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Swift-XRT spectra of GRB 200917A

Last updated after receiving ObsID 00996184004, version 10

Data were analysed using HEASOFT version 6.32

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Add time-sliced spectrum.

Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 104 to 40504 s)

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PC mode spectrum of Time-averaged

WT mode. Mean photon arrival: T0+108 s

Can't find a valid fit for this spectrum

PC mode. Mean photon arrival: T0+8398 s

N_H (Galactic)	1.49 × 10²¹ cm^-2
N_H (intrinsic)	9.4 (+2.3, -2.0) × 10²¹ cm^-2
z of absorber	0
Photon index	2.32 (+0.25, -0.24)
Flux (0.3-10 keV) (Observed)	3.7 (+0.4, -0.4) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	9.2 (+2.8, -1.3) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	4.18 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	1.05 × 10^-10 erg cm^-2 ct^-1
W-stat (dof) What's this?	254.33 (288)
Spectrum exposure	8.0 ks

Late Time spectrum (T0 + 5137 to 40504 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+12420 s

N_H (Galactic)	1.49 × 10²¹ cm^-2
N_H (intrinsic)	9.9 (+3.1, -2.7) × 10²¹ cm^-2
z of absorber	0
Photon index	2.23 (+0.32, -0.30)
Flux (0.3-10 keV) (Observed)	3.2 (+0.5, -0.4) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	7.5 (+2.8, -1.1) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	4.43 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	1.04 × 10^-10 erg cm^-2 ct^-1
W-stat (dof) What's this?	170.18 (229)
Spectrum exposure	6.3 ks