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Swift-XRT spectra of GRB 170318B

Last updated after receiving ObsID 00743086001, version 6

Data were analysed using HEASOFT version 6.35.2

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Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 80 to 41116 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+125 s

N_H (Galactic)	1.35 × 10²² cm^-2
N_H (intrinsic)	5.5 (+1.9, -1.6) × 10²² cm^-2
z of absorber	0
Photon index	1.6 (+0.4, -0.4)
Flux (0.3-10 keV) (Observed)	6.7 (+0.8, -0.8) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.5 (+0.8, -0.3) × 10^-9 erg cm^-2 s^-1
Counts to flux (obs)	9.56 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	2.08 × 10^-10 erg cm^-2 ct^-1
W-stat (dof) What's this?	293.37 (357)
Spectrum exposure	95 s

PC mode. Mean photon arrival: T0+1301 s

N_H (Galactic)	1.35 × 10²² cm^-2
N_H (intrinsic)	4.8 (+2.5, -2.0) × 10²² cm^-2
z of absorber	0
Photon index	2.2 (+0.7, -0.7)
Flux (0.3-10 keV) (Observed)	5.11 (+1.14, -0.91) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.90 (+2.79, -0.87) × 10^-11 erg cm^-2 s^-1
Counts to flux (obs)	8.34 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	3.09 × 10^-10 erg cm^-2 ct^-1
W-stat (dof) What's this?	111.80 (141)
Spectrum exposure	7.1 ks

Late Time spectrum (T0 + 4918 to 41116 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+9035 s

N_H (Galactic)	1.35 × 10²² cm^-2
N_H (intrinsic)	0 (+3.58 × 10²³, -0) cm^-2
z of absorber	0
Photon index	-0.4 (+3.4, -1.2)
Flux (0.3-10 keV) (Observed)	1.5 (+3.3, -1.4) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.6 (+4.7, -1.0) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.79 × 10^-10 erg cm^-2 ct^-1
Counts to flux (unabs)	3.96 × 10^-10 erg cm^-2 ct^-1
W-stat (dof) What's this?	15.83 (16)
Spectrum exposure	6.2 ks