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Swift-XRT spectra of GRB 131231A

Last updated after receiving ObsID 00020336007, version 7

Data were analysed using HEASOFT version 6.32

About these products.

Get another burst.

Add time-sliced spectrum.

The spectral fits assume a redshift: 0.642 (GCN 15645)

Time-averaged spectrum (T0 + 52149 to 62468 s)

Download spectral files for Time-averaged spectrum.

Plots to download

PC mode spectrum of Time-averaged

PC mode. Mean photon arrival: T0+57336 s

N_H (Galactic)	2.80 × 10²⁰ cm^-2
N_H (intrinsic)	2.8 (+1.2, -1.1) × 10²¹ cm^-2
z of absorber	0.642
Photon index	1.77 (+0.15, -0.14)
Flux (0.3-10 keV) (Observed)	1.77 (+0.18, -0.17) × 10^-11 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	2.10 (+0.16, -0.15) × 10^-11 erg cm^-2 s^-1
Counts to flux (obs)	3.10 × 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?	269.02 (312)
Spectrum exposure	4.0 ks