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Swift-XRT spectra of GRB 070529

Last updated after receiving ObsID 00280706007, version 15.

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The spectral fits assume a redshift: 2.5 (GCN 6470)

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Time-averaged spectrum (T0 + 137 to 126672 s)

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WT and PC mode spectra of GRB 070529

WT mode. Mean photon arrival: T0+142 s

N_H (Galactic)	1.8 × 10²¹ cm^-2
N_H (intrinsic)	7 (+7, -4) × 10²² cm^-2
z of absorber	2.5
Photon index	2.9 (+0.9, -0.7)
Flux (0.3-10 keV) (Observed)	2.2 (+0.7, -0.6) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	9 (1.00 × 10¹⁰, -4) × 10^-10 erg cm^-2 s^-1
Counts to flux (obs)	2.6 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	1.0 × 10^-10 erg cm^-2 ct^-1
C-stat (dof)	49.35 (73)
Exposure time	11 s

PC mode. Mean photon arrival: T0+7369 s

N_H (Galactic)	1.8 × 10²¹ cm^-2
N_H (intrinsic)	3.7 (+1.9, -1.5) × 10²² cm^-2
z of absorber	2.5
Photon index	1.98 (+0.18, -0.17)
Flux (0.3-10 keV) (Observed)	2.35 (+0.24, -0.22) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	3.8 (+0.8, -0.4) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	5 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	7 × 10^-11 erg cm^-2 ct^-1
C-stat (dof)	288.77 (339)
Exposure time	21.7 ks

Late Time spectrum (T0 + 4438 to 126672 s)

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PC mode spectrum of GRB 070529

PC mode. Mean photon arrival: T0+14015 s

N_H (Galactic)	1.8 × 10²¹ cm^-2
N_H (intrinsic)	4.1 (+2.9, -2.1) × 10²² cm^-2
z of absorber	2.5
Photon index	2.06 (+0.26, -0.24)
Flux (0.3-10 keV) (Observed)	8.0 (+1.2, -1.0) × 10^-13 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.36 (+0.40, -0.21) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	4 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	7 × 10^-11 erg cm^-2 ct^-1
C-stat (dof)	160.99 (223)
Exposure time	20.6 ks