We describe some results obtained with N-MODY, a code for N-body simulations of collisionless stellar systems in modified Newto- nian dynamics (MOND). We found that a few fundamental dynamical processes are profoundly different in MOND and in Newtonian gravity with dark matter. In particular, violent relaxation, phase mixing and galaxy merging take significantly longer in MOND than in Newtonian gravity, while dynamical friction is more effective in a MOND system than in an equivalent Newtonian system with dark matter.
N-body simulations in modified Newtonian dynamics / C. Nipoti; P. Londrillo; L. Ciotti. - STAMPA. - 44:(2010), pp. 37-40. (Intervento presentato al convegno JENAM 2008: GRAND CHALLENGES IN COMPUTATIONAL ASTROPHYSICS tenutosi a Vienna nel September 8-12, 2008) [10.1051/eas/1044005].
N-body simulations in modified Newtonian dynamics
NIPOTI, CARLO;CIOTTI, LUCA
2010
Abstract
We describe some results obtained with N-MODY, a code for N-body simulations of collisionless stellar systems in modified Newto- nian dynamics (MOND). We found that a few fundamental dynamical processes are profoundly different in MOND and in Newtonian gravity with dark matter. In particular, violent relaxation, phase mixing and galaxy merging take significantly longer in MOND than in Newtonian gravity, while dynamical friction is more effective in a MOND system than in an equivalent Newtonian system with dark matter.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
