Follow-up LOFAR observations of the tau Boötis exoplanetary system

Abstract

o tis (tau Boo) exoplanetary system was tentatively detected using LOFAR (LOW-Frequency ARray) beamformed observations. If confirmed, this detection will be a major contribution to exoplanet science. However, follow-up observations are required to confirm this detection. Here, we present such follow-up observations of the tau Boo system using LOFAR. These observations cover 70$$ of the orbital period of tau Boo b including the orbital phases of the previous tentative detections. We used the BOREALIS pipeline to mitigate radio frequency interference and to search for bursty and slowly varying radio signals. BOREALIS was previously used to find the tentative radio signals from tau Boo. o tis exoplanetary system. o tis exoplanetary system.