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Swift-XRT spectra of GRB 150428B

Last updated after receiving ObsID 00639278008, version 5

Data were analysed using HEASOFT version 6.32

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Jump to: Time-averaged|Late Time


Time-averaged spectrum (T0 + 113 to 34672 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+160 s

NH (Galactic)3.26 × 1021 cm-2
NH (intrinsic)5.5 (+2.8, -2.7) × 1020 cm-2
z of absorber0
Photon index1.96 (+0.06, -0.06)
Flux (0.3-10 keV)
(Observed)
1.70 (+0.05, -0.05) × 10-9 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
2.56 (+0.07, -0.06) × 10-9 erg cm-2 s-1
Counts to flux (obs)3.88 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)5.85 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
630.55 (687)
Spectrum exposure187 s

PC mode. Mean photon arrival: T0+8073 s

NH (Galactic)3.26 × 1021 cm-2
NH (intrinsic)0 (+4.07 × 1020, -0) cm-2
z of absorber0
Photon index1.89 (+0.13, -0.11)
Flux (0.3-10 keV)
(Observed)
3.5 (+0.3, -0.3) × 10-12 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
4.8 (+0.3, -0.6) × 10-12 erg cm-2 s-1
Counts to flux (obs)4.01 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)5.42 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
238.39 (293)
Spectrum exposure8.4 ks

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Late Time spectrum (T0 + 4804 to 34672 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+13376 s

NH (Galactic)3.26 × 1021 cm-2
NH (intrinsic)5.4 (+14.5, -5.4) × 1020 cm-2
z of absorber0
Photon index1.86 (+0.27, -0.22)
Flux (0.3-10 keV)
(Observed)
2.4 (+0.4, -0.3) × 10-12 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
3.4 (+0.5, -0.4) × 10-12 erg cm-2 s-1
Counts to flux (obs)4.19 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)6.00 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
173.35 (203)
Spectrum exposure7.1 ks

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