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Swift-XRT spectra of GRB 090618

Last updated after receiving ObsID 00355083031, version 14

Data were analysed using HEASOFT version 6.32

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The spectral fits assume a redshift: 0.54 (GCN 9518)

Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 124 to 59738 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+795 s

N_H (Galactic)	7.59 × 10²⁰ cm^-2
N_H (intrinsic)	2.13 (+0.14, -0.14) × 10²¹ cm^-2
z of absorber	0.54
Photon index	1.926 (+0.019, -0.019)
Flux (0.3-10 keV) (Observed)	8.70 (+0.11, -0.10) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.117 (+0.011, -0.011) × 10^-9 erg cm^-2 s^-1
Counts to flux (obs)	3.52 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.52 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	826.67 (847)
Spectrum exposure	2.3 ks

PC mode. Mean photon arrival: T0+24186 s

N_H (Galactic)	7.59 × 10²⁰ cm^-2
N_H (intrinsic)	2.4 (+0.4, -0.4) × 10²¹ cm^-2
z of absorber	0.54
Photon index	1.83 (+0.04, -0.04)
Flux (0.3-10 keV) (Observed)	2.50 (+0.07, -0.07) × 10^-11 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	3.14 (+0.07, -0.07) × 10^-11 erg cm^-2 s^-1
Counts to flux (obs)	3.81 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.77 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	638.30 (666)
Spectrum exposure	24.1 ks

Late Time spectrum (T0 + 5963 to 59738 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+24777 s

N_H (Galactic)	7.59 × 10²⁰ cm^-2
N_H (intrinsic)	2.5 (+0.4, -0.4) × 10²¹ cm^-2
z of absorber	0.54
Photon index	1.83 (+0.05, -0.05)
Flux (0.3-10 keV) (Observed)	2.44 (+0.07, -0.07) × 10^-11 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	3.07 (+0.07, -0.07) × 10^-11 erg cm^-2 s^-1
Counts to flux (obs)	3.81 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.79 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	615.54 (660)
Spectrum exposure	24.0 ks