Solar Radio Emissions

Dear Colleagues,

Solar radio astronomy is a burgeoning field affecting almost all branches of solar physics, space weather, and even other branches of astrophysics. Solar radio emissions come not only from various kinds of solar activities, but also from the Sun, from the photosphere, through the chromosphere to the corona, and far into interplanetary space; the related frequency spans more than 5 orders of magnitude from several hundreds of GHz (sub-mm wavelength) down to sub-MHz (km wavelength). Radio emissions are very sensitive to the acceleration and propagation of nonthermal electrons, plasma instabilities, magnetic fields and their variations, magnetic reconnections and violent energy releases, various scales of shock waves, etc. Solar radio observations can possibly be applied to measure the magnetic fields in the very hot and diluted coronal atmosphere, to reveal the mystery of coronal heating, to detect energetic particle acceleration and propagation, to explore the origin of solar violent eruptions (including solar flares, CMEs, various scales of jets, etc.) and track their temporal and spatial evolutions, and to provide crucial information for predicting space weather.

Recently, a series of advanced solar radio telescopes were put into operation and obtained a large amount of observation data. These new instruments include MUSER, EVOSA, SRH, LOFAR, MWA, ALMA and PSP. Through their high-sensitivity and high-resolution solar radio observations, we have the opportunity to give new explanations to the above important problems, discover new physics knowledge and make new scientific breakthroughs. In order to exhibit the new, up-to-date progress obtained in this domain, we are organizing the Special Issue, “Solar Radio Emissions”, and invite colleagues to submit their new manuscripts on one or more of the following topics for this Special Issue:

• New observational phenomena of solar radio emissions;
• New discoveries of spectral fine structures of solar radio bursts;
• New theoretical explanations of solar radio bursts, including an explanation of the origin and formation mechanism of the solar radio Zebra pattern, fiber bursts, spike groups, the fine structures of type II, III, and IV bursts, and multi-timescale QPP;
• Radio signals of magnetic reconnections and shock waves;
• Radio precursors of solar flares and CMEs;
• Diagnostics of coronal magnetic fields from radio emissions;
• Radio emissions related to particle acceleration and propagations;
• Advanced methods to predict solar activities and space weather by using solar radio observations;
• Possible clues for new physics knowledge hidden by solar radio emissions, such as signals for dark matter, solar interior structures and dynamics, etc.

Prof. Dr. Baolin Tan
Dr. Jing Huang
Guest Editors

Manuscript Submission Information

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• solar radio emissions
• magnetic reconnection
• particle acceleration
• propagation
• shock wave