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Swift-XRT spectra of GRB 180115A

Last updated after receiving ObsID 00805318006, version 4

Data were analysed using HEASOFT version 6.32

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Add time-sliced spectrum.

The spectral fits assume a redshift: 2.487 (GCN 22346)

Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 137 to 52517 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+170 s

N_H (Galactic)	1.68 × 10²⁰ cm^-2
N_H (intrinsic)	0 (+1.93 × 10²¹, -0) cm^-2
z of absorber	2.487
Photon index	2.18 (+0.12, -0.11)
Flux (0.3-10 keV) (Observed)	2.08 (+0.19, -0.17) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	2.21 (+0.18, -0.17) × 10^-10 erg cm^-2 s^-1
Counts to flux (obs)	2.87 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	3.04 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	212.79 (233)
Spectrum exposure	86 s

PC mode. Mean photon arrival: T0+5979 s

N_H (Galactic)	1.68 × 10²⁰ cm^-2
N_H (intrinsic)	1.6 (+3.5, -1.6) × 10²¹ cm^-2
z of absorber	2.487
Photon index	1.867 (+0.101, -0.090)
Flux (0.3-10 keV) (Observed)	6.2 (+0.4, -0.4) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	6.6 (+0.4, -0.4) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.42 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	3.62 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	323.52 (378)
Spectrum exposure	10.5 ks

Late Time spectrum (T0 + 4743 to 52517 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+11251 s

N_H (Galactic)	1.68 × 10²⁰ cm^-2
N_H (intrinsic)	7 (+6, -5) × 10²¹ cm^-2
z of absorber	2.487
Photon index	1.98 (+0.15, -0.14)
Flux (0.3-10 keV) (Observed)	3.03 (+0.30, -0.27) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	3.46 (+0.28, -0.26) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.26 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	3.72 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	238.25 (273)
Spectrum exposure	9.1 ks