cm-2
z of absorber0
Photon index1.79 (+0.09, -0.09)
Flux (0.3-10 keV)
(Observed)
6.8 (+0.4, -0.4) × 10-12 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
9.0 (+0.4, -0.4) × 10-12 erg cm-2 s-1
Counts to flux (obs)4.10 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)5.39 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
518.21 (518)
Spectrum exposure26.2 ks

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Late Time spectrum (T0 + 5491 to 65529 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+17916 s

NH (Galactic)1.02 × 1021 cm-2
NH (intrinsic)1.5 (+0.5, -0.4) × 1021 cm-2
z of absorber0
Photon index1.81 (+0.11, -0.11)
Flux (0.3-10 keV)
(Observed)
3.95 (+0.26, -0.24) × 10-12 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
5.19 (+0.27, -0.26) × 10-12 erg cm-2 s-1
Counts to flux (obs)4.02 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)5.28 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
402.98 (450)
Spectrum exposure25.1 ks

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