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arXiv · 0811.4490

A correlation between spin parameter and dark matter halo mass

Alexander Knebe·Chris Power
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Abstract

Using a set of high-resolution dark matter only cosmological simulations we found a correlation between the dark matter halo mass M and its spin parameter lambda for objects forming at redshifts z > 10: the spin parameter decreases with increasing mass. However, halos forming at later times do not exhibit such a strong correlation, in agreement with the findings of previous studies. While we presented such a correlation in a previous study using the Bullock et al. (2001) spin parameter defintion we now defer to the classical definition showing that the results are independent of the definition.

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Alexander Knebe, Chris Power. 2008-11-27. A correlation between spin parameter and dark matter halo mass. https://arxiv.org/abs/0811.4490

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