Machine learning modelling of the gravitational waves generated by black-hole binaries


Keywords
datanalysis, gravitational-waves, machine-learning
License
Other
Install
pip install mlgw==2.0.3

Documentation

MLGW

MLGW is a Machine Learning model to compute the gravitational waves generated by a Binary Black Hole coalescence. It is part of a thesis project at Università di Pisa under the supervision of prof. Walter Del Pozzo. The model is released as a Python package mlgw in the PyPI repository: https://pypi.org/project/mlgw/. You can install the package with pip install mlgw The model outputs the waveform when given the two BHs masses and spins. It implements also the dependence of the waveform on the observer position. Basic usage is as follows:

import mlgw.GW_generator as generator
generator = generator.GW_generator() #creating an istance of the generator
theta = np.array([20,10,0.5,-0.3, 1.43, 1.3, 2.3]) #list of physical parameters [m1,m2,s1,s2, d_L, iota, phi]
times = np.linspace(-8,0.02, 100000) #time grid at which waves shall be evaluated
h_p, h_c = generator.get_WF(theta, times) #returns amplitude and phase of the wave

You can read much more details about the model in the thesis.

Content of the repository

The repository is organised in the following folders:

  • routines: it holds the core of the project. Every interesting code developed (including also attempts no added to the final release) is kept here.
  • tries: it stores all the code used to validate the models in routines. The code there is not updated and might not work properly.
  • MLGW_checks: it holds some test performed on the definitive code, to ensure that there are no bugs.
  • definitive_code: it holds severeal fitted models as well as a small script to check the accuracy of the models stored.
  • MLGW_package: it holds code relevant to the package mlgw.

For more information, you can contact me at stefanoschmidt1995@gmail.com