A Universal Angular Momentum Profile for Dark Matter Halos

@article{Liao2016AUA,
  title={A Universal Angular Momentum Profile for Dark Matter Halos},
  author={Shihong Liao and Jianxiong Chen and Ming-chung Chu},
  journal={The Astrophysical Journal},
  year={2016},
  volume={844},
  pages={86}
}
The angular momentum distribution in dark matter haloes and galaxies is a key ingredient in understanding their formation. Especially, the internal distribution of angular momenta is closely related to the formation of disk galaxies. In this article, we use haloes identified from a high-resolution simulation, the Bolshoi simulation, to study the spatial distribution of specific angular momenta, $j(r,\theta)$. We show that by stacking haloes with similar masses to increase the signal-to-noise… Expand
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References

SHOWING 1-10 OF 50 REFERENCES
The Angular Momentum Distribution within Halos in Different Dark Matter Models
We study the angular momentum profile of dark matter halos for a statistical sample drawn from a set of high-resolution cosmological simulations of $256^3$ particles. Two typical Cold Dark MatterExpand
The Angular Momentum of Gas in Protogalaxies. I. Implications for the Formation of Disk Galaxies
We use numerical simulations of structure formation in a cold dark matter cosmology to compare the angular momentum distributions of dark matter and nonradiative gas in a large sample of halos. WeExpand
A Universal Angular Momentum Profile for Galactic Halos
We study the angular momentum profiles of a statistical sample of halos drawn from a high-resolution N-body simulation of the ΛCDM cosmology. We find that the cumulative mass distribution of specificExpand
THE ANGULAR MOMENTUM DISTRIBUTION OF GAS AND DARK MATTER IN GALACTIC HALOS
We report results of a series of nonradiative N-body/SPH simulations in a ΛCDM cosmology, designed to study the growth of angular momentum in galaxy systems. A sample of 41 halos of differing massExpand
CONNECTING ANGULAR MOMENTUM AND GALACTIC DYNAMICS: THE COMPLEX INTERPLAY BETWEEN SPIN, MASS, AND MORPHOLOGY
The evolution and distribution of the angular momentum of dark matter halos have been discussed in several studies over the last decades. In particular, the idea arose that angular momentumExpand
The angular momentum distribution within haloes in different dark matter models
We study the angular momentum profile of dark matter haloes for a statistical sample drawn from a set of high-resolution cosmological simulations of 256(3) particles. Two typical cold dark matterExpand
The angular momentum of cold dark matter haloes with and without baryons
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 ofExpand
The Structure of cold dark matter halos
High resolution N-body simulations show that the density profiles of dark matter halos formed in the standard CDM cosmogony can be fit accurately by scaling a simple “universal” profile. RegardlessExpand
The angular momentum content of dwarf galaxies: new challenges for the theory of galaxy formation
We compute the specific angular momentum distributions for a sample of low-mass disc galaxies observed by Swaters. We compare these distributions to those of dark matter haloes obtained by Bullock etExpand
Angular Momentum Distribution of Hot Gas and Implications for Disk Galaxy Formation
We study the angular momentum profiles both for dark matter and for gas within virialized halos using a statistical sample of halos drawn from cosmological hydrodynamics simulations. ThreeExpand
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