OVSA Science Highlights

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Latest Highlights

OVSA Science Highlight No. 1: Microwave Precursor of a Major Solar Eruption

A study by Kou et al. presents the first spatially resolved microwave imaging spectroscopy of the precursor phase of a major solar eruption. The findings reveal that thermal electron emissions dominate during the slow-rise phase, supporting a scenario of moderate magnetic reconnection prior to the flare’s impulsive onset. [Contributed by Y. Kou; Edited by B. Chen. Posted on August 2, 2025.]