LOFAR imaging spectroscopy reveals spike-like repeating radio burst pairs in the solar corona by Suli Ma et al.

June 17, 2026

The solar atmosphere is a turbulent and magnetized environment, with the release of magnetic energy readily manifesting as emission across the electromagnetic spectrum. Solar radio emission dominates the radio sky, with the brightest solar radio bursts generated via the plasma emission process. The emission has a complex frequency-time structure with many features that are yet to be understood. Observations Using the LOw Frequency ARray (LOFAR) radio telescope (van Haarlem et […]

First Observational Evidence for Meridional Flow-like Profile in 17 GHz: Magnetic Trees on the Sun? by Srinjana Routh et al.

June 17, 2026

Decrypting the behaviour of large-scale flows in the Sun, namely the differential rotation and the meridional circulation, is detrimental to the understanding of the evolution of the solar magnetic field in the global context. Among them, the meridional flow has been notoriously difficult to measure, owing to the fact that it is an order of magnitude lower than the differential rotation measurements, with its existence in the higher solar atmosphere […]

A 19-day solar radio burst: a corotating radio reservoir in the outer corona by Vratislav Krupar et al.

June 16, 2026

Solar radio astronomers are used to type IV bursts as the long afterglow of eruptive activity: broadband continua, often polarized, produced by energetic electrons trapped in post-eruption magnetic structures. But “long” usually means minutes to hours, sometimes longer in exceptional cases. The event reported by Krupar et al. 2026 changes that scale. A hectometric type IV continuum between about 0.5 and 3 MHz was observed over nearly 19 days, from […]

MeerKAT imaging spectroscopy reveals multiple electron acceleration sites in a solar flare by Luo et al.

June 9, 2026

Solar flares are the most explosive energy-release events in the solar corona, leading to intense particle acceleration, plasma heating, and bulk plasma motions on short timescales. Core questions during solar flares remain unresolved, including how and where particle acceleration occurs, and how energized electrons propagate through coronal magnetic structures. Radio observations, due to their unique sensitivity to nonthermal and thermal electrons, serve as powerful diagnostics of electron dynamics and high-temperature […]

Interplanetary Type III radio Emission Locations determined from the Underlying Electron Exciter Beam Kinematics by Michael Reiner

May 26, 2026

Type III solar radio bursts, which appear as characteristic frequency-drifting features on radio dynamic spectra, are generated by energetic beams of electrons originating in solar active regions and propagating through the solar corona and interplanetary medium. The early low frequency spacecraft observations of interplanetary type III bursts prompted efforts to locate and track the observed radio source regions through the interplanetary medium. Without imaging capabilities on interplanetary spacecraft, a number […]