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Swift-XRT spectra of GRB 111229A

Last updated after receiving ObsID 00510736007, version 20

Data were analysed using HEASOFT version 6.32

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The spectral fits assume a redshift: 1.3805 (GCN 12777)

Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 86 to 22583 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+88 s

N_H (Galactic)	1.60 × 10²¹ cm^-2
N_H (intrinsic)	5 (+43, -5) × 10²¹ cm^-2
z of absorber	1.3805
Photon index	3.2 (+3.8, -1.4)
Flux (0.3-10 keV) (Observed)	1.41 (+1.47, -0.74) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	4.0 (+9.0, -2.6) × 10^-10 erg cm^-2 s^-1
Counts to flux (obs)	2.01 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	5.74 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	6.39 (9)
Spectrum exposure	5 s

PC mode. Mean photon arrival: T0+7027 s

N_H (Galactic)	1.60 × 10²¹ cm^-2
N_H (intrinsic)	6 (+5, -4) × 10²¹ cm^-2
z of absorber	1.3805
Photon index	1.94 (+0.15, -0.15)
Flux (0.3-10 keV) (Observed)	5.6 (+0.6, -0.5) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	7.7 (+0.6, -0.6) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.67 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	5.03 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	278.38 (312)
Spectrum exposure	6.7 ks

Late Time spectrum (T0 + 4409 to 22583 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+8433 s

N_H (Galactic)	1.60 × 10²¹ cm^-2
N_H (intrinsic)	5 (+5, -4) × 10²¹ cm^-2
z of absorber	1.3805
Photon index	1.84 (+0.17, -0.16)
Flux (0.3-10 keV) (Observed)	5.4 (+0.6, -0.5) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	7.0 (+0.6, -0.6) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.87 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	5.05 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	268.63 (293)
Spectrum exposure	6.2 ks