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Swift-XRT spectra of GRB 061222B

Last updated after receiving ObsID 00252593004, version 18

Data were analysed using HEASOFT version 6.35.2

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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

N_H (Galactic)	3.97 × 10²¹ cm^-2
N_H (intrinsic)	5.2 (+2.8, -2.4) × 10²² cm^-2
z of absorber	3.36
Photon index	2.56 (+0.15, -0.14)
Flux (0.3-10 keV) (Observed)	3.03 (+0.23, -0.22) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	7.60 (+1.10, -0.84) × 10^-10 erg cm^-2 s^-1
Counts to flux (obs)	2.99 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	7.51 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	308.12 (360)
Spectrum exposure	119 s

PC mode. Mean photon arrival: T0+2430 s

N_H (Galactic)	3.97 × 10²¹ cm^-2
N_H (intrinsic)	7 (+5, -7) × 10²² cm^-2
z of absorber	3.36
Photon index	1.81 (+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 exposure	8.9 ks

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

N_H (Galactic)	3.97 × 10²¹ cm^-2
N_H (intrinsic)	0 (+2.99 × 10²³, -0) cm^-2
z of absorber	3.36
Photon index	1.78 (+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 exposure	8.3 ks