Zobrazeno 1 - 10
of 300
pro vyhledávání: '"A. Hillaris"'
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 654, A112 (2021)
We have studied a complex metric radio event which originated in a compact flare, observed with the ARTEMIS-JLS radiospectro-graph on February 12, 2010. The event was associated with a surge observed at 195 and 304 {\AA} and with a coronal mass eject
Externí odkaz:
http://arxiv.org/abs/2108.02855
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:
Alissandrakis, Costas1 (AUTHOR) calissan@uoi.gr, Hillaris, Alexander2 (AUTHOR) ahilaris@phys.uoa.gr, Bouratzis, Costas2 (AUTHOR) sarmatas@phys.uoa.gr, Armatas, Spyros2 (AUTHOR)
Publikováno v:
Universe (2218-1997). Oct2023, Vol. 9 Issue 10, p442. 46p.
Publikováno v:
Universe, Vol 9, Iss 10, p 442 (2023)
Radio bursts provide important diagnostics of energetic phenomena of the Sun. In particular, bursts in decimetric and metric wavelengths probe the physical conditions and the energy release processes in the low corona as well as their association wit
Externí odkaz:
https://doaj.org/article/ee95fdcc5cb3405299b9588eef83696a
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
We study the characteristics of moving type IV radio bursts which extend to the hectometric wavelengths (interplanetary type IV or type IV IP bursts) and their relationship with energetic phenomena on the Sun. Our dataset comprises 48 interplanetary
Externí odkaz:
http://arxiv.org/abs/1604.07677