Umbral chromospheric fine structure and umbral flashes modelled as one: The corrugated umbraVasco M. J. Henriques, Chris J. Nelson, Luc H. M. Rouppe van der Voort and Mihalis MathioudakisA&A, 642 (2020) A215DOI: https://doi.org/10.1051/0004-6361/202038538
