Community of European Solar Radio Astronomers (CESRA)

Solar Radio Astronomy - CESRA Comet 2I/Borisov was only the second interstellar object known to have entered the solar system. The highly eccentric, hyperbolic orbit of 2I/Borisov and its high inclination to the ecliptic plane dem...

Radio Scintillation Observations of the Plasma Tail of Interstellar Comet 2I/Borisov, by P K Manoharan et al.* www.astro.gla.ac.uk/users/eduard...
#Astronomy #radioastronomy

Solar Radio Astronomy - CESRA Solar radio bursts generated through the plasma emission mechanism produce radiation near the local plasma frequency (fundamental emission, hereafter, F) and double the plasma frequency (harmonic, her...

The frequency ratio and time delay of fundamental and harmonic components in solar radio bursts by X. Chen et al www.astro.gla.ac.uk/users/eduard...
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Solar Radio Astronomy - CESRA Solar type II radio bursts appear in the spectrograph records as slowly drifting emission lanes from high to low frequencies. They are due to plasma oscillations caused by the electrons accelerated at...

Solar coronal density turbulence and magnetic field strength at the source regions of two successive metric type II radio bursts by Ramesh et. al. www.astro.gla.ac.uk/users/eduard...
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Solar Radio Astronomy - CESRA Solar flares are known to be prolific electron accelerators, yet identifying the mechanism(s) for such efficient electron acceleration in magnetic reconnection events at the Sun (and similar astrophys...

Electron acceleration efficiency during the impulsive phase of a solar flare: X-ray and microwave observations by Kontar et al www.astro.gla.ac.uk/users/eduard...
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Solar Radio Astronomy - CESRA Radioheliographs and wideband solar radio spectrographs are essential components of the Chinese Meridian Project (CMP)‐II (C. Wang et al., 2024) that aims to monitor the whole solar‐terrestrial chain ...

Solar Radio Wide‐Band Spectroscopy and Imaging Facilities of the Chinese Meridian Project Phase II by Yihua Yan et al. www.astro.gla.ac.uk/users/eduard...
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Solar Radio Astronomy - CESRA One important task connected with the corona heating problem is exploring the physical mechanisms that produce, accelerate, and transport energetic particles in the upper corona. The magnetic connecti...

Temporal and Spatial Association Between Microwaves and Type III Bursts in the Upper Corona by Altyntsev et al. www.astro.gla.ac.uk/users/eduard...
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Solar Radio Astronomy - CESRA Radio bursts are frequently emitted in the outer solar corona due to the acceleration of energetic electrons in solar flares and coronal mass ejections (CME). The shortest observed bursts are radio sp...

Solar Radio Spikes and Type IIIb Striae Manifestations Triggered by a Coronal Mass Ejection by Clarkson et al www.astro.gla.ac.uk/users/eduard...
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Solar Radio Astronomy - CESRA A long-standing problem in solar energetic particle (SEP) studies is to pinpoint their source regions at the Sun. Potential contributions by both the flare and CME-driven shocks complicate the analysi...

A possible new scenario for widespread solar energetic particle events by Nina Dresing et al. www.astro.gla.ac.uk/users/eduard...
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Solar Radio Astronomy - CESRA We are striving for more accurate coronal magnetography based on changes in radio polarization as microwaves cross magnetic field lines at nearly right angles. The theory of using quasi-transverse pro...

Radio measurements of coronal magnetic fields in fan-spine configurations on the Sun by B. Ryabov and A. Vrublevskis www.astro.gla.ac.uk/users/eduard...
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Solar Radio Astronomy - CESRA Type II solar bursts are radio signatures of shock waves in the solar corona driven by solar flares or coronal mass ejections. Therefore, these bursts present complex spectral morphologies in solar dy...

Morphology of solar type II bursts caused by shock propagation through turbulent and inhomogeneous coronal plasma by A. Koval et al www.astro.gla.ac.uk/users/eduard...
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Solar Radio Astronomy - CESRA In the decimeter to centimeter wavelength, solar radio emission during bursts are generally accepted to be generated by gyrosynchrotron. The typical gyrosynchrotron spectra present reverse-V shapes. A...

A New 6-15 GHz Solar Radio Observation System, by Lei Zhang et al. www.astro.gla.ac.uk/users/eduard...
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Signatures of Large-Scale Magnetic Field Disturbances and Switchbacks in Interplanetary Type III Radio Bursts. Daniel L. Clarkson et. al. https://arxiv.org/abs/2601.19687

Solar Radio Astronomy - CESRA Density turbulence in the solar corona and solar wind is evident via the properties of solar radio bursts; angular scattering-broadening of extra-solar radio sources observed through the solar atmosph...

Anisotropic density turbulence variation from the low corona to 1 au as deduced from solar radio observations by E. Kontar et al. www.astro.gla.ac.uk/users/eduard...
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Solar Radio Astronomy - CESRA During times of high solar activity flares and coronal mass ejections (CMEs) occur close in time, sometimes even simultaneously, and it may be difficult to identify their source regions. Especially fa...

Separating the effects of earthside and far side solar events by Silja Pohjolainen et al. www.astro.gla.ac.uk/users/eduard...
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Solar Radio Astronomy - CESRA Interplanetary solar radio type III bursts provide the means to remotely study and track energetic electrons propagating in the interplanetary medium. Due to the lack of direct radio source imaging, s...

Source positions of an interplanetary type III radio burst and anisotropic radio-wave scattering by X. Chen et al. www.astro.gla.ac.uk/users/eduard...
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Solar Radio Astronomy - CESRA Recent years, several new generation solar radio telescopes operating in the centimeter decimeter (dm-cm) wavelengths have emerged in the world, including the Mingantu Spectral Radioheliograph (MUSER,...

