Hands-on section at Universidad Andrés Bello

Here you can find the hands-on section exercises on cosmo$\mathcal{R}$ate held at Universidad Andrés Bello on August 6, 2024. Any comment is welcome.

Here, you can download the slides used during the seminar.

Installation

• To clone cosmo$\mathcal{R}$ate repository (~ 60 MB) launch in a terminal:

    git clone https://gitlab.com/Filippo.santoliquido/cosmo_rate_public.git
  

• move to the folder you just downloaded:

    cd cosmo_rate_public
  

• install the conda envirorment following the instruction found under Installation

• download cosmo$\mathcal{R}$ate userguide to learn how to use the code and interpret the output

• open Jupyter lab by launching in the terminal and in the folder cosmo_rate_public:

    jupyter lab
  

Exercise

The goal of this exercise is to make a plot of the merger rate density of binary black holes generated from Population III stars. We will change both the star formation rate and the initial conditions of the binary systems that generated these black holes. We will do that by modifying cosmo_params.py only.

We need to change the default value of the following variables:

• cb_class = ['BBH']
• Z_simulated = [1e-11] (You can comment and uncomment)
• formation_channel = 'popIII'
• sim = 'popIII/LOG1/'
• extension = '.dat'
• N_z_bins = 400
• zMAX = 40
• pop = 'III'
• SFRD_model = 'A-sloth_smooth_off'

Run cosmo$\mathcal{R}$ate by launching cosmo_rate_notebook.ipynb. You can do that by going to Kernel > Restart Kernel and Run all cells

Repeat this procedure for 'LAR1' with 'Jaacks', and for 'TOP5' with 'Skinner_smooth_off'.

Make a plot with these three different models of the merger rate density of Pop. III BBHs.