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Swift-XRT spectra of GRB 071227

Last updated after receiving ObsID 00299787002, version 32

Data were analysed using HEASOFT version 6.32

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The spectral fits assume a redshift: 0.383 (GCN 7152)

Jump to: Time-averaged|Late Time


Time-averaged spectrum (T0 + 103 to 69519 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+147 s

NH (Galactic)1.30 × 1020 cm-2
NH (intrinsic)3.1 (+1.2, -1.0) × 1021 cm-2
z of absorber0.383
Photon index1.56 (+0.14, -0.14)
Flux (0.3-10 keV)
(Observed)
4.0 (+0.4, -0.4) × 10-10 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
4.6 (+0.4, -0.3) × 10-10 erg cm-2 s-1
Counts to flux (obs)4.29 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)4.98 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
296.87 (388)
Spectrum exposure103 s

PC mode. Mean photon arrival: T0+4222 s

NH (Galactic)1.30 × 1020 cm-2
NH (intrinsic)1.1 (+2.1, -1.1) × 1021 cm-2
z of absorber0.383
Photon index2.0 (+0.5, -0.4)
Flux (0.3-10 keV)
(Observed)
2.0 (+0.7, -0.5) × 10-13 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
2.3 (+0.6, -0.5) × 10-13 erg cm-2 s-1
Counts to flux (obs)3.27 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)3.82 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
63.60 (102)
Spectrum exposure25.3 ks

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Late Time spectrum (T0 + 4284 to 69519 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+18196 s

NH (Galactic)1.30 × 1020 cm-2
NH (intrinsic)0 (+4.09 × 1021, -0) cm-2
z of absorber0.383
Photon index1.5 (+0.9, -0.5)
Flux (0.3-10 keV)
(Observed)
6.8 (+2.7, -3.0) × 10-14 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
7.0 (+4.3, -2.7) × 10-14 erg cm-2 s-1
Counts to flux (obs)4.35 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)4.45 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
26.29 (24)
Spectrum exposure24.8 ks

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