A Complex Solar Radio Event Associated with Interacting Coronal Mass Ejections on 17 January 2005

K. Bouratzis, A. Hilaris$^1$, P. Preka-Papadema$^1$, X. Moussas$^1$, C. Caroubalos$^2$, C.E. Alissandrakis$^3$, P. Tsitsipis$^4$, A. Kontogeorgos$^4$, J-L. Bougeret$^5$, C. Dumas$^5$

$^1$Section of Astrophysics, Astronomy & Mechanics, Department of Physics, University of Athens, GR-15783 Athens, Greece
$^2$Department of Informatics & Telecommunications, GR-15783 Athens, Greece
$^3$Section of Astro-geophysics,Physics Department, University of Ioannina, GR-45110 Ioannina, Greece
$^4$Department of Electronics, Technological Educational Institute of Lamia, Lamia GR-35100, Greece
$^5$LESIA, Observatoire de Paris-Meudon, 5 Place J. Janssen, F-92195 Meudon Cedex, France

A complex radio event was observed on January 17, 2005 with the radio-spectrograph ARTEMIS-IV, operating at Thermopylae, Greece; it was associated with an X3.8 SXR flare and two fast Halo CMEs in close succession. We present dynamic spectra of this event combined with data from WIND WAVES; these observations provide a complete view of the radio emission induced by shock waves and electron beams from the low corona to about 1 A.U. We also use data from the NANCAY RADIOHELIOGRAPH, GOES, EIT and LASCO for the associated flare and CME activity.