| Autor: |
Wen, Di, Kemball, Athol J., Saslaw, William C. |
| Rok vydání: |
2020 |
| Předmět: |
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| Zdroj: |
The Astrophysical Journal 890 (2020) 160 |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.3847/1538-4357/ab6d6f |
| Popis: |
We examine the counts-in-cells probability distribution functions that describe dark matter halos in the Dark Energy Universe Simulations (DEUS). We describe the measurements between redshifts $z=0$ to $z=4$ on both linear and non-linear scales. The best-fits of the gravitational quasi-equilibrium distribution (GQED), the negative binomial distribution (NBD), the Poisson-Lognormal distribution (PLN), and the Poisson-Lognormal distribution with a bias parameter (PLNB) are compared to simulations. The fits agree reasonably consistently over a range of redshifts and scales. To distinguish quintessence (RPCDM) and phantom ($w$CDM) dark energy from $\Lambda$ dark energy, we present a new method that compares the model parameters of the counts-in-cells probability distribution functions. We find that the mean and variance of the halo counts-in-cells on $2-25h^{-1}$Mpc scales between redshifts $0.65Comment: 24 pages, 15 figures, 1 table; submitted to ApJ |
| Databáze: |
arXiv |
| Externí odkaz: |
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