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Swift-XRT spectra of GRB 171020A

Last updated after receiving ObsID 00780845004, version 9

Data were analysed using HEASOFT version 6.35.2

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Add time-sliced spectrum.

The spectral fits assume a redshift: 1.87 (GCN 22039)

Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 151 to 52316 s)

Download spectral files for Time-averaged spectrum.

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PC mode spectrum of Time-averaged

PC mode. Mean photon arrival: T0+8223 s

N_H (Galactic)	1.55 × 10²¹ cm^-2
N_H (intrinsic)	2.0 (+7.0, -2.0) × 10²¹ cm^-2
z of absorber	1.87
Photon index	1.56 (+0.15, -0.13)
Flux (0.3-10 keV) (Observed)	4.1 (+0.5, -0.4) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	4.7 (+0.4, -0.4) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	4.47 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	5.21 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	269.49 (310)
Spectrum exposure	12.2 ks

Late Time spectrum (T0 + 5211 to 52316 s)

Download spectral files for Late Time spectrum.

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+21722 s

N_H (Galactic)	1.55 × 10²¹ cm^-2
N_H (intrinsic)	1.7 (+1.9, -1.4) × 10²² cm^-2
z of absorber	1.87
Photon index	1.96 (+0.32, -0.29)
Flux (0.3-10 keV) (Observed)	9.6 (+2.0, -1.6) × 10^-13 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.37 (+0.26, -0.19) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.66 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	5.24 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	99.97 (147)
Spectrum exposure	10.4 ks