http://arxiv.org/abs/1801.01190
The rapid neutron-capture process needed to build up many of the elements heavier than iron seems to take place primarily in neutron-star mergers, not supernova explosions.
A. Frebel and T. Beers
Mon, 8 Jan 18
44/117
Comments: published in Physics Today 71, 1, 30 (2018); article available at this https URL