https://www.forbes.com/sites/briankober ... its-cause/
A Fast Radio Burst 500 Million Light Years Away Is Repeating - Forbes Feb 11
Every 16.35 days
“One idea is that it is due to the orbital period of a binary system, such as a neutron star orbiting a young OB star. OB stars are massive and highly energetic. Neutron stars are dense and have strong magnetic fields. A close binary of the two could create a beam of high energy radio light.”
More from the original paper here:
Amiri, M., et al. “Periodic activity from a fast radio burst source.” *arXiv preprint* arXiv:2001.10275 (2020).