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Swift-XRT spectra of GRB 050401

Last updated after receiving ObsID 00113120006, version 19

Data were analysed using HEASOFT version 6.32

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Add time-sliced spectrum.

The spectral fits assume a redshift: 2.9 (GCN 3176)

Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 133 to 20112 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+978 s

N_H (Galactic)	5.45 × 10²⁰ cm^-2
N_H (intrinsic)	2.13 (+0.30, -0.29) × 10²² cm^-2
z of absorber	2.9
Photon index	1.91 (+0.04, -0.04)
Flux (0.3-10 keV) (Observed)	1.76 (+0.05, -0.05) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	2.19 (+0.05, -0.05) × 10^-10 erg cm^-2 s^-1
Counts to flux (obs)	3.47 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.33 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	704.81 (681)
Spectrum exposure	1.9 ks

PC mode. Mean photon arrival: T0+9720 s

N_H (Galactic)	5.45 × 10²⁰ cm^-2
N_H (intrinsic)	1.60 (+1.07, -0.94) × 10²² cm^-2
z of absorber	2.9
Photon index	1.74 (+0.13, -0.13)
Flux (0.3-10 keV) (Observed)	2.38 (+0.22, -0.20) × 10^-11 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	2.78 (+0.20, -0.19) × 10^-11 erg cm^-2 s^-1
Counts to flux (obs)	3.81 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.46 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	302.38 (336)
Spectrum exposure	2.4 ks

Late Time spectrum (T0 + 7425 to 20112 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+14053 s

N_H (Galactic)	5.45 × 10²⁰ cm^-2
N_H (intrinsic)	1.3 (+1.3, -1.1) × 10²² cm^-2
z of absorber	2.9
Photon index	1.70 (+0.16, -0.15)
Flux (0.3-10 keV) (Observed)	1.53 (+0.18, -0.16) × 10^-11 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.76 (+0.16, -0.15) × 10^-11 erg cm^-2 s^-1
Counts to flux (obs)	3.89 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.46 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	246.42 (287)
Spectrum exposure	2.1 ks