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Table 7

Spectral index measurements in the different regions of the Double Irony shown in Fig. 6.

Region
   
Δαsys 0.1 0.17
C − 0.20 ± 0.23 − 0.45 ± 0.15
Elbow + 0.14 ± 0.38 − 0.30 ± 0.24
N − 0.40 ± 0.12 − 0.69 ± 0.08
SW1 − 0.54 ± 0.09 − 0.63 ± 0.06
SW2 − 0.31 ± 0.16 − 0.57 ± 0.11
T − 0.53 ± 0.13 − 0.54 ± 0.08

Notes. At 1.4 GHz the NVSS flux density measurements were used. The first line lists the systematic uncertainties on the spectral indices assuming a 10% systematic uncertainty on the flux densities. The other uncertainties in the table refer to the statistical uncertainties.

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