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Swift-XRT spectra of GRB 051221B

Last updated after receiving ObsID 00173904002, version 13

Data were analysed using HEASOFT version 6.35.2

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Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 281 to 6461 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+284 s

N_H (Galactic)	6.05 × 10²¹ cm^-2
N_H (intrinsic)	0 (+2.01 × 10²², -0) cm^-2
z of absorber	0
Photon index	0.51 (+1.37, -0.65)
Flux (0.3-10 keV) (Observed)	3.7 (+2.6, -1.9) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	4.0 (+2.6, -1.7) × 10^-10 erg cm^-2 s^-1
Counts to flux (obs)	1.04 × 10^-10 erg cm^-2 ct^-1
Counts to flux (unabs)	1.13 × 10^-10 erg cm^-2 ct^-1
W-stat (dof) What's this?	15.72 (15)
Spectrum exposure	7 s

PC mode. Mean photon arrival: T0+386 s

N_H (Galactic)	6.05 × 10²¹ cm^-2
N_H (intrinsic)	1.6 (+2.5, -1.5) × 10²² cm^-2
z of absorber	0
Photon index	2.0 (+1.3, -1.0)
Flux (0.3-10 keV) (Observed)	1.7 (+0.9, -0.5) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	3.6 (+15.4, -1.4) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	6.31 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	1.36 × 10^-10 erg cm^-2 ct^-1
W-stat (dof) What's this?	44.78 (39)
Spectrum exposure	2.8 ks

Late Time spectrum (T0 + 4002 to 6461 s)

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PC mode. Mean photon arrival: T0+5518 s

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