Hard X-rays from the deep solar atmosphere - An unusual UV burst with flare properties L. P. Chitta, I. G. Hannah, L. Fletcher, H. S. Hudson, P. R. Young, S. Krucker and H. Peter A&A, 688 (2024) L9 Published online: 01 August 2024 DOI: 10.1051/0004-6361/202450866