High Cadence, Linear and Circular Polarization Monitoring of OJ 287 - Helical Magnetic Field in a Bent Jet
We present a multi-frequency, dense radio monitoring program of the blazar OJ 287 using the 100-m Effelsberg radio telescope. The program aims at testing different binary supermassive black hole (SMBH) scenarios and studying the physical conditions in the central region of this bright blazar. Here, we analyze the evolution in total flux density, linear and circular polarization as a means to study the OJ 287 jet structure and its magnetic field geometry
Astronomy & Astrophysics manuscript no. oj287_pol_v7.