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# Simulations with variable OmegaMatter 
- Authors:  Andrés Nicolás Ruiz
- Contact: andres.ruiz@unc.edu.ar
- Pub-Date: 2024
- Last modification: 2024


## Description

17 pairs (A+B) of simulations with different values of  $\Omega_{M}$  &Omega; . Simulations have $512^3$ dark-matter particles in a comoving cubic volume of $500h^{-1}$Mpc on a side. 
Values of $\Omega_{M}$ range from $0.10$ to $0.50$, equally sampled in intervals of $0.025$. 
Simulations were run with Gadget-4 [1], using power spectra generated with CAMB [2]. In all cases we use 
fixed comological parameter for $\Omega_b = 0.05$, $h=0.67$, $\sigma_8 = 0.81$, $n=0.96$ and 
$\Omega_{\Lambda} = 1 - $\Omega_M$. The A+B pair follows the paired-fixed approach to suppress cosmic variance [3].


## Data available

Snapshot at $z=0$ and Rockstar [4] halo catalogues (ascii and binary)

## References
<ul>
<li> [1] Springel V., Pakmor R., Zier O. & Reinecke M., 2021, MNRAS, 506, 2871 (https://wwwmpa.mpa-garching.mpg.de/gadget4/) </li>
<li> [2] Lewis A., Challinor A. & Lasenby A., 2000, ApJ, 538, 473 (https://camb.readthedocs.io/en/latest/) </li>
<li> [3] Angulo R. E. & Pontzen A., 2016, MNRAS, 462, L1. </li>
<li> [4] Behroozi P. S., Wechsler R. H. & Wu H.-Y., 2013, ApJ, 762, 109 (https://bitbucket.org/gfcstanford/rockstar/src/main/) </li>
</ul>

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