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Swift-XRT spectra of GRB 130418A

Last updated after receiving ObsID 00553847007, version 9

Data were analysed using HEASOFT version 6.29

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Add time-sliced spectrum.

The spectral fits assume a redshift: 1.218 (GCN 14380)

Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 136 to 15644 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+232 s

N_H (Galactic)	2.93 × 10²⁰ cm^-2
N_H (intrinsic)	0 (+3.50 × 10²⁰, -0) cm^-2
z of absorber	1.218
Photon index	1.20 (+0.04, -0.04)
Flux (0.3-10 keV) (Observed)	8.61 (+0.34, -0.26) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	8.8 (+0.4, -0.3) × 10^-10 erg cm^-2 s^-1
Counts to flux (obs)	5.12 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	5.24 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	668.27 (634)
Spectrum exposure	217 s

PC mode. Mean photon arrival: T0+7661 s

N_H (Galactic)	2.93 × 10²⁰ cm^-2
N_H (intrinsic)	1.9 (+2.9, -1.9) × 10²¹ cm^-2
z of absorber	1.218
Photon index	1.58 (+0.18, -0.18)
Flux (0.3-10 keV) (Observed)	1.15 (+0.16, -0.14) × 10^-11 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.25 (+0.14, -0.13) × 10^-11 erg cm^-2 s^-1
Counts to flux (obs)	4.16 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.50 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	211.51 (241)
Spectrum exposure	2.5 ks

Late Time spectrum (T0 + 5389 to 15644 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+8912 s

N_H (Galactic)	2.93 × 10²⁰ cm^-2
N_H (intrinsic)	6 (+31, -6) × 10²⁰ cm^-2
z of absorber	1.218
Photon index	1.56 (+0.21, -0.16)
Flux (0.3-10 keV) (Observed)	9.6 (+1.5, -1.3) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.01 (+0.14, -0.12) × 10^-11 erg cm^-2 s^-1
Counts to flux (obs)	4.18 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.40 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	154.52 (198)
Spectrum exposure	2.1 ks