![]() Here, we propose a new definition that is physically motivated, effectively unique, and parameter-free: ‘A dark matter halo is comprised of the collection of particles orbiting in their own self-generated potential’. ![]() ![]() Despite their importance – or perhaps because of it! – halo definitions continue to evolve towards more physically motivated criteria. Dark matter haloes have long been recognized as one of the fundamental building blocks of large-scale structure formation models. ![]()
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