Astronomy and Astrophysics – Astrophysics
Scientific paper
May 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010a%26a...514a..28k&link_type=abstract
Astronomy and Astrophysics, Volume 514, id.A28
Astronomy and Astrophysics
Astrophysics
6
Sun: Flares, Sun: Radio Radiation
Scientific paper
Aims: Motivated by observations of the drifting pulsating structures (DPSs) in solar radio spectra, we study the electromagnetic (radio) emission generated during tearing and coalescence processes in a flare current sheet. Methods: For numerical simulations, we used a 2.5-D particle-in-cell electromagnetic relativistic code. Numerical data were analyzed by the wavelet methods. Results: It is found that the electromagnetic emission is generated during a coalescence of plasmoids, and it has a quasi-periodic character. Detailed analysis reveals that the electromagnetic emission is produced around the interacting plasmoids just before their coalescence into a larger one. The period in variations of electromagnetic emission corresponds to that of magnetic field at the same region. Reflections of the electromagnetic waves between interacting plasmoids are recognized. The computed and observed periodicities are discussed. The similarity of the DPSs with some radio bursts observed during star flares indicates a broader applicability for this model.
Barta Miroslav
Karlicky Marian
Rybák Ján
No associations
LandOfFree
Radio spectra generated during coalescence processes of plasmoids in a flare current sheet does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Radio spectra generated during coalescence processes of plasmoids in a flare current sheet, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Radio spectra generated during coalescence processes of plasmoids in a flare current sheet will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1889505