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Swift-XRT spectra of GRB 120923A

Last updated after receiving ObsID 00534402004, version 13

Data were analysed using HEASOFT version 6.32

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The spectral fits assume a redshift: 7.84 (Tanvir et al. 2017)

Jump to: Time-averaged|Late Time


Time-averaged spectrum (T0 + 143 to 57819 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+146 s

NH (Galactic)1.51 × 1021 cm-2
NH (intrinsic)7 (+32, -7) × 1023 cm-2
z of absorber7.84
Photon index5 (+4, -4)
Flux (0.3-10 keV)
(Observed)
4.2 (+4.4, -2.7) × 10-11 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
3.3 (+20.2, -2.6) × 10-10 erg cm-2 s-1
Counts to flux (obs)1.67 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)1.31 × 10-10 erg cm-2 ct-1
W-stat (dof)
What's this?
4.24 (4)
Spectrum exposure6 s

PC mode. Mean photon arrival: T0+3897 s

NH (Galactic)1.51 × 1021 cm-2
NH (intrinsic)5 (+41, -5) × 1022 cm-2
z of absorber7.84
Photon index1.73 (+0.45, -0.28)
Flux (0.3-10 keV)
(Observed)
7.5 (+1.8, -1.6) × 10-13 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
9.1 (+1.9, -1.4) × 10-13 erg cm-2 s-1
Counts to flux (obs)4.12 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)5.03 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
83.74 (104)
Spectrum exposure8.8 ks

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Late Time spectrum (T0 + 35205 to 57819 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+43510 s

NH (Galactic)1.51 × 1021 cm-2
NH (intrinsic)0 (+8.47 × 1023, -0) cm-2
z of absorber7.84
Photon index2.9 (+2.4, -1.5)
Flux (0.3-10 keV)
(Observed)
5.6 (+22.5, -2.9) × 10-14 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
1.09 (+1.17, -0.51) × 10-13 erg cm-2 s-1
Counts to flux (obs)2.94 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)5.79 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
9.77 (7)
Spectrum exposure7.4 ks

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