7516 20250204104418.0 10.1007/s11600-024-01421-4 DOI SCART-2025-0115 Dabrowski, Bartosz Fine structures of a solar type III radio bursts observed with LOFAR 2025 We present spectral and imaging LOFAR (LOw-Frequency ARray) observations in the 20 – 40 MHz range of solar radio bursts fine structures, such as flag-like, sail-like, and dot-like that appeared on 8 April 2019. These structures were associated with type III solar radio bursts that occurred in the 40 – 80 MHz band. The mean duration and spectral widths of the fine structures range from 1.0 to 3.4 s and from 0.3 to 0.9 MHz, respectively. Additionally, we investigated the radio images of eight fine structures – two flags, two sails and four dots. This allowed us to determine their emission source sizes, which ranged from 240 to 392 arcmin2, and their frequencies from 25.58 to 39.25 MHz as well as their location. They occurred on the east side of the Sun and were most likely associated with an emerging active region NOAA AR 12738, where a weak B1.7 flare was observed. NO Sun Radio Bursts Fine structures Corona LOFAR Wolowska, Aleksandra Vocks, Christian Magdalenić, Jasmina Zhang, Peijin Flisek, Pawel Bröse, Malte Morosan, Diana E Krankowski, Andrzej Fron, Adam Mann, Gottfried Zucca, Pietro Bisi, Mario Fallows, Richard Gallagher, Peter Marqué, Christophe Matyjasiak, Barbara Rothkaehl, Hanna Acta Geophysica 73 2025 1 987-993 pavai.valliappan@ksb-orb.be published in REFERD