The angular momentum of cold dark matter haloes with and without baryons

Details The angular momentum of cold dark matter haloes with and without baryons The angular momentum of cold dark matter haloes with and without baryons

2009-06-16

arxiv.org/abs/0906.2785v2

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

21 pages, 27 figures. Accepted for publication in MNRAS (abstract shown here is slightly abridged). Replaced with accepted ver

Scientific paper

We investigate the magnitude and internal alignment of the angular momentum of cold dark matter haloes in simulations with and without baryons. We analyse the cumulative angular momentum profiles of hundreds of thousands of haloes in the Millennium simulation and in a smaller, but higher resolution, simulation, in total spanning 5 orders of magnitude in mass. For haloes of a given mass, the median specific angular momentum increases as j(

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