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Swift-XRT spectra of GRB 130131B

Last updated after receiving ObsID 00547420001, version 2.

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Time-averaged spectrum (T0 + 113 to 12110 s)

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PC mode spectrum of GRB 130131B

PC mode. Mean photon arrival: T0+2916 s

N_H (Galactic)	2.8 × 10²⁰ cm^-2
N_H (intrinsic)	3.6 (+1.2, -1.1) × 10²¹ cm^-2
z of absorber	0
Photon index	2.22 (+0.31, -0.29)
Flux (0.3-10 keV) (Observed)	4.84 (+0.75, -0.63) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	9.4 (+1.5, -1.2) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.9 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	7.6 × 10^-11 erg cm^-2 ct^-1
C-stat (dof)	171.60 (210)
Exposure time	5.1 ks

Late Time spectrum (T0 + 4000 to 12110 s)

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PC mode spectrum of GRB 130131B

PC mode. Mean photon arrival: T0+6641 s

N_H (Galactic)	2.8 × 10²⁰ cm^-2
N_H (intrinsic)	3.1 (+2.0, -1.6) × 10²¹ cm^-2
z of absorber	0
Photon index	2.10 (+0.49, -0.44)
Flux (0.3-10 keV) (Observed)	1.41 (+0.36, -0.28) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	2.43 (+0.56, -0.34) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	4.0 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	6.9 × 10^-11 erg cm^-2 ct^-1
C-stat (dof)	67.94 (107)
Exposure time	4.4 ks