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Swift-XRT spectra of GRB 191228A

Last updated after receiving ObsID 00946476004, version 7

Data were analysed using HEASOFT version 6.32

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Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 127 to 86307 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+186 s

N_H (Galactic)	3.80 × 10²⁰ cm^-2
N_H (intrinsic)	3.28 (+0.24, -0.23) × 10²¹ cm^-2
z of absorber	0
Photon index	1.98 (+0.05, -0.05)
Flux (0.3-10 keV) (Observed)	2.08 (+0.06, -0.06) × 10^-9 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	3.15 (+0.07, -0.09) × 10^-9 erg cm^-2 s^-1
Counts to flux (obs)	3.79 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	5.74 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	734.72 (716)
Spectrum exposure	216 s

PC mode. Mean photon arrival: T0+14131 s

N_H (Galactic)	3.80 × 10²⁰ cm^-2
N_H (intrinsic)	3.3 (+0.6, -0.6) × 10²¹ cm^-2
z of absorber	0
Photon index	2.22 (+0.15, -0.14)
Flux (0.3-10 keV) (Observed)	6.4 (+0.5, -0.4) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.11 (+0.08, -0.08) × 10^-11 erg cm^-2 s^-1
Counts to flux (obs)	3.41 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	5.95 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	339.80 (368)
Spectrum exposure	10.9 ks

Late Time spectrum (T0 + 5419 to 86307 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+16474 s

N_H (Galactic)	3.80 × 10²⁰ cm^-2
N_H (intrinsic)	3.5 (+0.7, -0.6) × 10²¹ cm^-2
z of absorber	0
Photon index	2.26 (+0.16, -0.15)
Flux (0.3-10 keV) (Observed)	5.4 (+0.4, -0.4) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	9.8 (+0.7, -0.8) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.39 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	6.15 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	321.70 (347)
Spectrum exposure	10.5 ks