Dramatic change in the boundary layer in the symbiotic recurrent nova T Coronae Borealis G. J. M. Luna, K. Mukai, J. L. Sokoloski, T. Nelson, P. Kuin, A. Segreto, G. Cusumano, M. Jaque Arancibia and N. E. Nuñez A&A, 619 (2018) A61 Published online: 08 November 2018 DOI: 10.1051/0004-6361/201833747