Zobrazeno 1 - 10
of 150
pro vyhledávání: '"Bouratzis, C."'
Publikováno v:
A&A 662, A14 (2022)
We report the first detection of metric radio emission from a surge, observed with the Nan\c{c}ay Radioheliograph (NRH), STEREO and other instruments. The emission was observed during the late phase of the M9 complex event SOL2010-02-012T11:25:00, de
Externí odkaz:
http://arxiv.org/abs/2203.01043
Autor:
Armatas, S., Bouratzis, C., Hillaris, A., Alissandrakis, C. E., Preka-Papadema, P., Kontogeorgos, A., Tsitsipis, P., Moussas, X.
Publikováno v:
A&A 659, A198 (2022)
Narrowband bursts (spikes) appear on dynamic spectra from microwave to decametric frequencies. They are believed to be manifestations of small-scale energy release through magnetic reconnection. We study the position of the spike-like structures rela
Externí odkaz:
http://arxiv.org/abs/2201.07832
Publikováno v:
A&A 627, A133 (2019)
Aims: We study the characteristics of intermediate drift bursts (fibers) embedded in the July 14, 2000 large solar event. Methods: We used dynamic spectra from the acousto-optic analyzer (SAO) of the ARTEMIS-JLS solar radiospectrograph, in conjunctio
Externí odkaz:
http://arxiv.org/abs/1906.03434
Autor:
Bouratzis, C., Hillaris, A., Alissandrakis, C. E., Preka-Papadema, P., Moussas, X., Caroubalos, C., Tsitsipis, P., Kontogeorgos, A.
Publikováno v:
A&A 625, A58 (2019)
Aims. We examined the characteristics of isolated intermediate drift bursts (IMDs) and their morphologies on dynamic spectra, in particular the positioning of emission and absorption ridges and the repetition rate of fiber groups. These were compared
Externí odkaz:
http://arxiv.org/abs/1904.02262
Autor:
Armatas, S., Bouratzis, C., Hillaris, A., Alissandrakis, C. E., Preka-Papadema, P., Moussas, X., Mitsakou, E., Tsitsipis, P., Kontogeorgos, A.
Publikováno v:
A&A 624, A76 (2019)
Aims. We examine high time resolution dynamic spectra for fine structures in type II solar radio bursts Methods. We used data obtained with the (SAO) receiver of the Artemis-JLS (ARTEMIS-IV) solar radio spectrograph in the 450-270 MHz range at 10 ms
Externí odkaz:
http://arxiv.org/abs/1902.10617
Autor:
Bouratzis, C., Hillaris, A., Alissandrakis, C. E., Preka-Papadema, P., Moussas, X., Caroubalos, C., Tsitsipis, P., Kontogeorgos, A.
Publikováno v:
A&A 586, A29 (2016)
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 scale magnetic reconnection. We analyzed 27 metric type-IV events with nar
Externí odkaz:
http://arxiv.org/abs/1512.02481
Autor:
Bouratzis, C., Hillaris, A., Alissandrakis, C. E., Preka-Papadema, P., Moussas, X., Caroubalos, C., Tsitsipis, P., Kontogeorgos, A.
Publikováno v:
Solar Physics, Volume 290, Issue 1, pp.219-286, 01/2015
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 corona development of flare/CME events. A catalog of 36 type-IV bursts obse
Externí odkaz:
http://arxiv.org/abs/1406.1202
The highest energies of solar energetic nucleons detected in space or through gamma-ray emission in the solar atmosphere are in the GeV range. Where and how the particles are accelerated is still controversial. We search for observational information
Externí odkaz:
http://arxiv.org/abs/1403.2260
Autor:
Hillaris, A., Malandraki, O., Klein, K. -L, Preka-Papadema, P., Moussas, X., Bouratzis, C., Mitsakou, E., Tsitsipis, P., Kontogeorgos, A.
On 17 January 2005 two fast coronal mass ejections were recorded in close succession during two distinct episodes of a 3B/X3.8 flare. Both were accompanied by metre-to-kilometre type-III groups tracing energetic electrons that escape into the interpl
Externí odkaz:
http://arxiv.org/abs/1101.5759
Autor:
Caroubalos, C., Alissandrakis, C. E., Hillaris, A., Preka-Papadema, P., Polygiannakis, J., Moussas, X., Tsitsipis, P., Kontogeorgos, A., Petoussis, V., Bouratzis, C., Bougeret, J. -L., Dumas, G., Nindos, A.
Publikováno v:
2006AIPC..848..864C
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 base of the Solar Corona (650 MHz) to about 2 Solar Radii (20 MHz) wi
Externí odkaz:
http://arxiv.org/abs/1009.4150