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Swift-XRT spectra of GRB 090927

Last updated after receiving ObsID 00370846008, version 13

Data were analysed using HEASOFT version 6.32

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Add time-sliced spectrum.

The spectral fits assume a redshift: 1.37 (GCN 9958)

Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 2143 to 33130 s)

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PC mode spectrum of Time-averaged

PC mode. Mean photon arrival: T0+13218 s

N_H (Galactic)	3.22 × 10²⁰ cm^-2
N_H (intrinsic)	2.0 (+2.7, -2.0) × 10²¹ cm^-2
z of absorber	1.37
Photon index	1.95 (+0.19, -0.18)
Flux (0.3-10 keV) (Observed)	1.75 (+0.22, -0.19) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	2.00 (+0.20, -0.19) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.34 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	3.81 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	166.02 (241)
Spectrum exposure	11.6 ks

Late Time spectrum (T0 + 7916 to 33130 s)

Download spectral files for Late Time spectrum.

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+16071 s

N_H (Galactic)	3.22 × 10²⁰ cm^-2
N_H (intrinsic)	3.4 (+3.3, -2.9) × 10²¹ cm^-2
z of absorber	1.37
Photon index	2.05 (+0.22, -0.21)
Flux (0.3-10 keV) (Observed)	1.41 (+0.20, -0.17) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.70 (+0.20, -0.18) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.19 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	3.86 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	136.47 (210)
Spectrum exposure	10.2 ks