Reply to post: Re: Step 1 done - No

Boffins' gravitational wave detection hat trick blows open astronomy

Charles 9 Silver badge

Re: Step 1 done - No

"Four detectors are really needed unless each Ligo itself can give some information on the diretcion of the wave."

They may just be able to give an insight on direction because each LIGO structure is two-dimensional (the L-shape mentioned). Plus we don't know how each LIGO structure is oriented relative to each other, which could help in terms of orientation of the detected wave.

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