Metric observations of transient, quasi-periodic radio emission from the solar corona in association with a ``halo'' CME and an ``EIT wave'' event

Details Metric observations of transient, quasi-periodic radio emission from the solar corona in association with a ``halo'' CME and an ``EIT wave'' event Metric observations of transient, quasi-periodic radio emission from the solar corona in association with a ``halo'' CME and an ``EIT wave'' event

Mar 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003a%26a...400..753r&link_type=abstract

Astronomy and Astrophysics, v.400, p.753-758 (2003)

Astronomy and Astrophysics

Astrophysics

3

Sun: Activity, Sun: Corona, Sun: Oscillations, Plasmas, Magnetohydrodynamics (Mhd), Sun: Radio Radiation

Scientific paper

We present metric radio observations of quasi-periodic emission from the solar corona in close association with a ``halo'' CME and an ``EIT wave'' phenomenon. The radio event lasted for about 60 s. Its mean periodicity was ~8.8 s. The estimated Alfvén speed in the corona was 1034 km s-1. The derived height of the source region of the observed quasi-periodic emission, and the magnetic field at the corresponding location (for emission in the fundamental mode) were ~ 0.23 Rsun and 6.3 G, respectively. The magnetic field for harmonic emission was found to be ~ 3.1 G.

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