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Swift-XRT spectra of GRB 060427

Last updated after receiving ObsID 00207281001, version 15.

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Time-averaged spectrum (T0 + 138 to 29095 s)

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WT and PC mode spectra of GRB 060427

WT mode. Mean photon arrival: T0+168 s

N_H (Galactic)	3.9 × 10²⁰ cm^-2
N_H (intrinsic)	1.34 (+0.33, -0.30) × 10²¹ cm^-2
z of absorber	0
Photon index	2.84 (+0.19, -0.18)
Flux (0.3-10 keV) (Observed)	4.09 (+0.28, -0.26) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	9.3 (+1.6, -3.3) × 10^-10 erg cm^-2 s^-1
Counts to flux (obs)	2.4 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	5.5 × 10^-11 erg cm^-2 ct^-1
C-stat (dof)	298.38 (310)
Exposure time	88 s

PC mode. Mean photon arrival: T0+3307 s

N_H (Galactic)	3.9 × 10²⁰ cm^-2
N_H (intrinsic)	1.22 (+0.53, -0.49) × 10²¹ cm^-2
z of absorber	0
Photon index	2.34 (+0.24, -0.22)
Flux (0.3-10 keV) (Observed)	3.08 (+0.34, -0.30) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	5.05 (+0.54, -0.67) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.4 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	5.6 × 10^-11 erg cm^-2 ct^-1
C-stat (dof)	221.64 (249)
Exposure time	10.3 ks

Late Time spectrum (T0 + 4591 to 29095 s)

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PC mode spectrum of GRB 060427

PC mode. Mean photon arrival: T0+10891 s

N_H (Galactic)	3.9 × 10²⁰ cm^-2
N_H (intrinsic)	8.5 (+10.7, -8.5) × 10²⁰ cm^-2
z of absorber	0
Photon index	2.10 (+0.45, -0.41)
Flux (0.3-10 keV) (Observed)	6.7 (+1.6, -1.3) × 10^-13 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	9.2 (+2.3, -1.7) × 10^-13 erg cm^-2 s^-1
Counts to flux (obs)	3.5 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.9 × 10^-11 erg cm^-2 ct^-1
C-stat (dof)	84.15 (113)
Exposure time	9.4 ks