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Swift-XRT spectra of GRB 170921A

Last updated after receiving ObsID 00773509002, version 5

Data were analysed using HEASOFT version 6.28

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Jump to: Time-averaged|Late Time


Time-averaged spectrum (T0 + 104 to 81793 s)

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PC mode spectrum of Time-averaged

PC mode. Mean photon arrival: T0+4901 s

NH (Galactic)5.49 × 1020 cm-2
NH (intrinsic)9.3 (+2.5, -2.2) × 1021 cm-2
z of absorber0
Photon index2.6 (+0.3, -0.3)
Flux (0.3-10 keV)
(Observed)
1.08 (+0.16, -0.14) × 10-12 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
2.4 (+7.6, +1.8) × 10-12 erg cm-2 s-1
Counts to flux (obs)3.60 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)7.95 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
184.08 (200)
Spectrum exposure14.0 ks

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Late Time spectrum (T0 + 4770 to 81793 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+17961 s

NH (Galactic)5.49 × 1020 cm-2
NH (intrinsic)7 (+4, -3) × 1021 cm-2
z of absorber0
Photon index2.7 (+0.8, -0.6)
Flux (0.3-10 keV)
(Observed)
2.7 (+0.9, -0.6) × 10-13 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
3.6 (+34.8, -1.2) × 10-13 erg cm-2 s-1
Counts to flux (obs)3.12 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)4.24 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
69.46 (68)
Spectrum exposure12.6 ks

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