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Swift-XRT spectra of GRB 070318

Last updated after receiving ObsID 00271019010, version 16

Data were analysed using HEASOFT version 6.35.2

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The spectral fits assume a redshift: 0.84 (GCN 6216)

Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 69 to 133225 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+271 s

N_H (Galactic)	1.50 × 10²⁰ cm^-2
N_H (intrinsic)	6.1 (+0.8, -0.8) × 10²¹ cm^-2
z of absorber	0.84
Photon index	1.61 (+0.05, -0.05)
Flux (0.3-10 keV) (Observed)	6.67 (+0.25, -0.24) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	7.83 (+0.23, -0.23) × 10^-10 erg cm^-2 s^-1
Counts to flux (obs)	4.17 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.90 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	632.38 (659)
Spectrum exposure	369 s

PC mode. Mean photon arrival: T0+25587 s

N_H (Galactic)	1.50 × 10²⁰ cm^-2
N_H (intrinsic)	9.0 (+1.6, -1.4) × 10²¹ cm^-2
z of absorber	0.84
Photon index	1.86 (+0.10, -0.09)
Flux (0.3-10 keV) (Observed)	2.73 (+0.17, -0.16) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	3.60 (+0.18, -0.17) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.82 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	5.05 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	423.26 (479)
Spectrum exposure	41.8 ks

Late Time spectrum (T0 + 5537 to 133225 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+37931 s

N_H (Galactic)	1.50 × 10²⁰ cm^-2
N_H (intrinsic)	9.6 (+2.0, -1.8) × 10²¹ cm^-2
z of absorber	0.84
Photon index	2.01 (+0.12, -0.12)
Flux (0.3-10 keV) (Observed)	1.30 (+0.10, -0.09) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.85 (+0.13, -0.12) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.53 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	5.04 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	342.39 (389)
Spectrum exposure	40.4 ks