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Swift-XRT spectra of GRB 210420B

Last updated after receiving ObsID 01044382006, version 12

Data were analysed using HEASOFT version 6.32

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The spectral fits assume a redshift: 1.4 (GCN 29853)

Jump to: Time-averaged|Late Time


Time-averaged spectrum (T0 + 141 to 19314 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+205 s

NH (Galactic)2.09 × 1020 cm-2
NH (intrinsic)8.0 (+11.4, -8.0) × 1020 cm-2
z of absorber1.4
Photon index1.70 (+0.08, -0.08)
Flux (0.3-10 keV)
(Observed)
5.54 (+0.31, -0.29) × 10-10 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
5.85 (+0.27, -0.26) × 10-10 erg cm-2 s-1
Counts to flux (obs)3.70 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)3.90 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
492.75 (503)
Spectrum exposure177 s

PC mode. Mean photon arrival: T0+1755 s

NH (Galactic)2.09 × 1020 cm-2
NH (intrinsic)0 (+5.28 × 1020, -0) cm-2
z of absorber1.4
Photon index1.63 (+0.08, -0.07)
Flux (0.3-10 keV)
(Observed)
4.11 (+0.31, -0.22) × 10-11 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
4.25 (+0.31, -0.24) × 10-11 erg cm-2 s-1
Counts to flux (obs)3.92 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)4.05 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
374.22 (344)
Spectrum exposure2.9 ks

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Late Time spectrum (T0 + 12669 to 19314 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+14405 s

NH (Galactic)2.09 × 1020 cm-2
NH (intrinsic)5 (+9, -5) × 1021 cm-2
z of absorber1.4
Photon index2.2 (+0.6, -0.5)
Flux (0.3-10 keV)
(Observed)
1.8 (+0.7, -0.5) × 10-12 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
2.2 (+0.8, -0.5) × 10-12 erg cm-2 s-1
Counts to flux (obs)3.06 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)3.83 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
55.01 (52)
Spectrum exposure1.4 ks

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