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Swift-XRT spectra of GRB 191220A

Last updated after receiving ObsID 00945344004, version 7

Data were analysed using HEASOFT version 6.26.1

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Jump to: Time-averaged|Late Time


Time-averaged spectrum (T0 + 138 to 29100 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+154 s

NH (Galactic)1.53 × 1021 cm-2
NH (intrinsic)0 (+4.21 × 1020, -0) cm-2
z of absorber0
Photon index2.42 (+0.30, -0.25)
Flux (0.3-10 keV)
(Observed)
1.26 (+0.25, -0.18) × 10-10 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
1.55 (+0.43, -0.20) × 10-10 erg cm-2 s-1
Counts to flux (obs)2.58 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)3.18 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
104.12 (119)
Spectrum exposure38 s

PC mode. Mean photon arrival: T0+8454 s

NH (Galactic)1.53 × 1021 cm-2
NH (intrinsic)0 (+3.59 × 1020, -0) cm-2
z of absorber0
Photon index2.03 (+0.16, -0.12)
Flux (0.3-10 keV)
(Observed)
1.66 (+0.15, -0.18) × 10-12 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
2.18 (+0.20, -0.29) × 10-12 erg cm-2 s-1
Counts to flux (obs)3.35 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)4.40 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
194.89 (215)
Spectrum exposure9.8 ks

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Late Time spectrum (T0 + 4261 to 29100 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+14684 s

NH (Galactic)1.53 × 1021 cm-2
NH (intrinsic)1.7 (+10.7, -1.7) × 1020 cm-2
z of absorber0
Photon index2.11 (+0.33, -0.22)
Flux (0.3-10 keV)
(Observed)
9.7 (+1.6, -1.5) × 10-13 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
1.35 (+0.29, -0.20) × 10-12 erg cm-2 s-1
Counts to flux (obs)3.24 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)4.50 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
126.40 (150)
Spectrum exposure8.9 ks

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