The low-frequency flattening of the radio spectrum of giant HII regions in M 101

• Main Authors: Gajović, L, Heesen, V, Brüggen, M, Edler, H. W, Adebahr, B, Pasini, T, de Gasperin, F, Basu, A, Weżgowiec, M, Horellou, C, Bomans, D. J, Dénes, H, Vohl, D
• Format: Journal Article
• Language: English
• Published: 12.02.2025
• Subjects: Physics - Astrophysics of Galaxies

In galaxies, the flattening of the spectrum at low radio frequencies below 300 MHz has been the subject of some debate. A turnover at low frequencies could be caused by multiple physical processes, which can yield new insights into the properties of the ionised gas in the interstellar medium. We inv...