Tuesday

In the last decade, it has become clear that most radio-quiet AGNs (RQ-AGNs) are not radio silent. As a consequence, a lot of effort have been devoted to understanding the physical origin of their radio emission. While many studies have shown that RQ-AGNs are indeed similar to the more powerful AGNs, the origin of their nuclear radio emission is still an unsolved problem. Their emission have been attributed to a number of processes but mainly, either advection-dominated accretion flow, a compact radio jet or combination of both. Solving this mystery requires comparing the emission predicted by different models with the observed SED of the compact nuclear core from radio to X-rays. Multi-wavelength radio data of the compact nuclear core is important to constrain the relative importance of the synchrotron emission from the jet and accretion processes. This study therefore requires sufficient linear resolution and sensitivity to both detect and separate any weak accretion related emission from that of the bright host galaxy. The upgrade to the VLA (the JVLA) has both sub-arcsecond resolution and micro Jy level sensitivity that enable us to detect radio emission from nearby RQ-AGNs. I will present the results of a study of the 10 faintest radio-quiet AGNs in the radio with the JVLA at 1 to 18 GHz. This study also uses X-ray data from the literature to provide deeper understanding of the emission mechanisms of AGNs at the faintest levels.