Monday

Using the unparalleled sensitivity and high angular resolution of the LOFAR Two-Metre Sky Survey (LoTSS), we are now able, for the first time, to conduct a systematic study of low-luminosity radio AGN within the local universe. The recent first data release from the LoTSS project contains ~300,000 sources in an area of sky covering 424 square degrees which represents 2% of the final survey area. The LoTSS survey is more than an order of magnitude more sensitive than FIRST whilst being sensitive to emission at the same resolution on both small and extended scales. Dubbed Galaxy Scale Jets (GSJ), I will present my discovery from amongst the LoTSS DR1 dataset of a substantial population of physically small, low luminosity radio-loud AGN. Small, low-luminosity sources such as these are important because they are far more numerous than the large, powerful radio sources typically studied and their cumulative effects upon cosmic evolution is much less well-understood. The few existing studies of sources similar in size to GSJ have revealed X-ray detected shocks, providing some of the only known evidence for the direct effects of feedback on galaxy scales (as opposed to cluster scales in the larger sources). I will describe the methods used to find these objects along with their typical radio and host properties. I will also present the first study of the energetic impact of feedback from this previously unknown galaxy-scale jet population and their implications for galaxy evolution.