45 citations · 197 across the 18 of their papers we have counts for
18 papers
High resolution observations with Artemis--JLS, (II) Type IV associated intermediate drift bursts
C. Bouratzis, A. Hillaris, C. E. Alissandrakis +5
Aims. We examined the characteristics of isolated intermediate drift bursts (IMDs) and their morphologies on dynamic spectra, in particular the positioning of emission and absorpti…
High resolution observations with Artemis-IV and the NRH. I. Type IV associated narrow-band bursts
C. Bouratzis, A. Hillaris, C. E. Alissandrakis +5
Narrow band bursts appear on dynamic spectra from microwave to decametric frequencies as fine structures with very small duration and bandwidth. They are thought to mark small scal…
Fine Structure of Metric Type-IV Radio Bursts Observed with the ARTEMIS-IV Radio Spectrograph: Association with Flares and Coronal Mass Ejections
C. Bouratzis, A. Hillaris, C. E. Alissandrakis +5
Fine structures embedded in type-IV burst continua may be used as diagnostics of the magnetic field restructuring and the corresponding energy release associated with the low coron…
CME Expansion as the Driver of Metric Type II Shock Emission as Revealed by Self-Consistent Analysis of High Cadence EUV Images and Radio Spectrograms
A. Kouloumvakos, S. Patsourakos, A. Hillaris +6
On 13 June 2010, an eruptive event occurred near the solar limb. It included a small filament eruption and the onset of a relatively narrow coronal mass ejection (CME) surrounded b…
Type II and IV radio bursts in the active period October-November 2003
V. Petoussis, P. Tsitsipis, A. Kontogeorgos +7
In this report we present the Type II and IV radio bursts observed and analyzed by the radio spectrograph ARTEMIS IV1, in the 650-20MHz frequency range, during the active period Oc…
Radio Bursts in the Active Period January 2005
K. Bouratzis, P. Preka-Papadema, A. Hillaris +5
We present complex radio bursts recorded by the radiospectrograph ARTEMIS-IV in the active period of January 2005. The wide spectral coverage of this recorder, in the 650-20 MHz ra…
Type II Shocks Characteristics: Comparison with associated CMEs and Flares
G. Pothitakis, E. Mitsakou, P. Preka-Papadema +8
A number of metric (100-650 MHz) typeII bursts was recorded by the ARTEMIS-IV radiospectrograph in the 1998-2000 period; the sample includes both CME driven shocks and shocks origi…
Ten Years of the Solar Radiospectrograph ARTEMIS-IV
C. Caroubalos, C. E. Alissandrakis, A. Hillaris +10
The Solar Radiospectrograph of the University of Athens (ARTEMIS-IV) is in operation at the Thermopylae Satellite Communication Station since 1996. The observations extend from the…
ARTEMIS IV Radio Observations of the 14 July 2000 Large Solar Event
C. Caroubalos, C. E. Alissandrakis, A. Hillaris +13
In this report we present a complex metric burst, associated with the 14 July 2000 major solar event, recorded by the ARTEMIS-IV radio spectrograph at Thermopylae. Additional space…
Space Storm Measurements of 17 and 21 April 2002 Forbush Effects from Artemis-IV Solar Radio-Spectrograph, Athens Neutron Monitor Station and Coronas-F Satellite
C. Caroubalos, X. Moussas, P. Preka-Papadema +11
In this report we present two complex eruptive solar events and the associated Cosmic Ray effects (Forbush decrease). We use combined recordings from a number of Earthbound Receive…
Type II Radio Emission and Solar Particle Observations
S. N. Kuznetsov, V. G. Kurt, B. Yushkov +9
The 28 October 2003 flare gave us the unique opportunity to compare the acceleration time of high-energy protons with the escaping time of those particles which have been measured…
Solar flares with and without SOHO/LASCO coronal mass ejections and type II shocks
A. Hillaris, V. Petousis, E. Mitsakou +10
We analyse of a set of radio rich (accompanied by type IV or II bursts) solar flares and their association with SOHO/LASCO Coronal Mass Ejections in the period 1998 2000. The inten…
The improved ARTEMIS IV multichannel solar radio spectrograph of the University of Athens
A. Kontogeorgos, P. Tsitsipis, C. Caroubalos +8
We present the improved solar radio spectrograph of the University of Athens operating at the Thermopylae Satellite Telecommunication Station. Observations now cover the frequency…
Type III events, flares and CMEs, in the extremely active period October-November 2003
E. Mitsakou, M. Thanasa, P. Preka-Papadema +8
The type III observations trace the propagation of energetic electron populations through the Solar Corona which, more often than not, precede or are associated with energy release…
Space storm measurements of the July 2005 solar extreme events from the low corona to the Earth
C. Caroubalos, P. Preka-Papadema, H. Mavromichalaki +4
The Athens Neutron Monitor Data Processing (ANMODAP) Center recorded an unusual Forbush decrease with a sharp enhancement of cosmic ray intensity right after the main phase of the…
Coronal shocks associated with CMEs and flares and their space weather consequences
Marina Laskari, Panagiota Preka-Papadema, Constantine Caroubalos +4
We study the geoeffectiveness of a sample of complex events; each includes a coronal type II burst, accompanied by a GOES SXR flare and LASCO CME. The radio bursts were recorded by…
Relation between coronal type II bursts, associated flares and CMEs
George Pothitakis, Panagiota Preka-Papadema, Xenophon Moussas +5
We study a sample of complex events; each includes a coronal type II burst, accompanied by a GOES SXR flare and LASCO CME. The radio bursts were recorded by the ARTEMIS-IV radio sp…
CME on CME Interaction on January 17, 2005
C. Bouratzis, P. Preka-Papadima, X. Moussas +5
On January 17, 2005 a complex radio event associated with an X3.8 SXR flare and two fast Halo CMEs (CME1 & CME2 henceforward) in close succession was observed. We present combined…