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Swift-XRT spectra of GRB 090111

Last updated after receiving ObsID 00339696001, version 8

Data were analysed using HEASOFT version 6.32

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Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 82 to 42213 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+101 s

N_H (Galactic)	9.98 × 10²⁰ cm^-2
N_H (intrinsic)	4.6 (+0.7, -0.6) × 10²¹ cm^-2
z of absorber	0
Photon index	4.55 (+0.30, -0.27)
Flux (0.3-10 keV) (Observed)	4.34 (+0.22, -0.21) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	7.8 (+3.4, -2.0) × 10^-9 erg cm^-2 s^-1
Counts to flux (obs)	1.95 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	3.52 × 10^-10 erg cm^-2 ct^-1
W-stat (dof) What's this?	196.88 (226)
Spectrum exposure	66 s

PC mode. Mean photon arrival: T0+9829 s

N_H (Galactic)	9.98 × 10²⁰ cm^-2
N_H (intrinsic)	1.1 (+0.6, -0.5) × 10²¹ cm^-2
z of absorber	0
Photon index	2.50 (+0.22, -0.21)
Flux (0.3-10 keV) (Observed)	1.39 (+0.14, -0.13) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	2.46 (+0.63, -0.28) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	2.75 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.90 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	234.54 (240)
Spectrum exposure	18.3 ks

Late Time spectrum (T0 + 5130 to 42213 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+17735 s

N_H (Galactic)	9.98 × 10²⁰ cm^-2
N_H (intrinsic)	1.85 (+1.16, -0.99) × 10²¹ cm^-2
z of absorber	0
Photon index	2.17 (+0.30, -0.28)
Flux (0.3-10 keV) (Observed)	8.4 (+1.3, -1.1) × 10^-13 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.34 (+0.14, -0.17) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.31 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	5.29 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	194.75 (191)
Spectrum exposure	16.8 ks