The shape and dynamics of local attraction D. Strömbom, M. Siljestam, J. Park and D.J.T. Sumpter Eur. Phys. J. Special Topics, 224 17-18 (2015) 3311-3323 Published online: 15 December 2015 DOI: 10.1140/epjst/e2015-50082-8