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Swift-XRT spectra of GRB 170822A

Last updated after receiving ObsID 00768939003, version 12

Data were analysed using HEASOFT version 6.32

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Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 169 to 23041 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+185 s

N_H (Galactic)	1.91 × 10²¹ cm^-2
N_H (intrinsic)	0 (+1.61 × 10²¹, -0) cm^-2
z of absorber	0
Photon index	1.47 (+0.37, -0.29)
Flux (0.3-10 keV) (Observed)	2.3 (+0.5, -0.5) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	2.7 (+0.5, -0.6) × 10^-10 erg cm^-2 s^-1
Counts to flux (obs)	4.41 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	5.08 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	55.26 (99)
Spectrum exposure	32 s

PC mode. Mean photon arrival: T0+6205 s

N_H (Galactic)	1.91 × 10²¹ cm^-2
N_H (intrinsic)	1.3 (+0.4, -0.4) × 10²¹ cm^-2
z of absorber	0
Photon index	1.74 (+0.08, -0.08)
Flux (0.3-10 keV) (Observed)	3.87 (+0.19, -0.18) × 10^-11 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	5.14 (+0.22, -0.20) × 10^-11 erg cm^-2 s^-1
Counts to flux (obs)	4.36 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	5.79 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	513.03 (572)
Spectrum exposure	8.8 ks

Late Time spectrum (T0 + 5646 to 23041 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+9959 s

N_H (Galactic)	1.91 × 10²¹ cm^-2
N_H (intrinsic)	1.3 (+0.6, -0.5) × 10²¹ cm^-2
z of absorber	0
Photon index	1.83 (+0.12, -0.11)
Flux (0.3-10 keV) (Observed)	1.94 (+0.13, -0.12) × 10^-11 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	2.67 (+0.16, -0.14) × 10^-11 erg cm^-2 s^-1
Counts to flux (obs)	4.14 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	5.69 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	387.17 (455)
Spectrum exposure	6.6 ks