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Swift-XRT spectra of GRB 080520

Last updated after receiving ObsID 00312047003, version 22

Data were analysed using HEASOFT version 6.32

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The spectral fits assume a redshift: 1.55 (GCN 7757)

Jump to: Time-averaged|Late Time


Time-averaged spectrum (T0 + 106 to 45970 s)

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PC mode spectrum of Time-averaged

PC mode. Mean photon arrival: T0+3505 s

NH (Galactic)8.75 × 1020 cm-2
NH (intrinsic)2.1 (+1.4, -1.1) × 1022 cm-2
z of absorber1.55
Photon index2.1 (+0.3, -0.3)
Flux (0.3-10 keV)
(Observed)
1.26 (+0.26, -0.21) × 10-12 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
1.91 (+0.40, -0.27) × 10-12 erg cm-2 s-1
Counts to flux (obs)3.63 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)5.50 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
101.87 (152)
Spectrum exposure8.6 ks

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Late Time spectrum (T0 + 5411 to 45970 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+13493 s

NH (Galactic)8.75 × 1020 cm-2
NH (intrinsic)5 (+7, -4) × 1022 cm-2
z of absorber1.55
Photon index2.2 (+0.9, -0.8)
Flux (0.3-10 keV)
(Observed)
3.1 (+1.6, -1.0) × 10-13 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
5.9 (+10.0, -2.1) × 10-13 erg cm-2 s-1
Counts to flux (obs)3.72 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)7.17 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
38.18 (41)
Spectrum exposure7.4 ks

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