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Swift-XRT spectra of GRB 151027A

Last updated after receiving ObsID 00661775014, version 12

Data were analysed using HEASOFT version 6.35.2

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The spectral fits assume a redshift: 0.81 (GCN 18487)

Jump to: Time-averaged|Late Time


Time-averaged spectrum (T0 + 93 to 63739 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+555 s

NH (Galactic)3.75 × 1020 cm-2
NH (intrinsic)3.79 (+0.25, -0.25) × 1021 cm-2
z of absorber0.81
Photon index1.953 (+0.024, -0.024)
Flux (0.3-10 keV)
(Observed)
8.39 (+0.13, -0.13) × 10-10 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
1.065 (+0.013, -0.013) × 10-9 erg cm-2 s-1
Counts to flux (obs)3.41 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)4.33 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
752.29 (803)
Spectrum exposure1.5 ks

PC mode. Mean photon arrival: T0+17215 s

NH (Galactic)3.75 × 1020 cm-2
NH (intrinsic)4.4 (+0.7, -0.6) × 1021 cm-2
z of absorber0.81
Photon index1.98 (+0.06, -0.06)
Flux (0.3-10 keV)
(Observed)
3.50 (+0.14, -0.13) × 10-11 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
4.55 (+0.15, -0.14) × 10-11 erg cm-2 s-1
Counts to flux (obs)3.44 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)4.48 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
539.31 (547)
Spectrum exposure10.2 ks

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Late Time spectrum (T0 + 5910 to 63739 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+17215 s

NH (Galactic)3.75 × 1020 cm-2
NH (intrinsic)4.4 (+0.7, -0.6) × 1021 cm-2
z of absorber0.81
Photon index1.98 (+0.06, -0.06)
Flux (0.3-10 keV)
(Observed)
3.50 (+0.14, -0.13) × 10-11 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
4.55 (+0.15, -0.14) × 10-11 erg cm-2 s-1
Counts to flux (obs)3.44 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)4.48 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
539.31 (547)
Spectrum exposure10.2 ks

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