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Swift-XRT spectra of GRB 090618

Last updated after receiving ObsID 00355083031, version 14

Data were analysed using HEASOFT version 6.32

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The spectral fits assume a redshift: 0.54 (GCN 9518)

Jump to: Time-averaged|Late Time


Time-averaged spectrum (T0 + 124 to 59738 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+795 s

NH (Galactic)7.59 × 1020 cm-2
NH (intrinsic)2.13 (+0.14, -0.14) × 1021 cm-2
z of absorber0.54
Photon index1.926 (+0.019, -0.019)
Flux (0.3-10 keV)
(Observed)
8.70 (+0.11, -0.10) × 10-10 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
1.117 (+0.011, -0.011) × 10-9 erg cm-2 s-1
Counts to flux (obs)3.52 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)4.52 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
826.67 (847)
Spectrum exposure2.3 ks

PC mode. Mean photon arrival: T0+24186 s

NH (Galactic)7.59 × 1020 cm-2
NH (intrinsic)2.4 (+0.4, -0.4) × 1021 cm-2
z of absorber0.54
Photon index1.83 (+0.04, -0.04)
Flux (0.3-10 keV)
(Observed)
2.50 (+0.07, -0.07) × 10-11 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
3.14 (+0.07, -0.07) × 10-11 erg cm-2 s-1
Counts to flux (obs)3.81 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)4.77 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
638.30 (666)
Spectrum exposure24.1 ks

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Late Time spectrum (T0 + 5963 to 59738 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+24777 s

NH (Galactic)7.59 × 1020 cm-2
NH (intrinsic)2.5 (+0.4, -0.4) × 1021 cm-2
z of absorber0.54
Photon index1.83 (+0.05, -0.05)
Flux (0.3-10 keV)
(Observed)
2.44 (+0.07, -0.07) × 10-11 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
3.07 (+0.07, -0.07) × 10-11 erg cm-2 s-1
Counts to flux (obs)3.81 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)4.79 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
615.54 (660)
Spectrum exposure24.0 ks

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