CESRA science nuggets - CESRA: Community of European Solar Radio Astronomers

A solar jet-induced perturbation propagating through coronal loops and in-loop electron beam transport as indicated by type II and type N radio bursts by Xiangliang Kong

May 12, 2026

Solar type II radio bursts are slow-drifting emissions in radio dynamic spectra, traditionally interpreted as signatures of shock waves driven by fast coronal mass ejections (CMEs). They provide the primary diagnostics for energetic electron acceleration and transport in solar eruptions. However, a puzzling class of metric type II bursts occurs without any detectable CME and is linked only to relatively weak solar flares and small-scale jets. The fundamental question is: […]

Signatures of Large-scale Magnetic Field Disturbances and Switchbacks in Interplanetary Type III Radio Bursts by Daniel L. Clarkson et al.

April 30, 2026

Solar radio bursts are intrinsically linked to the motion of their emitting source through the coronal and heliospheric plasma. Electron transport is mostly confined to magnetic field lines. These electrons move at a substantial fraction of the speed of light and often generate radio emission via the plasma emission process. The resulting radio bursts, such as type III bursts from electrons streaming along open field lines, are an excellent diagnostic […]

Dataset for Recognition and Detection Based on Solar Radio Spectrogram Data by Yan et al

April 14, 2026

Solar radio bursts and their fine spectral structures contain key physical information related to plasma instabilities, high-energy particle acceleration, and other important processes. They therefore serve as an important observational means for studying solar activity and space weather. With the increasing volume of solar radio spectrogram observation data, deep learning-based recognition and detection of solar radio bursts have become a key research direction. However, most studies on meter-wave solar radio […]

Technical Readiness of MeerKAT for Solar Observations and Initial Science Results by D. Kansabanik et al.

March 31, 2026

Solar radio emissions offer unique diagnostic insights into the solar corona. However, their dynamic and multiscale nature, along with variations spanning several orders of magnitude in intensity, pose significant observational challenges. To date, at gigahertz frequencies, MeerKAT (Jonas & MeerKAT Team 2016) stands out globally for its intrinsic ability to produce high-fidelity, spectroscopic snapshot images of the Sun. This is enabled primarily by its dense core, high sensitivity, and broad […]

Non-thermal energy release in the post-impulsive phase of the May 9, 2021 event by M. Zhang et al.

March 17, 2026

The acceleration of charged particles is an ubiquitous phenomenon in solar flares. Non-thermal electrons are especially probed by their hard X-ray (HXR) and radio emissions. Most flare analyses concern the impulsive flare phase, where the X-ray signatures are the most intense (i.e., the time range between the start and peak time of the soft X-ray burst).The post-impulsive phase of eruptive flares with its signatures of destabilization and the eruption of […]