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Swift-XRT spectra of GRB 050724

Last updated after receiving ObsID 00147478010, version 5

Data were analysed using HEASOFT version 6.32

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The spectral fits assume a redshift: 0.257 (GCN 3679)

Jump to: Time-averaged|Late Time


Time-averaged spectrum (T0 + 79 to 111164 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+153 s

NH (Galactic)2.77 × 1021 cm-2
NH (intrinsic)5.5 (+0.7, -0.6) × 1021 cm-2
z of absorber0.257
Photon index1.72 (+0.05, -0.05)
Flux (0.3-10 keV)
(Observed)
2.23 (+0.06, -0.05) × 10-9 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
3.20 (+0.08, -0.08) × 10-9 erg cm-2 s-1
Counts to flux (obs)4.79 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)6.86 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
838.52 (754)
Spectrum exposure262 s

PC mode. Mean photon arrival: T0+33732 s

NH (Galactic)2.77 × 1021 cm-2
NH (intrinsic)0 (+1.27 × 1021, -0) cm-2
z of absorber0.257
Photon index1.68 (+0.16, -0.11)
Flux (0.3-10 keV)
(Observed)
1.48 (+0.14, -0.14) × 10-12 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
1.88 (+0.16, -0.13) × 10-12 erg cm-2 s-1
Counts to flux (obs)4.37 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)5.55 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
267.47 (328)
Spectrum exposure24.3 ks

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Late Time spectrum (T0 + 6068 to 111164 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+48372 s

NH (Galactic)2.77 × 1021 cm-2
NH (intrinsic)1.2 (+2.1, -1.2) × 1021 cm-2
z of absorber0.257
Photon index1.58 (+0.20, -0.19)
Flux (0.3-10 keV)
(Observed)
1.23 (+0.16, -0.14) × 10-12 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
1.55 (+0.16, -0.15) × 10-12 erg cm-2 s-1
Counts to flux (obs)4.83 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)6.08 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
219.88 (272)
Spectrum exposure22.3 ks

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