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Swift-XRT spectra of GRB 170202A

Last updated after receiving ObsID 00736407009, version 3

Data were analysed using HEASOFT version 6.35.2

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The spectral fits assume a redshift: 3.645 (GCN 20584)

Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 78 to 40775 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+117 s

N_H (Galactic)	1.98 × 10²⁰ cm^-2
N_H (intrinsic)	10 (+6, -6) × 10²¹ cm^-2
z of absorber	3.645
Photon index	1.95 (+0.09, -0.09)
Flux (0.3-10 keV) (Observed)	5.41 (+0.31, -0.29) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	6.01 (+0.28, -0.27) × 10^-10 erg cm^-2 s^-1
Counts to flux (obs)	3.21 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	3.57 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	406.19 (432)
Spectrum exposure	131 s

PC mode. Mean photon arrival: T0+9054 s

N_H (Galactic)	1.98 × 10²⁰ cm^-2
N_H (intrinsic)	5 (+9, -5) × 10²¹ cm^-2
z of absorber	3.645
Photon index	1.98 (+0.13, -0.12)
Flux (0.3-10 keV) (Observed)	9.5 (+0.8, -0.7) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.03 (+0.07, -0.07) × 10^-11 erg cm^-2 s^-1
Counts to flux (obs)	3.21 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	3.48 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	280.39 (308)
Spectrum exposure	6.6 ks

Late Time spectrum (T0 + 4976 to 40775 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+19899 s

N_H (Galactic)	1.98 × 10²⁰ cm^-2
N_H (intrinsic)	1.3 (+14.2, -1.3) × 10²¹ cm^-2
z of absorber	3.645
Photon index	1.86 (+0.19, -0.13)
Flux (0.3-10 keV) (Observed)	3.6 (+0.4, -0.4) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	3.8 (+0.4, -0.4) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.38 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	3.56 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	190.45 (206)
Spectrum exposure	4.9 ks