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Swift-XRT spectra of GRB 210421A

Last updated after receiving ObsID 01044426001, version 6

Data were analysed using HEASOFT version 6.28

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Jump to: Time-averaged|Late Time


Time-averaged spectrum (T0 + 91 to 23100 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+127 s

NH (Galactic)4.63 × 1021 cm-2
NH (intrinsic)7 (+3, -3) × 1020 cm-2
z of absorber0
Photon index2.74 (+0.08, -0.08)
Flux (0.3-10 keV)
(Observed)
1.55 (+0.05, -0.05) × 10-9 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
4.6 (+0.4, -0.3) × 10-9 erg cm-2 s-1
Counts to flux (obs)2.85 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)8.45 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
486.10 (534)
Spectrum exposure130 s

PC mode. Mean photon arrival: T0+5830 s

NH (Galactic)4.63 × 1021 cm-2
NH (intrinsic)0 (+8.19 × 1020, -0) cm-2
z of absorber0
Photon index2.17 (+0.19, -0.14)
Flux (0.3-10 keV)
(Observed)
3.0 (+0.3, -0.3) × 10-12 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
5.4 (+0.7, -0.5) × 10-12 erg cm-2 s-1
Counts to flux (obs)3.66 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)6.54 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
208.60 (221)
Spectrum exposure5.6 ks

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Late Time spectrum (T0 + 5132 to 23100 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+13299 s

NH (Galactic)4.63 × 1021 cm-2
NH (intrinsic)7.7 (+23.7, -7.7) × 1020 cm-2
z of absorber0
Photon index2.3 (+0.4, -0.3)
Flux (0.3-10 keV)
(Observed)
1.26 (+0.28, -0.23) × 10-12 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
2.65 (+1.35, -0.51) × 10-12 erg cm-2 s-1
Counts to flux (obs)3.47 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)7.27 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
114.57 (113)
Spectrum exposure5.0 ks

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