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Swift-XRT spectra of GRB 141220A

Last updated after receiving ObsID 00621915002, version 11

Data were analysed using HEASOFT version 6.29

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The spectral fits assume a redshift: 1.3195 (GCN 17198)

Jump to: Time-averaged|Late Time


Time-averaged spectrum (T0 + 105 to 42495 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+129 s

NH (Galactic)1.33 × 1020 cm-2
NH (intrinsic)1.1 (+2.6, -1.1) × 1021 cm-2
z of absorber1.3195
Photon index2.10 (+0.25, -0.21)
Flux (0.3-10 keV)
(Observed)
3.4 (+0.5, -0.4) × 10-10 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
3.8 (+0.5, -0.4) × 10-10 erg cm-2 s-1
Counts to flux (obs)2.95 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)3.23 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
137.46 (187)
Spectrum exposure42 s

PC mode. Mean photon arrival: T0+6442 s

NH (Galactic)1.33 × 1020 cm-2
NH (intrinsic)3.8 (+3.1, -2.7) × 1021 cm-2
z of absorber1.3195
Photon index1.78 (+0.18, -0.18)
Flux (0.3-10 keV)
(Observed)
3.1 (+0.4, -0.4) × 10-12 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
3.5 (+0.4, -0.3) × 10-12 erg cm-2 s-1
Counts to flux (obs)3.68 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)4.13 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
189.00 (228)
Spectrum exposure7.2 ks

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Late Time spectrum (T0 + 5598 to 42495 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+11538 s

NH (Galactic)1.33 × 1020 cm-2
NH (intrinsic)6 (+6, -5) × 1021 cm-2
z of absorber1.3195
Photon index1.77 (+0.29, -0.28)
Flux (0.3-10 keV)
(Observed)
1.50 (+0.33, -0.26) × 10-12 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
1.74 (+0.27, -0.24) × 10-12 erg cm-2 s-1
Counts to flux (obs)3.82 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)4.44 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
92.49 (145)
Spectrum exposure6.5 ks

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