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We detect 5 galaxies in the CHANG-ES (Continuum Halos in Nearby Galaxies --an EVLA Survey) sample that show circular polarization (CP) at L-band in ourhigh resolution data sets. Two of the galaxies (NGC~4388 and NGC~4845) showstrong Stokes $V/I\,\equiv\,m_C\,\sim\,2$\%, two (NGC~660 and NGC~3628) havevalues of $m_C\sim \,0.3$\%, and NGC~3079 is a marginal detection at $m_C\sim\,0.2$\%. The two strongest $m_C$ galaxies also have the most luminous X-raycores and the strongest internal absorption in X-rays. We have expanded on ourprevious Faraday conversion interpretation and analysis and provide analyticalexpressions for the expected $V$ signal for a general case in which the cosmicray electron energy spectral index can take on any value. We provide examplesas to how such expressions could be used to estimate magnetic field strengthsand the lower energy cutoff for CR electrons. Four out of our detections are{\it resolved}, showing unique structures, including a {\it jet} in NGC~4388and a CP `conversion disk' in NGC~4845. The conversion disk is inclined to thegalactic disk but is perpendicular to a possible outflow direction. Such CPstructures have never before been seen in any galaxy to our knowledge. None ofthe galaxy cores show linear polarization at L-band. Thus CP may provide aunique probe of physical conditions deep into radio AGNs.

CHANG-ES XI: Circular Polarization in the Cores of Nearby Galaxies