SIGWfast: a python package for the computation of scalar-induced gravitational wave spectra

Understand

SIGWfast is a python code to compute the scalar-induced gravitational wave spectrum from a primordial scalar power spectrum that can be given in analytical or numerical form.

• SIGWfast was written with the aim of being easy to install and use, and to produce results fast, typically in a matter of a few seconds.
• To this end the code employs vectorization techniques within python, but there is also the option to compile a C++ module to perform the relevant integrations, further accelerating the computation.
• The python-only version should run on all platforms that support python 3.