Microwave Solar Observations of Eruptive Events in 2 December, 2003 and 25 January, 2007 with the RATAN-600 Radio Telescope: Detection Powerful Sources of the Thermal Emission in the Onset of the Decay Phase of X-ray Flares

I.Yu. Grigoryeva¹, L.K. Kashapova², M.A. Livshits³, V.N. Borovik¹

¹Pulkovo Astronomical Observatory, Russian Academy of Sciences
²Institute of Solar-Terrestrial Physics, Russian Academy of Sciences
³Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation

A fast West limb CME event in 2 December, 2003 consists of prominence eruption, associated with the flare (C7.2, GOES ) with the peak at 09:48 UT and subsequent arcade formation. Multiwavelength observations in the range of 1.8-5.0 cm were carried out at the RATAN-600 radio telescope during the period of 08:02-11:04 UT in four different azimuths with time intervals of about one hour. The spectral characteristics of the radio sources associated with the AR 10508 are discussed and we compare them with the images constructed from data RHESSI. The similar event occurred in 25 January, 2007 and we analize physical parameters of both phenomena together.