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Swift-XRT spectra of GRB 090516

Last updated after receiving ObsID 00352190009, version 17

Data were analysed using HEASOFT version 6.32

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Add time-sliced spectrum.

The spectral fits assume a redshift: 4.109 (GCN 9383)

Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 170 to 127519 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+259 s

N_H (Galactic)	5.26 × 10²⁰ cm^-2
N_H (intrinsic)	3.8 (+0.4, -0.4) × 10²² cm^-2
z of absorber	4.109
Photon index	1.852 (+0.029, -0.029)
Flux (0.3-10 keV) (Observed)	3.35 (+0.06, -0.06) × 10^-9 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	4.06 (+0.06, -0.06) × 10^-9 erg cm^-2 s^-1
Counts to flux (obs)	3.59 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.36 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	692.87 (734)
Spectrum exposure	319 s

PC mode. Mean photon arrival: T0+21335 s

N_H (Galactic)	5.26 × 10²⁰ cm^-2
N_H (intrinsic)	2.2 (+0.8, -0.8) × 10²² cm^-2
z of absorber	4.109
Photon index	1.99 (+0.07, -0.07)
Flux (0.3-10 keV) (Observed)	2.38 (+0.11, -0.11) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	2.89 (+0.11, -0.11) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.31 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.03 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	405.19 (485)
Spectrum exposure	54.7 ks

Late Time spectrum (T0 + 4002 to 127519 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+22439 s

N_H (Galactic)	5.26 × 10²⁰ cm^-2
N_H (intrinsic)	2.7 (+0.9, -0.9) × 10²² cm^-2
z of absorber	4.109
Photon index	2.03 (+0.08, -0.07)
Flux (0.3-10 keV) (Observed)	2.154 (+0.104, -0.098) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	2.68 (+0.11, -0.10) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.26 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.06 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	390.89 (476)
Spectrum exposure	54.4 ks