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Related papers: A Model for Radio Emission from Solar Coronal Shoc…

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Context. The Sun is an active source of radio emission ranging from long duration radio bursts associated with solar flares and coronal mass ejections to more complex, short duration radio bursts such as solar S bursts, radio spikes and…

Solar and Stellar Astrophysics · Physics 2016-04-19 D. E. Morosan , P. Zucca , D. S. Bloomfield , P. T. Gallagher

Type II radio bursts are solar radio emissions generated by electrons accelerated by coronal shocks. These bursts are typically found close to expanding coronal mass ejections (CMEs), making them valuable for studying the properties and…

Solar and Stellar Astrophysics · Physics 2026-05-13 K. Bhandari , D. E. Morosan , S. Normo

Context. Coronal mass ejections (CMEs) are large eruptions of magnetised plasma from the Sun that are often accompanied by solar radio bursts produced by accelerated electrons. Aims. A powerful source for accelerating electron beams are…

Solar and Stellar Astrophysics · Physics 2020-10-14 D. E. Morosan , E. Palmerio , J. E. Räsänen , E. K. J. Kilpua , J. Magdalenić , B. J. Lynch , A. Kumari , J. Pomoell , M. Palmroth

The Sun produces the most powerful explosions in the solar system, solar flares, that can also be accompanied by large eruptions of magnetised plasma, coronal mass ejections (CMEs). These processes can accelerate electron beams up to…

Solar and Stellar Astrophysics · Physics 2023-07-05 D. E. Morosan , J. Pomoell , A. Kumari , E. K. J. Kilpua , R. Vainio

Solar coronal radio bursts are enhanced radio emission excited by energetic electrons accelerated during solar eruptions, studies on which are important for investigating the origin and physical mechanism of energetic particles and further…

Solar and Stellar Astrophysics · Physics 2016-08-08 S. W. Feng , Y. Chen , H. Q. Song , B. Wang , X. L. Kong

Solar type II radio bursts are commonly attributed to coronal shocks driven by coronal mass ejections (CMEs). However, some metric type II bursts have occasionally been reported to occur in the absence of a CME and to be associated with…

Solar and Stellar Astrophysics · Physics 2025-12-23 Yingli Cui , Xiangliang Kong , Zhentong Li , Bing Wang , Yadan Duan , Ze Zhong , Hao Ning , Zhao Wu , Manqing Wang , Yang Liu , Feiyu Yu , Zelong Jiang , Wei Chen , Yang Su , Yao Chen

Coronal Mass Ejections (CMEs) are believed to be effective in producing shocks in the solar corona and the interplanetary space. One of the important signatures of shocks and shock acceleration are Type II solar radio bursts that drift with…

Solar and Stellar Astrophysics · Physics 2018-11-28 Nicolina Chrysaphi , Eduard P. Kontar , Gordon D. Holman , Manuela Temmer

The Sun produces highly dynamic and eruptive events that can drive shocks through the corona. These shocks can accelerate electrons, which result in plasma emission in the form of a type II radio burst. Despite the large number of type II…

Solar and Stellar Astrophysics · Physics 2021-03-10 Ciara A. Maguire , Eoin P. Carley , Pietro Zucca , Nicole Vilmer , Peter T. Gallagher

Mark 4, COR1/STEREO and LASCO/SOHO data analysis shows that at least a portion of type II radio bursts observed in the corona occurs in the presence of a CME, but in the absence of a shock ahead of them. A drift current instability in the…

Solar and Stellar Astrophysics · Physics 2011-05-19 V. G. Eselevich , M. V. Eselevich

Coronal mass ejections (CMEs) are massive expulsions of magnetised plasma from a star, and are the largest contributors to space weather in the Solar System. CMEs are theorized to play a key role in planetary atmospheric erosion, especially…

Aims: Solar radio type II bursts are rarely seen at frequencies higher than a few hundred MHz. Since metric type II bursts are thought to be signatures of propagating shock waves, it is of interest to know how these shocks, and the type II…

Astrophysics · Physics 2009-11-13 S. Pohjolainen , J. Pomoell , R. Vainio

Solar type II radio bursts are the signature of particle acceleration by shock waves in the solar corona and interplanetary medium. The shocks originate in solar eruptions involving coronal mass ejections (CMEs) moving at super-Alfvenic…

Solar and Stellar Astrophysics · Physics 2019-12-17 Nat Gopalswamy , Pertti Mäkelä , Seiji Yashiro

The most intense solar energetic particle events are produced by coronal mass ejections (CMEs) accompanied by intense type II radio bursts below 15 MHz. Understanding where these type II bursts are generated relative to an erupting CME…

Solar and Stellar Astrophysics · Physics 2021-12-08 Alexander M. Hegedus , Ward B. Manchester , Justin C. Kasper

We report on a multi-wavelength analysis of the 26 January 2014 solar eruption involving a coronal mass ejection (CME) and a Type-II radio burst, performed by combining data from various space-and ground-based instruments. An increasing…

Super-Alfv\'enic shock waves associated with coronal mass ejections (CMEs) can produce radio emission known as Type II bursts. In the absence of direct imaging, accurate estimates of coronal electron densities, magnetic field strengths and…

Solar and Stellar Astrophysics · Physics 2014-05-08 Pietro Zucca , Eoin P. Carley , D. Shaun Bloomfield , Peter T. Gallagher

Type II solar radio bursts are commonly associated with shocks generated by coronal mass ejections (CMEs), where plasma waves are excited by magnetohydrodynamic (MHD) processes and converted into radio waves at the local plasma frequency or…

Solar and Stellar Astrophysics · Physics 2025-10-07 Anshu Kumari , Nat Gopalswamy

Two solar type II radio bursts, separated by ~24 hours in time, are examined together. Both events are associated with coronal mass ejections (CMEs) erupting from the same active region (NOAA 11176) beneath a well-observed helmet streamer.…

Solar and Stellar Astrophysics · Physics 2015-06-23 Xiangliang Kong , Yao Chen , Fan Guo , Shiwei Feng , Bing Wang , Guohui Du , Gang Li

Context. Some of of the most prominent sources for energetic particles in our Solar System are huge eruptions of magnetised plasma from the Sun called coronal mass ejections (CMEs), which usually drive shocks that accelerate charged…

Solar and Stellar Astrophysics · Physics 2022-11-14 D. E. Morosan , J. Pomoell , A. Kumari , R. Vainio , E. K. J. Kilpua

Coronal mass ejections (CMEs) on stars other than the Sun have proven very difficult to detect. One promising pathway lies in the detection of type II radio bursts. Their appearance and distinctive properties are associated with the…

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