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Swift-XRT spectra of GRB 100728B

Last updated after receiving ObsID 00430172005, version 8

Data were analysed using HEASOFT version 6.29

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The spectral fits assume a redshift: 2.106 (GCN 11317)

Jump to: Time-averaged|Late Time


Time-averaged spectrum (T0 + 100 to 23343 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+135 s

NH (Galactic)7.93 × 1020 cm-2
NH (intrinsic)9.7 (+12.2, -9.3) × 1021 cm-2
z of absorber2.106
Photon index1.81 (+0.26, -0.24)
Flux (0.3-10 keV)
(Observed)
2.1 (+0.4, -0.3) × 10-10 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
2.6 (+0.4, -0.3) × 10-10 erg cm-2 s-1
Counts to flux (obs)3.50 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)4.27 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
165.48 (206)
Spectrum exposure84 s

PC mode. Mean photon arrival: T0+7688 s

NH (Galactic)7.93 × 1020 cm-2
NH (intrinsic)6 (+6, -6) × 1021 cm-2
z of absorber2.106
Photon index1.97 (+0.17, -0.17)
Flux (0.3-10 keV)
(Observed)
2.60 (+0.30, -0.26) × 10-12 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
3.25 (+0.30, -0.28) × 10-12 erg cm-2 s-1
Counts to flux (obs)3.40 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)4.26 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
209.97 (252)
Spectrum exposure9.1 ks

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Late Time spectrum (T0 + 4002 to 23343 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+9436 s

NH (Galactic)7.93 × 1020 cm-2
NH (intrinsic)7 (+8, -7) × 1021 cm-2
z of absorber2.106
Photon index2.05 (+0.21, -0.20)
Flux (0.3-10 keV)
(Observed)
1.91 (+0.26, -0.22) × 10-12 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
2.48 (+0.28, -0.25) × 10-12 erg cm-2 s-1
Counts to flux (obs)3.28 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)4.25 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
158.03 (207)
Spectrum exposure8.5 ks

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