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Swift-XRT spectra of GRB 090510

Last updated after receiving ObsID 00351588001, version 20

Data were analysed using HEASOFT version 6.32

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The spectral fits assume a redshift: 0.903 (GCN 9353)

Jump to: Time-averaged|Late Time


Time-averaged spectrum (T0 + 97 to 92256 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+179 s

NH (Galactic)1.77 × 1020 cm-2
NH (intrinsic)2.1 (+1.4, -1.3) × 1021 cm-2
z of absorber0.903
Photon index1.73 (+0.14, -0.14)
Flux (0.3-10 keV)
(Observed)
2.12 (+0.22, -0.20) × 10-10 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
2.36 (+0.19, -0.18) × 10-10 erg cm-2 s-1
Counts to flux (obs)3.67 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)4.09 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
311.41 (340)
Spectrum exposure172 s

PC mode. Mean photon arrival: T0+2565 s

NH (Galactic)1.77 × 1020 cm-2
NH (intrinsic)10.0 (+11.2, -10.0) × 1020 cm-2
z of absorber0.903
Photon index1.68 (+0.12, -0.12)
Flux (0.3-10 keV)
(Observed)
3.60 (+0.31, -0.29) × 10-12 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
3.84 (+0.27, -0.25) × 10-12 erg cm-2 s-1
Counts to flux (obs)3.83 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)4.10 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
313.97 (359)
Spectrum exposure31.0 ks

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Late Time spectrum (T0 + 5234 to 92256 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+11431 s

NH (Galactic)1.77 × 1020 cm-2
NH (intrinsic)2.8 (+3.6, -2.8) × 1021 cm-2
z of absorber0.903
Photon index2.0 (+0.4, -0.3)
Flux (0.3-10 keV)
(Observed)
2.7 (+0.6, -0.5) × 10-13 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
3.2 (+0.6, -0.5) × 10-13 erg cm-2 s-1
Counts to flux (obs)3.20 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)3.87 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
81.15 (120)
Spectrum exposure29.3 ks

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