Prospects for radio detection of stellar plasma beams

H. K. Vedantham*

*Corresponding author for this work

Research output: Contribution to journalComment/Letter to the editorAcademicpeer-review

2 Citations (Scopus)
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Violent solar eruptions are often accompanied by relativistic beams of charged particles. In the solar context they are referred to as solar particle events and are known to generate a characteristic swept-frequency radio burst. Due to their ionising potential, these beams influence atmospheric chemistry and habitability. Radio observations provide a crucial discriminant between stellar flares that do and do not generate particle beams. Here I use solar empirical data and semi-quantitative theoretical estimates to gauge the feasibility of detecting the associated radio bursts. My principal conclusion is that a dedicated search for swept frequency radio bursts on second timescales in existing low-frequency (ν ? 102 MHz) datasets, while technically challenging, will likely provide the evidence high-energy particles beams in Sun-like stars.

Original languageEnglish
Article number7
Number of pages5
JournalAstronomy & astrophysics
Publication statusPublished - 13-Jul-2020


  • stars: coronae
  • radiation mechanisms: non-thermal
  • radio continuum: stars
  • plasmas

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