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Swift-XRT spectra of GRB 060904B

Last updated after receiving ObsID 00228006008, version 19

Data were analysed using HEASOFT version 6.29

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The spectral fits assume a redshift: 0.7 (GCN 5513)

Jump to: Time-averaged|Late Time


Time-averaged spectrum (T0 + 76 to 40807 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+205 s

NH (Galactic)1.94 × 1021 cm-2
NH (intrinsic)4.4 (+0.6, -0.5) × 1021 cm-2
z of absorber0.7
Photon index2.09 (+0.04, -0.04)
Flux (0.3-10 keV)
(Observed)
2.89 (+0.07, -0.07) × 10-9 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
4.52 (+0.11, -0.11) × 10-9 erg cm-2 s-1
Counts to flux (obs)3.51 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)5.49 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
706.57 (695)
Spectrum exposure225 s

PC mode. Mean photon arrival: T0+11200 s

NH (Galactic)1.94 × 1021 cm-2
NH (intrinsic)2.8 (+1.8, -1.6) × 1021 cm-2
z of absorber0.7
Photon index2.05 (+0.15, -0.14)
Flux (0.3-10 keV)
(Observed)
2.43 (+0.22, -0.20) × 10-12 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
3.63 (+0.31, -0.27) × 10-12 erg cm-2 s-1
Counts to flux (obs)3.53 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)5.26 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
298.04 (328)
Spectrum exposure15.6 ks

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Late Time spectrum (T0 + 4000 to 40807 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+11628 s

NH (Galactic)1.94 × 1021 cm-2
NH (intrinsic)2.7 (+1.8, -1.6) × 1021 cm-2
z of absorber0.7
Photon index2.06 (+0.15, -0.15)
Flux (0.3-10 keV)
(Observed)
2.31 (+0.22, -0.19) × 10-12 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
3.45 (+0.31, -0.27) × 10-12 erg cm-2 s-1
Counts to flux (obs)3.51 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)5.24 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
298.66 (320)
Spectrum exposure15.3 ks

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