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Swift-XRT spectra of GRB 160917A

Last updated after receiving ObsID 00712505001, 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 + 99 to 27983 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+118 s

N_H (Galactic)	1.68 × 10²¹ cm^-2
N_H (intrinsic)	4.9 (+15.1, -4.9) × 10²⁰ cm^-2
z of absorber	0
Photon index	1.22 (+0.26, -0.22)
Flux (0.3-10 keV) (Observed)	5.67 (+1.03, -0.93) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	6.3 (+0.9, -0.8) × 10^-10 erg cm^-2 s^-1
Counts to flux (obs)	5.23 × 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?	202.94 (254)
Spectrum exposure	43 s

PC mode. Mean photon arrival: T0+5987 s

N_H (Galactic)	1.68 × 10²¹ cm^-2
N_H (intrinsic)	9.4 (+10.3, -8.9) × 10²⁰ cm^-2
z of absorber	0
Photon index	1.82 (+0.22, -0.21)
Flux (0.3-10 keV) (Observed)	2.8 (+0.4, -0.3) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	3.7 (+0.4, -0.4) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	4.04 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	5.36 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	205.33 (256)
Spectrum exposure	9.5 ks

Late Time spectrum (T0 + 4000 to 27983 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+8110 s

N_H (Galactic)	1.68 × 10²¹ cm^-2
N_H (intrinsic)	1.9 (+1.4, -1.2) × 10²¹ cm^-2
z of absorber	0
Photon index	2.15 (+0.31, -0.28)
Flux (0.3-10 keV) (Observed)	1.49 (+0.24, -0.20) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	2.5 (+0.6, -0.4) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.50 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	5.82 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	153.88 (190)
Spectrum exposure	8.9 ks