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Type III radio bursts are the result of plasma emission from mildly relativistic electron beams propagating from the low solar corona into the heliosphere where they can eventually be detected in situ if they align with the location of a…

The publications of the last three years concerning the study of the most intriguing fine structure in type IV solar radio bursts, zebra pattern (ZP), are surveyed. The main attention is paid to new observations, irrespective of whether a…

Solar and Stellar Astrophysics · Physics 2016-03-15 Gennady Chernov

A spectacular manifestation of solar activity is the appearance of transient brightenings in the far wings of the H$\alpha$ line, known as Ellerman bombs (EBs). Recent observations obtained by the Interface Region Imaging Spectrograph…

Radio observations from space allow to characterize solar radio bursts below the ionospheric cutoff, which are otherwise inaccessible, but suffer from low, insufficient temporal resolution. In this Letter we present novel, high-temporal…

Solar and Stellar Astrophysics · Physics 2024-10-25 Antonio Vecchio , Milan Maksimovic , Nicolina Chrysaphi , Eduard P. Kontar , Vratislav Krupar

Electron beams accelerated in solar flares and escaping from the Sun along open magnetic field lines can trigger intense radio emissions known as type III solar radio bursts. Utilizing observations by Parker Solar Probe (PSP), STEREO-A…

Solar and Stellar Astrophysics · Physics 2025-10-02 Francesco Azzollini , Eduard P. Kontar

The Sun is the source of different types of radio bursts that are associated with solar flares, for example. Among the most frequently observed phenomena are type III solar bursts. Their radio images at low frequencies (below 100 MHz) are…

The interpretation of solar radio bursts observed by Parker Solar Probe (PSP) in the encounter phase plays a key role in understanding intrinsic properties of the emission mechanism in the solar corona. Lower time-frequency resolution of…

Solar and Stellar Astrophysics · Physics 2021-12-22 Aleksander A. Stanislavsky , Igor N. Bubnov , Artem A. Koval , Serge N. Yerin

We present first results of a solar radio event observed with the Owens Valley Radio Observatory Long Wavelength Array (OVRO-LWA) at metric wavelengths. We examine a complex event consisting of multiple radio sources/bursts associated with…

Solar and Stellar Astrophysics · Physics 2021-01-27 Sherry Chhabra , Dale E. Gary , Gregg Hallinan , Marin M. Anderson , Bin Chen , Lincoln J. Greenhill , Danny C. Price

Solar radio bursts are some of the brightest emissions at radio frequencies in the solar system. The emission mechanisms that generate these bursts offer a remote insight into physical processes in solar coronal plasma, while fine spectral…

Solar and Stellar Astrophysics · Physics 2024-01-10 Pearse C. Murphy , Baptiste Cecconi , Carine Briand , Stéphane Aicardi

In the physics of solar flares, it is crucial to diagnose the physical conditions near the flare energy-release sites. However, so far it is unclear how do diagnose these physical conditions. Solar microwave type III burst is believed to be…

Solar and Stellar Astrophysics · Physics 2016-05-17 Baolin Tan , Marian Karlicky , Hana Meszarosova , Guangli Huang

There are by now ten published detections of fast radio bursts (FRBs), single bright GHz-band millisecond pulses of unknown origin. Proposed explanations cover a broad range from exotic processes at cosmological distances to atmospheric and…

As is well known, CME propagation often results in the fragmentation of the solar atmosphere on smaller regions of density (magnetic field) enhancement (depletion). It is expected that this type of fragmentation may have radio signatures.…

Solar and Stellar Astrophysics · Physics 2019-05-15 G. Dididze , B. M. Shergelashvili , V. N. Melnik , V. V. Dorovskyy , A. I. Brazhenko , S. Poedts , T. V. Zaqarashvili , M. Khodachenko

Fast Radio Bursts are millisecond bursts of radio radiation at frequencies of about 1 GHz, recently discovered in pulsar surveys. They have not yet been definitively identified with any other astronomical object or phenomenon. The bursts…

High Energy Astrophysical Phenomena · Physics 2016-05-10 J. I. Katz

Type III radio bursts are a signature of the flux of near-relativistic electrons ejected during solar flares. These bursts are frequently observed by spacecraft such as the Parker Solar Probe. It is traditionally believed that these…

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…

Solar and Stellar Astrophysics · Physics 2015-08-19 Vratislav Krupar , Eduard P. Kontar , Jan Soucek , Ondrej Santolik , Milan Maksimovic , Oksana Kruparova

Preflare activities contain critical information about the pre-cursors and causes of solar eruptions. Here we investigate the characteristics and origin of a group of broadband pulsations (BBPs) in the decimetric-metric wavelengths, taking…

Solar and Stellar Astrophysics · Physics 2023-06-14 Maoshui Lv , Baolin Tan , Ruisheng Zheng , Zhao Wu , Bing Wang , Xiangliang Kong , Yao Chen

We report multi-wavelength observations of four solar flares on 2014 July 07. We firstly select these flares according to the soft X-ray (SXR) and extreme ultraviolet (EUV) emissions recorded by the Extreme Ultraviolet Variability…

Solar and Stellar Astrophysics · Physics 2021-05-05 Dong Li , Alexander Warmuth , Lei Lu , Zongjun Ning

Type III and type-III-like radio bursts are produced by energetic electron beams guided along coronal magnetic fields. As a variant of type III bursts, Type N bursts appear as the letter "N" in the radio dynamic spectrum and reveal a…

Solar and Stellar Astrophysics · Physics 2016-10-19 Xiangliang Kong , Yao Chen , Shiwei Feng , Guohui Du , Chuanyang Li , Artem Koval , V. Vasanth , Bing Wang , Fan Guo , Gang Li

Discussion about the nature of zebra-structure (ZS) in the type IV radio bursts continues, despite the ten proposed models. First of all, this is due to the wide variety of stripes in each new phenomenon, when the explanation of all the…

Solar and Stellar Astrophysics · Physics 2017-04-11 G. P. Chernov , V. V. Fomichev , R. A. Sych

Electron acceleration in the solar corona is often associated with flares and the eruption of twisted magnetic structures known as flux ropes. However, the locations and mechanisms of such particle acceleration during the flare and eruption…

Solar and Stellar Astrophysics · Physics 2016-12-14 Eoin P. Carley , Nicole Vilmer , Peter T. Gallagher
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