Stirring N-body systems: Universality of end states

Jeremy A. Barber, Hongsheng Zhao, Xufen Wu, Steen hansen

Research output: Contribution to journalArticlepeer-review

Abstract

We study the evolution of the phase-space of collisionless N-body systems under repeated stirrings or perturbations. We find convergence towards a limited solution group, in accordance with Hansen 2010, that is independent of the initial system and environmental conditions, paying particular attention to the assumed gravitational paradigm (Newtonian and MOND). We examine the effects of changes to the perturbation scheme and in doing so identify a large group of perturbations featuring radial orbit instability (ROI) which always lead to convergence. The attractor is thus found to be a robust and reproducible effect under a variety of circumstances.
Original languageEnglish
JournalMonthly Notices of the Royal Astronomical Society
Volume424
Issue number3
DOIs
Publication statusPublished - 11 Aug 2012

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