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Swift-XRT spectra of GRB 090123

Last updated after receiving ObsID 00340895003, version 20

Data were analysed using HEASOFT version 6.32

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Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 106 to 59096 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+204 s

N_H (Galactic)	1.88 × 10²⁰ cm^-2
N_H (intrinsic)	7.2 (+17.3, -7.2) × 10¹⁹ cm^-2
z of absorber	0
Photon index	1.65 (+0.07, -0.06)
Flux (0.3-10 keV) (Observed)	4.85 (+0.24, -0.23) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	5.06 (+0.19, -0.17) × 10^-10 erg cm^-2 s^-1
Counts to flux (obs)	3.82 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	3.99 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	490.55 (538)
Spectrum exposure	330 s

PC mode. Mean photon arrival: T0+3885 s

N_H (Galactic)	1.88 × 10²⁰ cm^-2
N_H (intrinsic)	1.0 (+28.5, -1.0) × 10¹⁹ cm^-2
z of absorber	0
Photon index	1.673 (+0.127, -0.077)
Flux (0.3-10 keV) (Observed)	7.7 (+0.5, -0.6) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	8.0 (+0.5, -0.5) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.80 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	3.93 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	317.20 (360)
Spectrum exposure	11.5 ks

Late Time spectrum (T0 + 5589 to 59096 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+10211 s

N_H (Galactic)	1.88 × 10²⁰ cm^-2
N_H (intrinsic)	6 (+49, -6) × 10¹⁹ cm^-2
z of absorber	0
Photon index	1.99 (+0.24, -0.16)
Flux (0.3-10 keV) (Observed)	1.28 (+0.16, -0.17) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.37 (+0.17, -0.16) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.19 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	3.41 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	157.62 (179)
Spectrum exposure	9.6 ks