During its first 4 months of taking data, Advanced LIGO has detected gravitational waves from two binary black hole mergers, GW150914 and GW151226, along with the statistically less significant binary black hole merger candidate LVT151012. We use our rapid binary population synthesis code COMPAS to show that all three events can be explained by a single evolutionary channel -- classical isolated binary evolution via mass transfer including a common envelope phase. We show all three events could have formed in low-metallicity environments (Z = 0.001) from progenitor binaries with typical total masses ≳160M⊙, ≳60M⊙ and ≳90M⊙, for GW150914, GW151226, and LVT151012, respectively.
@article{arxiv.1704.01352,
title = {Formation of the first three gravitational-wave observations through isolated binary evolution},
author = {Simon Stevenson and Alejandro Vigna-Gómez and Ilya Mandel and Jim W. Barrett and Coenraad J. Neijssel and David Perkins and Selma E. de Mink},
journal= {arXiv preprint arXiv:1704.01352},
year = {2017}
}