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相关论文: Type III events, flares and CMEs, in the extremely…

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The Sun is an active source of radio emission which is often associated with the acceleration of electrons arising from processes such as solar flares and coronal mass ejections (CMEs). At low radio frequencies (<100 MHz), numerous solar S…

太阳与恒星天体物理 · 物理学 2019-04-17 D. E. Morosan , P. T. Gallagher

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…

太阳与恒星天体物理 · 物理学 2015-03-18 A. Hillaris , O. Malandraki , K. -L Klein , P. Preka-Papadema , X. Moussas , C. Bouratzis , E. Mitsakou , P. Tsitsipis , A. Kontogeorgos

Energetic electrons accelerated by solar flares often give rise to type III radio bursts at a broad waveband and even interplanetary type III bursts (IT3) if the wavelength extends to decameter-kilometer. In this Letter, we investigate the…

太阳与恒星天体物理 · 物理学 2020-07-29 Y. K. Kou , Z. C. Jing , X. Cheng , W. Q. Pan , Y. Liu , C. Li , M. D. Ding

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 the ARTEMIS-IV radio spectrograph, in the 100-650 MHz…

We present a statistical study of dynamical and kinetic characteristics of CMEs which show temporal and spatial association with flares and type II radio bursts or complex radio events of type II bursts and type IV continua. This study is…

太阳与恒星天体物理 · 物理学 2010-09-24 M. Georgiou , E. Mitsakou , G. Pothitakis , A. Hillaris , P. Preka-Papadema , X. Moussas

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 October-November 2003. These bursts exhibit very rich fine…

We have statistically analyzed a set of 115 low frequency (Deca- Hectometer wavelengths range) type II and type III bursts associated with major Solar Energetic Particle (SEP: Ep > 10 MeV) events and their solar causes such as solar flares…

太阳与恒星天体物理 · 物理学 2020-07-14 P. Pappa Kalaivani , A. Shanmugaraju , O. Prakash , R. -S. Kim

We study solar energetic particle (SEP) events during multiple solar eruptions. The analysed sequences, on 24-26 November 2000, 9-13 April 2001, and 22-25 August 2005, consisted of halo-type coronal mass ejections (CMEs) that originated…

太阳与恒星天体物理 · 物理学 2015-12-16 Silja Pohjolainen , Firas Al-Hamadani , Eino Valtonen

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 spectrograph (100-650 MHz range); the GOES SXR flares and…

From 2018 Oct 12 to 13, three successive solar eruptions (E1--E3) with B-class flares and poor white light coronal mass ejections (CMEs) occurred from the same active region NOAA AR 12724. Interestingly, the first two eruptions are…

太阳与恒星天体物理 · 物理学 2020-05-01 Suli Ma , Huadong Chen

A high-speed halo-type coronal mass ejection (CME), associated with a GOES M4.6 soft X-ray flare in NOAA AR 0180 at S12W29 and an EIT wave and dimming, occurred on 9 November 2002. A complex radio event was observed during the same period.…

天体物理学 · 物理学 2008-01-21 N. J. Lehtinen , S. Pohjolainen , K. Huttunen-Heikinmaa , E. Valtonen , R. Vainio , A. E. Hillaris

During solar flares a large amount of electrons with energies greater than 20 keV is generated with a production rate of typically $10^{36}$ s$^{-1}$. A part of them is able to propagate along open magnetic field lines through the corona…

太阳与恒星天体物理 · 物理学 2015-11-11 F. Breitling , G. Mann , C. Vocks

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 intensity, impulsiveness and energetics of these events are…

We report on four large filament eruptions (FEs) from solar cycles 23 and 24 that were associated with large solar energetic particle (SEP) events and interplanetary type II radio bursts. The post-eruption arcades corresponded to mostly…

太阳与恒星天体物理 · 物理学 2015-06-11 N. Gopalswamy , P. Makela , S. Akiyama , S. Yashiro , H. Xie , N. Thakur , S. W. Kahler

We report on the close similarity of coronal mass ejection (CME) properties in ground level enhancement (GLE) in solar energetic particle (SEP) events and sustained gamma ray emission (SGRE) from the Sun as indicated by low frequency type…

太阳与恒星天体物理 · 物理学 2023-08-24 Nat Gopalswamy , Anshu Kumari , Pertti A. Mäkelä

We study the association of solar flares with coronal mass ejections (CMEs) during the deep, extended solar minimum of 2007-2009, using extreme-ultraviolet (EUV) and white-light (coronagraph) images from the {\it Solar Terrestrial Relations…

太阳与恒星天体物理 · 物理学 2015-06-16 N. V. Nitta , M. J. Aschwanden , S. L. Freeland , J. R. Lemen , J. -P. Wülser , D. M. Zarro

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…

太阳与恒星天体物理 · 物理学 2016-06-28 Alexander Hillaris , Constantine Bouratzis , Alexander Nindos

In the standard model of solar eruptive events, coronal mass ejections (CMEs) and flares are associated with each other through magnetic reconnection initiated by erupting flux ropes. Observations also reveal an increasing association ratio…

太阳与恒星天体物理 · 物理学 2025-06-24 Changxue Chen , Yang Su , Wei Chen , Jingwei Li , Fu Yu , Weiqun Gan

The present study explores the ionospheric effects of the well cited solar flare events (M3.2, M3.9/2N) of 18 November 2003 associated with CMEs. The H{\alpha} observations of these flares (taken with 15 cm Solar Tower Telescope at ARIES,…

太阳与恒星天体物理 · 物理学 2010-11-16 Pankaj Kumar , Wahab Uddin , Alok Taori , Ramesh Chandra , Shuchi Bisht

Type III radio bursts are intense radio emissions triggered by beams of energetic electrons often associated with solar flares. These exciter beams propagate outwards from the Sun along an open magnetic field line in the corona and in the…

太阳与恒星天体物理 · 物理学 2015-08-19 Vratislav Krupar , Eduard P. Kontar , Jan Soucek , Ondrej Santolik , Milan Maksimovic , Oksana Kruparova
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