The physics of solar spectral imaging observations in dm-cm wavelengths and space weather by Tan et al. www.astro.gla.ac.uk/users/eduard...
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Solar Radio Astronomy - CESRA The turbulent heliosphere has a significant effect on the observed characteristics of radio emission produced in, or viewed through, the solar atmosphere. In particular, radio-wave scattering on densi...

An Interactive Visual Tool for the Anisotropic Scattering of Solar Radio Bursts by Daniel L. Clarkson et al www.astro.gla.ac.uk/users/eduard...
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Solar Radio Astronomy - CESRA The solar corona and solar wind are turbulent plasma environments where energy transfer from large-scale magnetohydrodynamic (MHD) fluctuations to smaller kinetic scales is thought to play a critical ...

Tracing Ion-Scale Turbulence and Energy Cascade Rate from the Solar Corona to 1 au by E. P. Kontar et al. www.astro.gla.ac.uk/users/eduard...
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Solar Radio Astronomy - CESRA The study of solar wind acceleration and coronal heating has been a major challenge in solar physics. The main difficulty is that the collisionless characteristic of high-temperature, thin, and fully ...

Weak Solar Radio Bursts from the Solar Wind Acceleration Region Observed by the Parker Solar Probe and Its Probable Emission Mechanism by Ling Chen et al. www.astro.gla.ac.uk/users/eduard...
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Solar Radio Astronomy - CESRA Since the discovery of solar radio emission in the late 1940s, the Sun has been studied in great detail across a wide range of frequencies from a few tens of kHz to several hundreds of GHz. Solar radi...

Spectroscopic Imaging of the Sun with MeerKAT: Opening a New Frontier in Solar Physics by Kansabanik et al. www.astro.gla.ac.uk/users/eduard...
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Solar Radio Astronomy - CESRA Polarization, regardless of wavelength, is one of the key observables for understanding the solar atmosphere because it provides information about magnetic fields, and microwave polarization is also o...

Solar Microwave Polarization Observed by the Newest and Oldest Solar Radio Telescopes by Masumi Shimojo www.astro.gla.ac.uk/users/eduard...
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Solar Radio Astronomy - CESRA Here we release the spectral data of solar radio bursts recorded by the Chashan Broadband Solar radio spectrograph (CBSm), located in the Chashan mountain (E122°.30, N36°.84) that is the southern tip ...

Data Release of Solar Radio Bursts observed by CBSm at the metric wavelength by Yao Chen et al. www.astro.gla.ac.uk/users/eduard...
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Solar Radio Astronomy - CESRA Polarization, regardless of wavelength, is one of the key observables for understanding the solar atmosphere because it provides information about magnetic fields, and microwave polarization is also o...

Solar Microwave Polarization Observed by the Newest and Oldest Solar Radio Telescopes by Masumi Shimojo www.astro.gla.ac.uk/users/eduard...
#Astronomy #RadioAstronomy

Solar Radio Astronomy - CESRA Inelastic scattering off moving or oscillating density fluctuations leads to broadening of radio signals propagating in the solar corona and solar wind. Using an anisotropic density fluctuation model ...

Energetics of compressive waves in the solar corona by Francesco Azzollini et al www.astro.gla.ac.uk/users/eduard...
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Solar Radio Astronomy - CESRA Type III solar radio bursts are frequent and powerful radio emissions caused by electron beams travelling through the solar corona into the interplanetary medium, providing valuable information about ...

Time-Profile Study of Type III Solar Radio Bursts Using Parker Solar Probe by Tulsi Thapa and Yihua Yan www.astro.gla.ac.uk/users/eduard...
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Solar Radio Astronomy - CESRA Metric type II radio bursts are a type of solar radio emission characterized by a slowly drifting radio emission observed in dynamic spectra. They are generated by the interaction of a coronal shock w...

A Catalog of Metric Type II Radio Bursts Detected by RSTN During Solar Cycle 24 by Bendict Lawrance et al. www.astro.gla.ac.uk/users/eduard...
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Solar Radio Astronomy - CESRA Density fluctuations populating the heliosphere interfere with propagating radio photons, altering their trajectories through frequency-dependent effects like scattering. Crucially, these density fluc...

The angular and frequency dependence of solar radio burst rise and decay times using multi-spacecraft observations by Nicolina Chrysaphi et al. www.astro.gla.ac.uk/users/eduard...
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Solar Radio Astronomy - CESRA The narrowband decimetric spikes belong to the most interesting solar radio bursts, because they are connected to the primary flare process.  Their brightness temperature is up to 1015 K. In the radio...

Periods and frequency drifts of groups of narrowband decimetric spikes by M. Karlický, J. Dudík and J. Rybák www.astro.gla.ac.uk/users/eduard...
#Astronomy #radioAstronomy

Solar Radio Astronomy - CESRA It has been established that decimeter type III bursts are generated in the upper corona by electron beams. However, many questions remain about their sources to this day. Some were associated with th...

Generation of Series of Meter/Decimeter III type Bursts During Thermal Phase of Solar Flare by Meshalkina and Altyntsev www.astro.gla.ac.uk/users/eduard...
#AAS #Astronomy #RadioAstronomy

Solar Radio Astronomy - CESRA Coronal holes (CHs) are regions of reduced brightness in solar disk images in extreme ultraviolet (EUV) or soft X-ray emissions corresponding to configurations with open magnetic field lines. Data on ...

Observations of coronal holes with the Siberian Radio Heliograph by Altyntsev et al. www.astro.gla.ac.uk/users/eduard...
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