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Swift-XRT spectra of GRB 090531B

Last updated after receiving ObsID 00353728002, version 19

Data were analysed using HEASOFT version 6.28

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Jump to: Time-averaged|Late Time


Time-averaged spectrum (T0 + 3803 to 32637 s)

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PC mode spectrum of Time-averaged

PC mode. Mean photon arrival: T0+7480 s

NH (Galactic)4.46 × 1021 cm-2
NH (intrinsic)1.1 (+2.1, -1.0) × 1022 cm-2
z of absorber0
Photon index2.5 (+1.9, -1.5)
Flux (0.3-10 keV)
(Observed)
2.9 (+2.5, -1.2) × 10-13 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
1.2 (+8.6, -0.8) × 10-12 erg cm-2 s-1
Counts to flux (obs)4.89 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)1.99 × 10-10 erg cm-2 ct-1
W-stat (dof)
What's this?
27.20 (23)
Spectrum exposure5.7 ks

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Late Time spectrum (T0 + 4001 to 32637 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+8466 s

NH (Galactic)4.46 × 1021 cm-2
NH (intrinsic)5.8 (+21.2, -5.8) × 1021 cm-2
z of absorber0
Photon index2.0 (+2.4, -1.4)
Flux (0.3-10 keV)
(Observed)
2.9 (+3.5, -1.5) × 10-13 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
5.7 (+31.0, -2.8) × 10-13 erg cm-2 s-1
Counts to flux (obs)5.89 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)1.17 × 10-10 erg cm-2 ct-1
W-stat (dof)
What's this?
17.95 (18)
Spectrum exposure5.5 ks

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