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Swift-XRT spectra of GRB 120118B

Last updated after receiving ObsID 00512003004, version 12

Data were analysed using HEASOFT version 6.29

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The spectral fits assume a redshift: 2.943 (GCN 14225)

Jump to: Time-averaged|Late Time


Time-averaged spectrum (T0 + 115 to 39856 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+124 s

NH (Galactic)9.36 × 1020 cm-2
NH (intrinsic)2.3 (+4.4, -2.3) × 1022 cm-2
z of absorber2.943
Photon index2.0 (+0.5, -0.4)
Flux (0.3-10 keV)
(Observed)
2.1 (+0.6, -0.5) × 10-10 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
2.8 (+0.8, -0.6) × 10-10 erg cm-2 s-1
Counts to flux (obs)3.10 × 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?
60.55 (81)
Spectrum exposure19 s

PC mode. Mean photon arrival: T0+7751 s

NH (Galactic)9.36 × 1020 cm-2
NH (intrinsic)5.7 (+1.9, -1.7) × 1022 cm-2
z of absorber2.943
Photon index1.98 (+0.15, -0.15)
Flux (0.3-10 keV)
(Observed)
4.0 (+0.4, -0.3) × 10-12 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
5.8 (+0.5, -0.4) × 10-12 erg cm-2 s-1
Counts to flux (obs)3.69 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)5.33 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
231.60 (322)
Spectrum exposure9.4 ks

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Late Time spectrum (T0 + 5317 to 39856 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+12677 s

NH (Galactic)9.36 × 1020 cm-2
NH (intrinsic)9 (+4, -3) × 1022 cm-2
z of absorber2.943
Photon index2.05 (+0.22, -0.21)
Flux (0.3-10 keV)
(Observed)
2.63 (+0.34, -0.30) × 10-12 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
4.2 (+0.6, -0.5) × 10-12 erg cm-2 s-1
Counts to flux (obs)3.73 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)5.96 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
181.78 (241)
Spectrum exposure8.0 ks

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