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Swift-XRT spectra of GRB 070220

Last updated after receiving ObsID 00261299003, version 18

Data were analysed using HEASOFT version 6.32

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Jump to: Time-averaged|Late Time


Time-averaged spectrum (T0 + 85 to 41736 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+154 s

NH (Galactic)4.92 × 1021 cm-2
NH (intrinsic)2.5 (+0.8, -0.8) × 1021 cm-2
z of absorber0
Photon index1.44 (+0.08, -0.08)
Flux (0.3-10 keV)
(Observed)
1.29 (+0.05, -0.05) × 10-9 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
1.69 (+0.06, -0.06) × 10-9 erg cm-2 s-1
Counts to flux (obs)5.88 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)7.68 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
663.62 (712)
Spectrum exposure209 s

PC mode. Mean photon arrival: T0+6399 s

NH (Galactic)4.92 × 1021 cm-2
NH (intrinsic)3.0 (+1.1, -1.0) × 1021 cm-2
z of absorber0
Photon index1.51 (+0.11, -0.11)
Flux (0.3-10 keV)
(Observed)
1.31 (+0.08, -0.07) × 10-11 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
1.76 (+0.10, -0.09) × 10-11 erg cm-2 s-1
Counts to flux (obs)5.90 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)7.97 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
506.46 (582)
Spectrum exposure18.5 ks

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Late Time spectrum (T0 + 5063 to 41736 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+13335 s

NH (Galactic)4.92 × 1021 cm-2
NH (intrinsic)2.1 (+1.6, -1.4) × 1021 cm-2
z of absorber0
Photon index1.54 (+0.17, -0.16)
Flux (0.3-10 keV)
(Observed)
4.3 (+0.4, -0.4) × 10-12 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
5.8 (+0.5, -0.4) × 10-12 erg cm-2 s-1
Counts to flux (obs)5.65 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)7.62 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
359.83 (413)
Spectrum exposure17.0 ks

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