Hot gas in Mach cones around Virgo cluster spiral galaxies M. Weżgowiec, B. Vollmer, M. Ehle, R.-J. Dettmar, D. J. Bomans, K. T. Chyży, M. Urbanik and M. Soida A&A, 531 (2011) A44 Published online: 09 June 2011 DOI: 10.1051/0004-6361/201016344