Solar type III bursts observed with LOFAR

2016/08/01 by Hamish Reid · 1 citation
Physics and Astronomy · #Solar and Space Plasma Dynamics #Stellar, planetary, and galactic studies #Astro and Planetary Science

paper · doi:10.1109/ursiap-rasc.2016.7601384

openalex publication_date 2016/08/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/29

Abstract

New solar type III burst observations are analysed at frequencies between 70-30 MHz. Combining imaging and spectra from LOFAR the apparent velocity of the type III exciter is estimated without the assumption of a density model. The observations suggest that the type IIIs are emitted by an electron beams travelling at relativistic velocities, much faster than predicted from typical coronal models. The type III centroids indicate the electron beams travels along an over-dense solar coronal density structure originating from a solar active region. Assumptions that are normally used to deduce exciter velocities are discussed.

Citations

• The Reuven Ramaty High-Energy Solar Spectroscopic Imager (RHESSI)
• WAVES: The radio and plasma wave investigation on the wind spacecraft
• The Atmospheric Imaging Assembly (AIA) on the Solar Dynamics Observatory (SDO)

Cited by

• Solar radio emission [wikipedia]

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