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Swift-XRT spectra of GRB 090727

Last updated after receiving ObsID 00358520026, version 16

Data were analysed using HEASOFT version 6.32

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Jump to: Time-averaged|Late Time


Time-averaged spectrum (T0 + 91 to 57842 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+276 s

NH (Galactic)3.91 × 1021 cm-2
NH (intrinsic)4.0 (+2.2, -1.9) × 1021 cm-2
z of absorber0
Photon index1.36 (+0.19, -0.18)
Flux (0.3-10 keV)
(Observed)
1.46 (+0.15, -0.14) × 10-9 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
1.86 (+0.16, -0.14) × 10-9 erg cm-2 s-1
Counts to flux (obs)6.31 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)8.06 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
315.78 (425)
Spectrum exposure51 s

PC mode. Mean photon arrival: T0+13914 s

NH (Galactic)3.91 × 1021 cm-2
NH (intrinsic)0 (+8.10 × 1020, -0) cm-2
z of absorber0
Photon index1.59 (+0.16, -0.12)
Flux (0.3-10 keV)
(Observed)
1.98 (+0.22, -0.22) × 10-12 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
2.52 (+0.24, -0.26) × 10-12 erg cm-2 s-1
Counts to flux (obs)4.97 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)6.35 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
199.38 (274)
Spectrum exposure24.0 ks

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Late Time spectrum (T0 + 4000 to 57842 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+24283 s

NH (Galactic)3.91 × 1021 cm-2
NH (intrinsic)0 (+1.29 × 1021, -0) cm-2
z of absorber0
Photon index2.04 (+0.33, -0.14)
Flux (0.3-10 keV)
(Observed)
5.7 (+0.8, -0.9) × 10-13 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
9.07 (+1.80, -0.67) × 10-13 erg cm-2 s-1
Counts to flux (obs)3.77 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)6.01 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
135.90 (167)
Spectrum exposure23.8 ks

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