On Tuesday, April 9, 2019 at 7:33:01 AM UTC-5, John Clark wrote:
>
> LIGO has only been back on for a few days but already they have detected a 
> new gravitational wave from a Black Hole merger slightly under 5 billion 
> light years away.  They've decided to stop most of the secrecy and report 
> things as soon as they find them, so they haven't finished calculating how 
> massive they were yet. 
>
> Just after turning back on another wave found 
> <https://www.newscientist.com/article/2199107-ligo-has-spotted-another-gravitational-wave-just-after-turning-back-on/>
>
> John K Clark
>

Given the distance these may be pretty massive BHs.

https://www.newscientist.com/article/2199107-ligo-has-spotted-another-gravitational-wave-just-after-turning-back-on/

LC

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