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Swift-XRT spectra of GRB 050318

Last updated after receiving ObsID 00111529004, version 37.

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The spectral fits assume a redshift: 1.44 (GCN 3122)

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Time-averaged spectrum (T0 + 3282 to 63659 s)

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WT and PC mode spectra of GRB 050318

WT mode. Mean photon arrival: T0+3304 s

N_H (Galactic)	1.9 × 10²⁰ cm^-2
N_H (intrinsic)	2.6 (+16.1, -2.6) × 10²¹ cm^-2
z of absorber	1.44
Photon index	2.55 (+0.91, -0.94)
Flux (0.3-10 keV) (Observed)	4.1 (+3.1, -2.0) × 10^-11 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	5.7 (+10.4, -2.7) × 10^-11 erg cm^-2 s^-1
Counts to flux (obs)	2.2 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	3.0 × 10^-11 erg cm^-2 ct^-1
C-stat (dof)	15.75 (21)
Exposure time	16 s

PC mode. Mean photon arrival: T0+15352 s

N_H (Galactic)	1.9 × 10²⁰ cm^-2
N_H (intrinsic)	8.4 (+8.5, -8.0) × 10²⁰ cm^-2
z of absorber	1.44
Photon index	1.981 (+0.088, -0.086)
Flux (0.3-10 keV) (Observed)	3.29 (+0.19, -0.17) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	3.64 (+0.21, -0.16) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.6 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.0 × 10^-11 erg cm^-2 ct^-1
C-stat (dof)	383.32 (413)
Exposure time	23.5 ks

Late Time spectrum (T0 + 4917 to 63659 s)

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PC mode spectrum of GRB 050318

PC mode. Mean photon arrival: T0+17328 s

N_H (Galactic)	1.9 × 10²⁰ cm^-2
N_H (intrinsic)	7.7 (+9.1, -7.7) × 10²⁰ cm^-2
z of absorber	1.44
Photon index	1.968 (+0.096, -0.092)
Flux (0.3-10 keV) (Observed)	2.84 (+0.17, -0.16) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	3.12 (+0.18, -0.15) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.6 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.0 × 10^-11 erg cm^-2 ct^-1
C-stat (dof)	364.89 (395)
Exposure time	23.1 ks