GREAT - General Relativistic Eigenmode Analysis Tool

A. Torres-Forné, P. Cerdá-Durán, A. Passamonti, M. Obergaulinger, J.A. Font

Introduction

This code computes the oscillation modes (eigenmodes) of a spherically symmetric self-gravitating object in general relativity. It has been developed to study the oscillation modes (p, g and f-modes) of proto-neutron stars formed in the collapse of the cores of massive stars. A detailed description of the equations implemented can be found at:

• Towards asteroseismology of core-collapse supernovae with gravitational-wave observations - I. Cowling approximation,
  Torres-Forné et al, MNRAS, 474, 5272 (2018)
• Towards asteroseismology of core-collapse supernovae with gravitational-wave observations - II. Spacetime perturbations,
  Torres-Forne et al, arxiv:1806.11366 (2018)

The code comes as a library, which should be called from a main code providing the data to be analyzed. Please read the README file coming with the code to learn about the details of how to use it.

Download

The latest version of the code can be found at the git repository in https://bitbucket.org/cerdupa/great/. Results in Torres-Forne et al 2018b were computed using version 1.0 of GREAT (tagged as v1.0).

LICENSE

GREAT is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. GREAT is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with GREAT. If not, see http://www.gnu.org/licenses/.