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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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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

NH (Galactic)6.08 × 1020 cm-2
NH (intrinsic)4.3 (+0.9, -0.8) × 1021 cm-2
z of absorber0.6235
Photon index4.09 (+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 exposure94 s

PC mode. Mean photon arrival: T0+2394 s

NH (Galactic)6.08 × 1020 cm-2
NH (intrinsic)0 (+1.22 × 1021, -0) cm-2
z of absorber0.6235
Photon index2.22 (+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 exposure3.7 ks

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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

NH (Galactic)6.08 × 1020 cm-2
NH (intrinsic)1.0 (+5.6, -1.0) × 1021 cm-2
z of absorber0.6235
Photon index1.8 (+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 exposure2.3 ks

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