Thursday, 16 November 2017

The Election Day Event

Today the LIGO and Virgo collaborations made their sixth announcement of a confirmed gravitational-wave detection. Once again the signal was from two black holes colliding — this time the black holes were each close to 10 times the mass of the sun, with the smaller object possibly as low as 5 solar masses, making this likely the lowest-mass binary-black-hole yet observed.