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MHF: MLAPM Halo Finder

Posted: Thu Nov 12, 2015 7:34 am
by Ada Coda
MHF: MLAPM Halo Finder

Abstract: MHF is a Dark Matter halo finder that is based on the refinement grids of MLAPM. The grid structure of MLAPM adaptively refines around high-density regions with an automated refinement algorithm, thus naturally "surrounding" the Dark Matter halos, as they are simply manifestations of over-densities within (and exterior) to the underlying host halo. Using this grid structure, MHF restructures the hierarchy of nested isolated MLAPM grids into a "grid tree". The densest cell in the end of a tree branch marks center of a prospective Dark Matter halo. All gravitationally bound particles about this center are collected to obtain the final halo catalog. MHF automatically finds halos within halos within halos.

Credit: Gill, Stuart P. D.; Knebe, Alexander


Bibcode: 2015ascl.soft11007G

ID: ascl:1511.007