AWSoM Simulation of the September 10, 2014 CME: Shock Capturing and Radio Emission

We simulate the September 10, 2014 CME/ICME event and its propagation to Earth using the Alfvén Wave Solar atmosphere Model (AWSoM) within the Space Weather Modeling Framework. This fast CME reached the Earth with an average transit speed of 920 km/s and produced a wide range of disturbances in the corona and heliosphere. We conduct detailed comparisons of this CME simulation with observations including SDO/AIA, LASCO C2/C3, and in situ data from ACE and Wind. We illustrate recently developed tools designed to numerically extract simulated CME-driven shock surfaces and provide critical shock parameters (plasma frequency, theta BN and compression ratio). From these shock surfaces, we create realistic synthetic type II radio spectra, which are then compared to observations. We explore different plasma thresholds (e.g. de Hoffman-Teller velocity and angle between shock normal and the upstream magnetic field) applied to the shock surface as a way of discriminating emission that best matches the observed type-II radio emission.