The LIGO team's analysis suggests these
spins were misaligned, indicating that the pair of black holes might not always have been together
in a tight
binary system but, rather, randomly came together over time.
«Several interpretations of the nature of this
system have been proposed, from an isolated slowly
spinning magnetar with a substantial fossil - disk, to a young low mass X-ray
binary system, or even a
binary magnetar, but none of them is straightforward, nor can they explain the overall observational properties,» researchers said
in a study, published
in the Sept. 2, 2016, issue of The Astrophysical Journal Letters.
The prize was given for his discovery of the first «
binary pulsar» - a celestial
system in which two pulsars (rapidly
spinning neutron stars) orbit each other.