Diffuse Interplanetary Radio Emission from a Polar Coronal Mass Ejection
N. Gopalswamy, P. Makela, S. Yashiro, S. Akiyama
TL;DR
This paper reports the first detection of diffuse interplanetary radio emission (DIRE) associated with a polar coronal mass ejection, originating from shock interactions with streamers at decameter-hectometric wavelengths.
Contribution
It presents the first observation of DIRE linked to a polar CME, expanding understanding of radio emissions during such solar events.
Findings
Detection of nonthermal radio emission from a polar CME
Identification of shock-flank interactions with streamers as the emission source
Observation at decameter-hectometric wavelengths
Abstract
We report on the first detection of nonthermal radio emission associated with a polar coronal mass ejection. We call the radio emission as diffuse interplanetary radio emission (DIRE), which occurs in the decameter-hectometric wavelengths. The radio emission originates from the shock flanks that interact with nearby streamers.
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Taxonomy
TopicsSolar and Space Plasma Dynamics · Stellar, planetary, and galactic studies · Astro and Planetary Science