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Swift-XRT spectra of GRB 241228A

Last updated after receiving ObsID 01277277001, version 9

Data were analysed using HEASOFT version 6.32

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Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 100 to 34719 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+136 s

N_H (Galactic)	6.67 × 10²⁰ cm^-2
N_H (intrinsic)	1.6 (+0.7, -0.6) × 10²¹ cm^-2
z of absorber	0
Photon index	2.00 (+0.18, -0.17)
Flux (0.3-10 keV) (Observed)	4.4 (+0.5, -0.4) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	6.1 (+0.5, -0.5) × 10^-10 erg cm^-2 s^-1
Counts to flux (obs)	3.47 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.86 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	232.36 (326)
Spectrum exposure	83 s

PC mode. Mean photon arrival: T0+6793 s

N_H (Galactic)	6.67 × 10²⁰ cm^-2
N_H (intrinsic)	2.9 (+0.8, -0.7) × 10²¹ cm^-2
z of absorber	0
Photon index	1.84 (+0.15, -0.14)
Flux (0.3-10 keV) (Observed)	9.6 (+0.8, -0.7) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.35 (+0.09, -0.09) × 10^-11 erg cm^-2 s^-1
Counts to flux (obs)	4.29 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	6.03 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	326.73 (410)
Spectrum exposure	11.0 ks

Late Time spectrum (T0 + 4768 to 34719 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+11154 s

N_H (Galactic)	6.67 × 10²⁰ cm^-2
N_H (intrinsic)	3.15 (+1.13, -0.97) × 10²¹ cm^-2
z of absorber	0
Photon index	1.86 (+0.19, -0.18)
Flux (0.3-10 keV) (Observed)	4.2 (+0.5, -0.4) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	6.1 (+0.5, -0.6) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	4.30 × 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?	272.28 (318)
Spectrum exposure	9.6 ks