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Large solar energetic particle (SEP) events are thought to originate from the shocks driven by fast coronal mass ejections (CMEs) and thus generally accompanied by type II radio bursts. However, a significant proportion of type II radio…

太阳与恒星天体物理 · 物理学 2026-04-23 Xuchun Duan , Ting Li , Yingli Cui , Yijun Hou , Chuan Li , Nicolas Wijsen , Zelong Jiang , Yihua Yan , Suli Ma , Zheng Sun

We study selected properties of Solar Energetic Particle (SEP) events as inferred from their associated radio emissions. We used a catalogue of 115 SEP events that consists of entries of proton intensity enhancements at one AU, with…

太阳与恒星天体物理 · 物理学 2015-08-12 A. Kouloumvakos , A. Nindos , E. Valtonen , C. E. Alissandrakis , O. Malandraki , P. Tsitsipis , A. Kontogeorgos , X. Moussas , A. Hillaris

Metric type II solar radio bursts and solar energetic particles (SEPs) are both associated with shock fronts driven by coronal mass ejections (CMEs) in the solar corona. Recent studies of ground level enhancements (GLEs), regular large…

空间物理 · 物理学 2020-01-29 Pertti Mäkelä , Nat Gopalswamy , Hong Xie , Sachiko Akiyama , Seiji Yashiro , Neeharika Thakur

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 investigated the relationship between the spectral structures of type II solar radio bursts in the hectometric and kilometric wavelength ranges and solar energetic particles (SEPs). To examine the statistical relationship between type II…

太阳与恒星天体物理 · 物理学 2020-01-15 Kazumasa Iwai , Seiji Yashiro , Nariaki V. Nitta , Yuki Kubo

Solar energetic particles (SEPs) are an important product of solar activity. They are connected to solar active regions and flares, coronal mass ejections (CMEs), EUV waves, shocks, Type II and III radio emissions, and X-ray bursts. These…

We explore the link between solar energetic particles (SEPs) observed at 1 AU and large-scale disturbances propagating in the solar corona, named after the Extreme ultraviolet Imaging Telescope (EIT) as EIT waves, which trace the lateral…

太阳与恒星天体物理 · 物理学 2015-06-18 R. Miteva , K. -L. Klein , I. Kienreich , M. Temmer , A. Veronig , O. E. Malandraki

In this work, we examine the association between solar active regions and 152 solar flares, coronal mass ejections, and solar energetic particle (SEP) events over solar cycles 23-24 (1997-2017). The CDAW center's GOES data in the energy…

太阳与恒星天体物理 · 物理学 2025-04-21 Raj Kumar , Ramesh Chandra , Bimal Pande , Seema Pande

We study the influence of the large-scale interplanetary magnetic field configuration on the solar energetic particles (SEPs) as detected at different satellites near Earth and on the correlation of their peak intensities with the parent…

太阳与恒星天体物理 · 物理学 2014-03-05 R. Miteva , K. -L. Klein , O. Malandraki , G. Dorrian

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 present a statistical study on the observed solar radio burst emission associated with the origin of in situ detected solar energetic particles. Several proton event catalogs in the period 1996$-$2016 are used. At the time of appearance…

太阳与恒星天体物理 · 物理学 2017-11-28 Rositsa Miteva , Susan W. Samwel , Vratislav Krupar

Solar Energetic Particles (SEPs) and radio bursts are indicators of particle acceleration on the Sun and in the heliosphere. The accelerated particles have energies significantly higher than thermal particles up to several orders of…

太阳与恒星天体物理 · 物理学 2024-10-14 Nat Gopalswamy

Using the Wind/WAVES radio observations from 2010-2013, we present an analysis of the 123 decametric-hectometric (DH) type II solar radio bursts during this period, the associated type III burst properties, and their correlation with solar…

太阳与恒星天体物理 · 物理学 2015-08-19 L. M. Winter , K. Ledbetter

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

A gradual solar energetic particle (SEP) event is thought to happen when particles are accelerated at a shock due to a fast coronal mass ejection (CME). To quantify what kind of solar eruptions can result in such SEP events, we have…

太阳与恒星天体物理 · 物理学 2017-02-10 O. Prakash , Li Feng , G. Michalek , Weiqun Gan , Lei Lu , A. Shanmugaraju , S. Umapathy

Solar radio bursts (SRBs) are the signatures of various phenomena that happen in the solar corona and interplanetary medium (IPM). In this article, we have studied the occurrence of Type III bursts and their association with the Sunspot…

太阳与恒星天体物理 · 物理学 2021-01-19 Theogene Ndacyayisenga , Jean Uwamahoro , K. Sasikumar Raja , Christian Monstein

In addition to their anomalous abundances, 3He-rich solar energetic particles (SEPs) show puzzling energy spectral shapes varying from rounded forms to power laws where the later are characteristics of shock acceleration. Solar sources of…

太阳与恒星天体物理 · 物理学 2016-12-21 R. Bucik , D. E. Innes , G. M. Mason , M. E. Wiedenbeck

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 on the Sun. A sample of Type III bursts in the range 20-650…

Metre wavelength type II solar radio bursts are believed to be the signatures of shock-accelerated electrons in the corona. Studying these bursts can give information about the initial kinematics, dynamics and energetics of CMEs in the…

太阳与恒星天体物理 · 物理学 2023-07-12 Anshu Kumari , Diana E. Morosan , E. K. J. Kilpua , F. Daei

We report on further evidence that solar energetic particles are organized by the kinematic properties of coronal mass ejections (CMEs)[1]. In particular, we focus on the starting frequency of type II bursts, which is related to the…

太阳与恒星天体物理 · 物理学 2017-10-11 N Gopalswamy , P Mäkelä , S Yashiro , N Thakur , S Akiyama , H Xie
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