Routine Characterization of Coronal Mass Ejections Using Gyrosynchrotron Emission

Coronal magnetic fields are understood to be the drivers of space weather, though their measurements have remained challenging. Due to the nature of the emission mechanisms involved, the polarization properties of coronal radio emissions are sensitive to coronal magnetic fields. Here we summarize the recent progress in measuring and modeling the gyrosynchrotron emissions from coronal mass ejections (CMEs) at meter wavelengths and justify our expectations for this method to become a routine tool for estimating the magnetic fields trapped in CMEs and other physical parameters of CME plasma.