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Swift-XRT spectra of GRB 100418A

Last updated after receiving ObsID 00419797033, version 13

Data were analysed using HEASOFT version 6.32

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Add time-sliced spectrum.

The spectral fits assume a redshift: 0.6235 (GCN 10620)

Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 85 to 7342 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+111 s

N_H (Galactic)	6.08 × 10²⁰ cm^-2
N_H (intrinsic)	4.3 (+0.9, -0.8) × 10²¹ cm^-2
z of absorber	0.6235
Photon index	4.09 (+0.25, -0.23)
Flux (0.3-10 keV) (Observed)	3.10 (+0.16, -0.16) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.46 (+0.43, -0.30) × 10^-9 erg cm^-2 s^-1
Counts to flux (obs)	2.06 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	9.71 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	198.20 (208)
Spectrum exposure	94 s

PC mode. Mean photon arrival: T0+2394 s

N_H (Galactic)	6.08 × 10²⁰ cm^-2
N_H (intrinsic)	0 (+1.22 × 10²¹, -0) cm^-2
z of absorber	0.6235
Photon index	2.22 (+0.35, -0.19)
Flux (0.3-10 keV) (Observed)	1.34 (+0.24, -0.24) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.60 (+0.27, -0.23) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	2.92 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	3.51 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	91.60 (88)
Spectrum exposure	3.7 ks

Late Time spectrum (T0 + 5070 to 7342 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+6149 s

N_H (Galactic)	6.08 × 10²⁰ cm^-2
N_H (intrinsic)	1.0 (+5.6, -1.0) × 10²¹ cm^-2
z of absorber	0.6235
Photon index	1.8 (+0.8, -0.6)
Flux (0.3-10 keV) (Observed)	1.0 (+0.6, -0.4) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.2 (+0.6, -0.3) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	4.08 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.70 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	36.36 (35)
Spectrum exposure	2.3 ks