J. Craig Wheeler

Let's talk about this rumor.

It was started by a tweet from astronomer J. Craig Wheeler about a LIGO detection with an optical counterpart.

Mm, optical counterpart means that there's a source of visible light associated with the gravitational wave, and in this case it's from the suspected galaxy that the wave came from.

But how do we locate the galaxy? After all, LIGO can only constrain the origin of its signals to a wide band across the sky.