Suppression of convection around small magnetic concentrations S. Morinaga, T. Sakurai, K. Ichimoto, T. Yokoyama, M. Shimojo and Y. Katsukawa A&A, 481 1 (2008) L29-L32 Published online: 25 January 2008 DOI: 10.1051/0004-6361:20079029