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Swift-XRT spectra of GRB 120728A

Last updated after receiving ObsID 00529021000, version 13

Data were analysed using HEASOFT version 6.32

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Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 151 to 24874 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+155 s

N_H (Galactic)	6.62 × 10²¹ cm^-2
N_H (intrinsic)	0 (+1.39 × 10²², -0) cm^-2
z of absorber	0
Photon index	1.9 (+3.5, -0.7)
Flux (0.3-10 keV) (Observed)	10 (+9, -6) × 10^-11 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.1 (+0.8, -0.5) × 10^-10 erg cm^-2 s^-1
Counts to flux (obs)	3.37 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	3.75 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	10.67 (13)
Spectrum exposure	8 s

PC mode. Mean photon arrival: T0+5079 s

N_H (Galactic)	6.62 × 10²¹ cm^-2
N_H (intrinsic)	0 (+3.74 × 10²⁰, -0) cm^-2
z of absorber	0
Photon index	2.39 (+0.15, -0.11)
Flux (0.3-10 keV) (Observed)	2.93 (+0.33, -0.13) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	6.72 (-0.40, -1.56) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.53 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	8.11 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	238.54 (259)
Spectrum exposure	10.5 ks

Late Time spectrum (T0 + 5124 to 24874 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+12564 s

N_H (Galactic)	6.62 × 10²¹ cm^-2
N_H (intrinsic)	0 (+1.91 × 10²¹, -0) cm^-2
z of absorber	0
Photon index	2.01 (+0.35, -0.17)
Flux (0.3-10 keV) (Observed)	1.04 (+0.16, -0.19) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.76 (+0.44, -0.22) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	4.26 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	7.18 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	104.22 (138)
Spectrum exposure	9.5 ks