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Swift-XRT spectra of GRB 070724A

Last updated after receiving ObsID 00285948007, version 16

Data were analysed using HEASOFT version 6.29

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The spectral fits assume a redshift: 0.457 (GCN 6665)

Jump to: Time-averaged|Late Time


Time-averaged spectrum (T0 + 73 to 52810 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+98 s

NH (Galactic)1.21 × 1020 cm-2
NH (intrinsic)5.8 (+2.0, -1.7) × 1021 cm-2
z of absorber0.457
Photon index1.50 (+0.16, -0.15)
Flux (0.3-10 keV)
(Observed)
7.0 (+0.7, -0.7) × 10-10 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
8.3 (+0.7, -0.6) × 10-10 erg cm-2 s-1
Counts to flux (obs)4.78 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)5.69 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
291.80 (351)
Spectrum exposure57 s

PC mode. Mean photon arrival: T0+11172 s

NH (Galactic)1.21 × 1020 cm-2
NH (intrinsic)2.5 (+2.8, -2.0) × 1021 cm-2
z of absorber0.457
Photon index1.53 (+0.30, -0.28)
Flux (0.3-10 keV)
(Observed)
8.8 (+2.0, -1.6) × 10-13 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
9.8 (+1.7, -1.5) × 10-13 erg cm-2 s-1
Counts to flux (obs)4.47 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)5.02 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
145.90 (135)
Spectrum exposure23.1 ks

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Late Time spectrum (T0 + 4099 to 52810 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+25069 s

NH (Galactic)1.21 × 1020 cm-2
NH (intrinsic)5 (+33, -5) × 1020 cm-2
z of absorber0.457
Photon index1.5 (+0.5, -0.3)
Flux (0.3-10 keV)
(Observed)
2.3 (+0.8, -0.6) × 10-13 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
2.4 (+0.7, -0.5) × 10-13 erg cm-2 s-1
Counts to flux (obs)4.28 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)4.46 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
76.38 (66)
Spectrum exposure22.3 ks

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