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Swift-XRT spectra of GRB 060418

Last updated after receiving ObsID 00205851013, version 16

Data were analysed using HEASOFT version 6.35.2

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Add time-sliced spectrum.

The spectral fits assume a redshift: 1.49 (GCN 4969)

Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 83 to 40330 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+207 s

N_H (Galactic)	1.59 × 10²¹ cm^-2
N_H (intrinsic)	5.4 (+1.0, -0.9) × 10²¹ cm^-2
z of absorber	1.49
Photon index	2.14 (+0.04, -0.04)
Flux (0.3-10 keV) (Observed)	1.070 (+0.024, -0.023) × 10^-9 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.59 (+0.03, -0.03) × 10^-9 erg cm^-2 s^-1
Counts to flux (obs)	3.24 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.81 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	706.56 (707)
Spectrum exposure	532 s

PC mode. Mean photon arrival: T0+4027 s

N_H (Galactic)	1.59 × 10²¹ cm^-2
N_H (intrinsic)	2.4 (+4.2, -2.4) × 10²¹ cm^-2
z of absorber	1.49
Photon index	1.90 (+0.15, -0.14)
Flux (0.3-10 keV) (Observed)	1.91 (+0.19, -0.17) × 10^-11 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	2.49 (+0.20, -0.19) × 10^-11 erg cm^-2 s^-1
Counts to flux (obs)	3.66 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.76 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	224.96 (302)
Spectrum exposure	2.5 ks

Late Time spectrum (T0 + 4243 to 40330 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+7285 s

N_H (Galactic)	1.59 × 10²¹ cm^-2
N_H (intrinsic)	6 (+597, -6) × 10¹⁹ cm^-2
z of absorber	1.49
Photon index	1.83 (+0.22, -0.15)
Flux (0.3-10 keV) (Observed)	7.3 (+0.9, -0.9) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	9.03 (+1.04, -0.83) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.75 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.67 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	147.76 (202)
Spectrum exposure	2.2 ks