We study the angular power spectra of the polarized component of the Galactic synchrotron emission in the 28–deg ^ { 2 } Test Region of the Southern Galactic Plane Survey at 1.4 GHz .
These data were obtained by the Australia Telescope Compact Array and allow us to investigate angular power spectra down to arcminute scales .
We find that , at this frequency , the polarization spectra for E – and B –modes seem to be affected by Faraday rotation produced in compact foreground screens .
A different behavior is shown by the angular spectrum of the polarized intensity PI = \sqrt { Q ^ { 2 } + U ^ { 2 } } .
This is well fitted by a power law ( C _ { PI \ell } \propto \ell ^ { - \alpha _ { PI } } ) with slope \sim 1.7 , which agrees with higher frequency results and can probably be more confidently extrapolated to the cosmological window .