publication . Article . Preprint . 2008

Shock-related radio emission during coronal mass ejection lift-off? (Research Note)

Pohjolainen, S.;
Open Access
  • Published: 19 Mar 2008 Journal: Astronomy & Astrophysics, volume 483, pages 297-300 (issn: 0004-6361, eissn: 1432-0746, Copyright policy)
  • Publisher: EDP Sciences
Abstract
Aims: We identify the source of fast-drifting decimetric-metric radio emission that is sometimes observed prior to the so-called flare continuum emission. Fast-drift structures and continuum bursts are also observed in association with coronal mass ejections (CMEs), not only flares. Methods: We analyse radio spectral features and images acquired at radio, H-alpha, EUV, and soft X-ray wavelengths, during an event close to the solar limb on 2 June 2003. Results: The fast-drifting decimetric-metric radio burst corresponds to a moving, wide emission front in the radio images, which is normally interpreted as a signature of a propagating shock wave. A decimetric-metr...
Subjects
arXiv: Astrophysics::High Energy Astrophysical PhenomenaPhysics::Space PhysicsAstrophysics::Solar and Stellar Astrophysics
free text keywords: Space and Planetary Science, Astronomy and Astrophysics, Wavelength, Shock wave, Astrophysics, Wave propagation, Physics, Astronomy, Bow shock (aerodynamics), Solar flare, Flare, law.invention, law, Blast wave, Coronal mass ejection
Related Organizations
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