gyrosynchrotron emission

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 Possible Indication of the Insufficiency of Simplistic Homogeneous Models for Estimating Magnetic Fields of CMEs using Gyrosynchrotron Emission by Devojyoti Kansabanik et al.

November 19, 2024

Coronal mass ejections (CMEs) are large-scale plasma and magnetic field expulsions from the solar corona into the heliosphere. The magnetic field entrained in the CME plasma is crucial to understanding their propagation, evolution, and geo-effectiveness. Among the different observables at radio wavelengths, spectral modeling of faint gyrosynchrotron (GS) emission from CME plasma has been regarded as one of the most promising remote observing techniques for estimating spatially resolved CME magnetic […]

Deciphering Faint Gyrosynchrotron Emission from a Coronal Mass Ejection Using Spectropolarimetric Radio Imaging by Devojyoti Kansabanik, Surajit Mondal and Divya Oberoi

October 31, 2023

Coronal mass ejections (CMEs) are large-scale expulsion of plasma and magnetic fields from the solar corona into the heliosphere. Magnetic field entrained in the CME plasma is crucial to understand their propagation, evolution, and geo-effectiveness. Among the different observables at radio wavelengths, spectral modeling of faint gyrosynchrotron (GS) emission from CME plasma has been regarded as one of the most promising remote observing techniques for estimating spatially resolved CME magnetic […]

A New 6-15 GHz Solar Radio Observation System, by Lei Zhang et al.

October 11, 2023

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. And the spectral parameters, including the peak frequency, peak flux and declining spectra etc. can provide crucial information of the bursts. The spectral peak usually appears around 10 GHz. And it is demanded that a continuum observation can cover this frequency range. Meanwhile, the […]

New treatment of gyroresonance and free-free radio emissions from multi-thermal multi-component plasma by A. Kuznetsov et al.*

July 20, 2021

Thermal plasma in the solar corona is often characterized by a range of temperatures. This plasma can be described by the differential emission measure (DEM), which is a distribution of the thermal electron density square over temperature. The DEM-based treatment is widely used in application to the optically thin EUV and X-ray emissions. However, there has been no corresponding treatment in the radio domain, where optical depth of emission can […]