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Swift-XRT spectra of GRB 061222B

Last updated after receiving ObsID 00252593004, version 18

Data were analysed using HEASOFT version 6.32

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The spectral fits assume a redshift: 3.36 (GCN 5962)

Jump to: Time-averaged|Late Time


Time-averaged spectrum (T0 + 151 to 58733 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+193 s

NH (Galactic)3.97 × 1021 cm-2
NH (intrinsic)5.1 (+2.7, -2.3) × 1022 cm-2
z of absorber3.36
Photon index2.55 (+0.15, -0.14)
Flux (0.3-10 keV)
(Observed)
3.05 (+0.23, -0.22) × 10-10 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
7.57 (+1.08, -0.82) × 10-10 erg cm-2 s-1
Counts to flux (obs)3.01 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)7.48 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
309.57 (360)
Spectrum exposure119 s

PC mode. Mean photon arrival: T0+2430 s

NH (Galactic)3.97 × 1021 cm-2
NH (intrinsic)7 (+5, -7) × 1022 cm-2
z of absorber3.36
Photon index1.81 (+0.20, -0.28)
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 (+0.6, -0.3) × 10-12 erg cm-2 s-1
Counts to flux (obs)4.60 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)6.46 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
200.68 (218)
Spectrum exposure8.9 ks

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Late Time spectrum (T0 + 4144 to 58733 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+25092 s

NH (Galactic)3.97 × 1021 cm-2
NH (intrinsic)0 (+2.99 × 1023, -0) cm-2
z of absorber3.36
Photon index1.78 (+1.12, -0.69)
Flux (0.3-10 keV)
(Observed)
1.3 (+0.9, -0.6) × 10-13 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
1.84 (+1.66, -0.69) × 10-13 erg cm-2 s-1
Counts to flux (obs)4.51 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)6.33 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
22.04 (22)
Spectrum exposure8.3 ks

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