The 2010 August 01 type II burst: A CME-CME Interaction, and its radio and white-light manifestations

TL;DR

This paper investigates a type II radio burst linked to CME-CME interaction using multi-spacecraft radio and white-light observations, revealing a causal relationship between the burst and CME interaction.

Contribution

It demonstrates the effectiveness of radio direction-finding combined with white-light data to analyze CME interactions and their radio signatures.

Findings

Radio direction-finding results are consistent across methods.

Type II burst emission is causally related to CME interaction.

Multi-spacecraft observations confirm the CME-CME interaction impact.

Abstract

We present observational results of a type II burst associated with a CME-CME interaction observed in the radio and white-light wavelength range. We applied radio direction-finding techniques to observations from the STEREO and Wind spacecraft, the results of which were interpreted using white-light coronagraphic measurements for context. The results of the multiple radio-direction finding techniques applied were found to be consistent both with each other and with those derived from the white-light observations of coronal mass ejections (CMEs). The results suggest that the Type II burst radio emission is causally related to the CMEs interaction.