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Swift-XRT spectra of GRB 210420B

Last updated after receiving ObsID 01044382006, version 12

Data were analysed using HEASOFT version 6.29

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Add time-sliced spectrum.

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

N_H (Galactic)	2.09 × 10²⁰ cm^-2
N_H (intrinsic)	1.4 (+1.2, -1.1) × 10²¹ cm^-2
z of absorber	1.4
Photon index	1.71 (+0.08, -0.08)
Flux (0.3-10 keV) (Observed)	5.53 (+0.31, -0.29) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	5.92 (+0.27, -0.26) × 10^-10 erg cm^-2 s^-1
Counts to flux (obs)	3.68 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	3.94 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	526.78 (506)
Spectrum exposure	177 s

PC mode. Mean photon arrival: T0+1755 s

N_H (Galactic)	2.09 × 10²⁰ cm^-2
N_H (intrinsic)	0 (+5.32 × 10²⁰, -0) cm^-2
z of absorber	1.4
Photon index	1.63 (+0.08, -0.07)
Flux (0.3-10 keV) (Observed)	4.11 (+0.31, -0.23) × 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?	362.13 (351)
Spectrum exposure	2.9 ks

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

N_H (Galactic)	2.09 × 10²⁰ cm^-2
N_H (intrinsic)	5 (+9, -5) × 10²¹ cm^-2
z of absorber	1.4
Photon index	2.2 (+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)	2.3 (+0.9, -0.5) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.02 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	3.89 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	54.37 (55)
Spectrum exposure	1.4 ks