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Swift-XRT spectra of GRB 120728A

Last updated after receiving ObsID 00529021991, version 0.

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Time-averaged spectrum (T0 + 151 to 24861 s)

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PC mode spectrum of GRB 120728A

PC mode. Mean photon arrival: T0+5357 s

N_H (Galactic)	5.2 × 10²¹ cm^-2
N_H (intrinsic)	0 (+2.3 × 10²⁰, -0) cm^-2
z of absorber	0
Photon index	2.64 (+0.17, -0.13)
Flux (0.3-10 keV) (Observed)	2.35 (+0.26, -0.18) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	7.19 (+1.14, -0.70) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.4 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	1.0 × 10^-10 erg cm^-2 ct^-1
C-stat (dof)	259.87 (246)
Exposure time	10.4 ks

Late Time spectrum (T0 + 5124 to 24861 s)

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PC mode spectrum of GRB 120728A

PC mode. Mean photon arrival: T0+12575 s

N_H (Galactic)	5.2 × 10²¹ cm^-2
N_H (intrinsic)	0 (+7.7 × 10²⁰, -0) cm^-2
z of absorber	0
Photon index	2.32 (+0.26, -0.21)
Flux (0.3-10 keV) (Observed)	8.7 (+1.7, -1.2) × 10^-13 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.96 (+0.15, -0.71) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.9 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	8.9 × 10^-11 erg cm^-2 ct^-1
C-stat (dof)	125.73 (137)
Exposure time	9.4 ks