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Swift-XRT spectra of GRB 210822A

Last updated after receiving ObsID 01069788009, version 12

Data were analysed using HEASOFT version 6.32

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Add time-sliced spectrum.

The spectral fits assume a redshift: 1.736 (GCN 30692)

Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 78 to 96563 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+471 s

N_H (Galactic)	1.45 × 10²¹ cm^-2
N_H (intrinsic)	3.4 (+0.6, -0.6) × 10²¹ cm^-2
z of absorber	1.736
Photon index	1.774 (+0.017, -0.017)
Flux (0.3-10 keV) (Observed)	3.06 (+0.03, -0.03) × 10^-9 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	3.79 (+0.03, -0.03) × 10^-9 erg cm^-2 s^-1
Counts to flux (obs)	3.88 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.81 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	1002.61 (874)
Spectrum exposure	1.2 ks

PC mode. Mean photon arrival: T0+31160 s

N_H (Galactic)	1.45 × 10²¹ cm^-2
N_H (intrinsic)	4 (+4, -3) × 10²¹ cm^-2
z of absorber	1.736
Photon index	1.68 (+0.10, -0.09)
Flux (0.3-10 keV) (Observed)	1.25 (+0.09, -0.08) × 10^-11 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.51 (+0.08, -0.08) × 10^-11 erg cm^-2 s^-1
Counts to flux (obs)	4.13 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.99 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	408.36 (449)
Spectrum exposure	8.5 ks

Late Time spectrum (T0 + 4553 to 96563 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+31160 s

N_H (Galactic)	1.45 × 10²¹ cm^-2
N_H (intrinsic)	4 (+4, -3) × 10²¹ cm^-2
z of absorber	1.736
Photon index	1.68 (+0.10, -0.09)
Flux (0.3-10 keV) (Observed)	1.25 (+0.09, -0.08) × 10^-11 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.51 (+0.08, -0.08) × 10^-11 erg cm^-2 s^-1
Counts to flux (obs)	4.13 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.99 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	408.36 (449)
Spectrum exposure	8.5 ks