To be or not to be: the case of the hot WHIM absorption in the blazar PKS 2155–304 sight line J. Nevalainen, E. Tempel, J. Ahoranta, L. J. Liivamägi, M. Bonamente, E. Tilton, J. Kaastra, T. Fang, P. Heinämäki, E. Saar and A. Finoguenov A&A, 621 (2019) A88 Published online: 14 January 2019 DOI: 10.1051/0004-6361/201833109