“…Ryabov et al, 1999;Altyntsev et al, 2017;Shain, Melnikov, and Morgachev, 2017;Sharykin, Kuznetsov, and Myshyakov, 2018). At lower frequencies, QT regions are also invoked to explain the polarization properties of noise storms (Suzuki and Sheridan, 1980;White, Thejappa, and Kundu, 1992), Types U and N bursts (Suzuki and Sheridan, 1980;Kong et al, 2016), and zebra patterns in Type IV bursts (Kaneda et al, 2015). A natural place to start investigating the importance of QT regions in our observations would be by comparing the polarization sense of the active region noise storm sources from Section 4 to that expected from the magnetic field orientation assuming o-mode polarization from plasma emission.…”