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Swift-XRT spectra of GRB 110503A

Last updated after receiving ObsID 00452685012, version 16

Data were analysed using HEASOFT version 6.32

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Add time-sliced spectrum.

The spectral fits assume a redshift: 1.613 (GCN 11993)

Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 166 to 94405 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+418 s

N_H (Galactic)	2.84 × 10²⁰ cm^-2
N_H (intrinsic)	2.0 (+0.8, -0.8) × 10²¹ cm^-2
z of absorber	1.613
Photon index	1.71 (+0.04, -0.04)
Flux (0.3-10 keV) (Observed)	4.82 (+0.14, -0.13) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	5.23 (+0.12, -0.12) × 10^-10 erg cm^-2 s^-1
Counts to flux (obs)	3.73 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.05 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	613.13 (669)
Spectrum exposure	680 s

PC mode. Mean photon arrival: T0+22246 s

N_H (Galactic)	2.84 × 10²⁰ cm^-2
N_H (intrinsic)	2.5 (+1.2, -1.1) × 10²¹ cm^-2
z of absorber	1.613
Photon index	1.83 (+0.06, -0.06)
Flux (0.3-10 keV) (Observed)	6.55 (+0.27, -0.26) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	7.28 (+0.24, -0.24) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.54 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	3.94 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	476.72 (562)
Spectrum exposure	34.0 ks

Late Time spectrum (T0 + 6208 to 94405 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+31232 s

N_H (Galactic)	2.84 × 10²⁰ cm^-2
N_H (intrinsic)	2.3 (+1.4, -1.3) × 10²¹ cm^-2
z of absorber	1.613
Photon index	1.86 (+0.07, -0.07)
Flux (0.3-10 keV) (Observed)	3.75 (+0.19, -0.18) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	4.18 (+0.17, -0.16) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.47 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	3.87 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	383.06 (491)
Spectrum exposure	32.9 ks