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Swift-XRT spectra of GRB 151228B

Last updated after receiving ObsID 00668641008, version 6

Data were analysed using HEASOFT version 6.32

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Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 55 to 29005 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+106 s

N_H (Galactic)	5.75 × 10²⁰ cm^-2
N_H (intrinsic)	1.27 (+0.20, -0.19) × 10²¹ cm^-2
z of absorber	0
Photon index	2.44 (+0.08, -0.08)
Flux (0.3-10 keV) (Observed)	1.30 (+0.05, -0.04) × 10^-9 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	2.17 (+0.08, -0.07) × 10^-9 erg cm^-2 s^-1
Counts to flux (obs)	2.78 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.62 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	486.43 (503)
Spectrum exposure	194 s

PC mode. Mean photon arrival: T0+7570 s

N_H (Galactic)	5.75 × 10²⁰ cm^-2
N_H (intrinsic)	0 (+2.20 × 10²⁰, -0) cm^-2
z of absorber	0
Photon index	1.896 (+0.186, -0.090)
Flux (0.3-10 keV) (Observed)	2.30 (+0.25, -0.27) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	2.49 (+0.25, -0.26) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.40 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	3.68 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	188.35 (214)
Spectrum exposure	10.0 ks

Late Time spectrum (T0 + 4686 to 29005 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+12496 s

N_H (Galactic)	5.75 × 10²⁰ cm^-2
N_H (intrinsic)	8 (+75, -8) × 10¹⁹ cm^-2
z of absorber	0
Photon index	1.90 (+0.30, -0.19)
Flux (0.3-10 keV) (Observed)	1.32 (+0.20, -0.21) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.50 (+0.22, -0.18) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.47 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	3.96 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	110.43 (156)
Spectrum exposure	8.9 ks