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Swift-XRT spectra of GRB 090912

Last updated after receiving ObsID 00362633001, version 11

Data were analysed using HEASOFT version 6.32

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Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 796 to 70762 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+799 s

Can't find a valid fit for this spectrum

PC mode. Mean photon arrival: T0+22017 s

N_H (Galactic)	1.34 × 10²⁰ cm^-2
N_H (intrinsic)	8.1 (+1.4, -1.3) × 10²¹ cm^-2
z of absorber	0
Photon index	2.02 (+0.17, -0.16)
Flux (0.3-10 keV) (Observed)	3.03 (+0.25, -0.23) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	5.5 (+0.7, -0.5) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	4.50 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	8.21 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	386.52 (402)
Spectrum exposure	22.9 ks

Late Time spectrum (T0 + 6686 to 70762 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+31619 s

N_H (Galactic)	1.34 × 10²⁰ cm^-2
N_H (intrinsic)	7.9 (+1.6, -1.5) × 10²¹ cm^-2
z of absorber	0
Photon index	2.13 (+0.21, -0.20)
Flux (0.3-10 keV) (Observed)	1.89 (+0.19, -0.17) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	3.7 (+0.7, -0.4) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	4.23 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	8.31 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	279.31 (340)
Spectrum exposure	21.6 ks