[ExI] Gravitational Waves Detected By LIGO!
Tomaz Kristan
protokol2020 at gmail.com
Sun Feb 14 07:52:24 UTC 2016
You may be right, The fact that LIGO is currently down can explain a lot.
But when it will go online again, we will see. If there will not be very
frequent detections, of a much greater events also, this one was a fluke.
For there is a constant rain of black holes onto those supermassives. Have
to be.
We will see.
On Sun, Feb 14, 2016 at 1:04 AM, John Clark <johnkclark at gmail.com> wrote:
> On Sat, Feb 13, 2016 Tomaz Kristan <protokol2020 at gmail.com> wrote:
>
> >
>> Those giant black holes, have swollen millions of black holes during past
>> 10 billion years.
>>
>> Each. And there are billion of them. Many such occurrences every year,
>> even every day.
>>
>> We do not detect those.
>>
>
> That is true; determining when the distance between two mirrors 2 and a
> half miles apart changes by 1/10,000 the width of a proton is hard.
>
>
>> >
>> Why?
>>
>
> Be patient
> . To the surprise of everybody LIGO detected the big signal and several
> smaller signals during a short engineering run when it was only at a third
> of it's design sensitivity. Until very recently the LIGO people were
> telling everybody that they didn't expect to see anything
> interesting
> until 2017 or 2018, and when they did find something they expected it
> would
> come from 2 neutron stars or a neutron
> star
> and a 8 or 9 mass black hole
> ,
> not from 36 and 29 mass black holes merging, but
>
> apparently
> such things and gravity waves in general are more common than had been
> thought.
>
> LIGO is shut down right now so it can be twerked to reach designed
> sensitivity but will come back online in late summer; that's about the same
> time the European Advanced VIRGO detector starts up and it might be even
> more sensitive. When that happens finding a new gravity wave event every
> day may not be unrealistic.
>
> John K Clark
>
>
>
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>
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