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Swift-XRT spectra of GRB 050904

Last updated after receiving ObsID 00153514007, version 30

Data were analysed using HEASOFT version 6.32

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The spectral fits assume a redshift: 6.29 (GCN 3937)

Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 168 to 59656 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+336 s

N_H (Galactic)	5.64 × 10²⁰ cm^-2
N_H (intrinsic)	3.3 (+1.5, -1.4) × 10²² cm^-2
z of absorber	6.29
Photon index	1.36 (+0.03, -0.03)
Flux (0.3-10 keV) (Observed)	1.27 (+0.03, -0.03) × 10^-9 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.364 (+0.030, -0.029) × 10^-9 erg cm^-2 s^-1
Counts to flux (obs)	4.70 × 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?	787.41 (772)
Spectrum exposure	411 s

PC mode. Mean photon arrival: T0+16679 s

N_H (Galactic)	5.64 × 10²⁰ cm^-2
N_H (intrinsic)	1.7 (+1.6, -1.5) × 10²² cm^-2
z of absorber	6.29
Photon index	1.81 (+0.05, -0.05)
Flux (0.3-10 keV) (Observed)	1.37 (+0.05, -0.05) × 10^-11 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.54 (+0.05, -0.04) × 10^-11 erg cm^-2 s^-1
Counts to flux (obs)	3.55 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.01 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	596.28 (617)
Spectrum exposure	22.3 ks

Late Time spectrum (T0 + 4960 to 59656 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+19018 s

N_H (Galactic)	5.64 × 10²⁰ cm^-2
N_H (intrinsic)	2.3 (+1.7, -1.7) × 10²² cm^-2
z of absorber	6.29
Photon index	1.83 (+0.06, -0.06)
Flux (0.3-10 keV) (Observed)	1.16 (+0.04, -0.04) × 10^-11 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.33 (+0.04, -0.04) × 10^-11 erg cm^-2 s^-1
Counts to flux (obs)	3.53 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.03 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	547.89 (592)
Spectrum exposure	21.1 ks