Zobrazeno 1 - 10
of 286
pro vyhledávání: '"P Preka-Papadema"'
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:
Atmosphere, Vol 15, Iss 3, p 293 (2024)
Solar activity encompasses various phenomena within the solar atmosphere, notably including eruptive events like solar flares and coronal mass ejections (CMEs) [...]
Externí odkaz:
https://doaj.org/article/e31dd25f27ff40c48e5be18dce6053bb
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
Akademický článek
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Publikováno v:
Advances in Space Research, Volume 57, Issue 10, p. 2234-2244, 2016
Transient and recurrent solar activity drive geomagnetic disturbances; these are quantified (amongst others) by DST, AE indices time-series. Transient disturbances are related to the Interplanetary Coronal Mass Ejections (ICMEs) while recurrent distu
Externí odkaz:
http://arxiv.org/abs/1605.04005
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:
Kouloumvakos, A., Patsourakos, S., Hillaris, A., Vourlidas, A., Preka-Papadema, P., Moussas, X., Caroubalos, C., Tsitsipis, P., Kontogeorgos, A.
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 by an extreme ultraviolet wave front recorded by the Solar Dynamics Obs
Externí odkaz:
http://arxiv.org/abs/1311.5159