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Swift-XRT spectra of GRB 210731A

Last updated after receiving ObsID 01062336009, version 12

Data were analysed using HEASOFT version 6.35.2

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The spectral fits assume a redshift: 1.2525 (GCN 30583)

Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 207 to 69481 s)

Download spectral files for Time-averaged spectrum.

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+234 s

N_H (Galactic)	1.15 × 10²¹ cm^-2
N_H (intrinsic)	1.5 (+2.3, -1.5) × 10²¹ cm^-2
z of absorber	1.2525
Photon index	3.04 (+0.27, -0.23)
Flux (0.3-10 keV) (Observed)	4.0 (+0.3, -0.3) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	8.2 (+1.8, -1.1) × 10^-10 erg cm^-2 s^-1
Counts to flux (obs)	2.24 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.55 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	329.21 (276)
Spectrum exposure	62 s

PC mode. Mean photon arrival: T0+37093 s

N_H (Galactic)	1.15 × 10²¹ cm^-2
N_H (intrinsic)	1.8 (+3.7, -1.8) × 10²¹ cm^-2
z of absorber	1.2525
Photon index	1.96 (+0.21, -0.19)
Flux (0.3-10 keV) (Observed)	1.78 (+0.25, -0.22) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	2.27 (+0.25, -0.23) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.47 × 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?	191.68 (215)
Spectrum exposure	10.0 ks

Late Time spectrum (T0 + 11782 to 69481 s)

Download spectral files for Late Time spectrum.

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+37093 s

N_H (Galactic)	1.15 × 10²¹ cm^-2
N_H (intrinsic)	1.8 (+3.7, -1.8) × 10²¹ cm^-2
z of absorber	1.2525
Photon index	1.96 (+0.21, -0.19)
Flux (0.3-10 keV) (Observed)	1.78 (+0.25, -0.22) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	2.27 (+0.25, -0.23) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.47 × 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?	191.68 (215)
Spectrum exposure	10.0 ks