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Swift-XRT spectra of GRB 171216A

Last updated after receiving ObsID 00797441001, version 7

Data were analysed using HEASOFT version 6.35.2

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Add time-sliced spectrum.

Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 134 to 17558 s)

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PC mode spectrum of Time-averaged

PC mode. Mean photon arrival: T0+2225 s

N_H (Galactic)	2.84 × 10²¹ cm^-2
N_H (intrinsic)	0 (+3.94 × 10²⁰, -0) cm^-2
z of absorber	0
Photon index	1.79 (+0.16, -0.12)
Flux (0.3-10 keV) (Observed)	7.2 (+1.0, -0.7) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	9.1 (+1.3, -1.2) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	4.11 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	5.19 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	180.45 (232)
Spectrum exposure	4.6 ks

Late Time spectrum (T0 + 5000 to 17558 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+7351 s

N_H (Galactic)	2.84 × 10²¹ cm^-2
N_H (intrinsic)	5 (+310, -5) × 10¹⁹ cm^-2
z of absorber	0
Photon index	1.71 (+0.55, -0.29)
Flux (0.3-10 keV) (Observed)	1.6 (+0.4, -0.4) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	2.0 (+0.6, -0.4) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	4.39 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	5.67 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	54.29 (81)
Spectrum exposure	3.5 ks