Radio emission from stellar active regions

Details Radio emission from stellar active regions Radio emission from stellar active regions

May 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994r%26qe...37..403f&link_type=abstract

Radiophysics and Quantum Electronics, Volume 37, Issue 5, pp.403-409

Physics

1

Scientific paper

Several types of stars present a variable radio emission. In this paper we present a time-dependent model aimed to reproduce the RS CVn emission, which however can be easily extended to other types of stars. The time evolution of a population of electrons following an initial power-law distribution is studied. It is shown that the spectrum of the emitted radiation evolves, in a time scale of a few days, from the typical spectrum of the flaring emission to the flat one observed in quiescent periods. It is also shown that the intensity distribution reproduces the core-halo structure observed using VLBI for a period of about one day after the flare.

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