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Swift-XRT spectra of GRB 200228B

Last updated after receiving ObsID 00958733001, version 7

Data were analysed using HEASOFT version 6.28

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Add time-sliced spectrum.

Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 143 to 18232 s)

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PC mode spectrum of Time-averaged

PC mode. Mean photon arrival: T0+7159 s

N_H (Galactic)	6.39 × 10²⁰ cm^-2
N_H (intrinsic)	1.5 (+0.8, -0.6) × 10²² cm^-2
z of absorber	0
Photon index	3.0 (+0.8, -0.7)
Flux (0.3-10 keV) (Observed)	9.6 (+2.6, -2.0) × 10^-13 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	3.3 (+54.7, -1.4) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.57 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	1.23 × 10^-10 erg cm^-2 ct^-1
W-stat (dof) What's this?	83.30 (83)
Spectrum exposure	4.6 ks

Late Time spectrum (T0 + 4574 to 18232 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+8700 s

N_H (Galactic)	6.39 × 10²⁰ cm^-2
N_H (intrinsic)	1.2 (+0.8, -0.6) × 10²² cm^-2
z of absorber	0
Photon index	2.6 (+0.9, -0.7)
Flux (0.3-10 keV) (Observed)	8.8 (+3.4, -2.2) × 10^-13 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.79 (+17.40, -0.96) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.89 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	7.92 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	76.68 (70)
Spectrum exposure	4.5 ks