35 New Gravitational-Wave Events

Kavanagh
Kavanagh
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Topic 226397
QuantumHelos
QuantumHelos
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"A Gravitating Topic" 35

"A Gravitating Topic"

35 waves bravo!

 

https://bit.ly/DJ_EQ

Mike Hewson
Mike Hewson
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What a strange collection of

What a strange collection of phenomena these waveforms reveal. I am amazed by how much can be said via careful analysis. This is magnificent work, with the detectors working ever closer to their design/quantum limit. There will be more good detections to come. Now, if only they would reveal continuous waves ..... :-)

BTW : When it is mentioned that an object's spin is 'upright' or 'upside-down', I think that is by comparison to a pair's orbital angular momentum vector.

Cheers, Mike.

( edit ) From the paper itself : "... A non-zero χeff indicates the definite presence of spins in the system, with positive values indicating that there is a net spin aligned with the orbital angular momentum, and negative values indicating that there is a net spin anti-aligned with the orbital angular momentum. ..."

( edit ) One of the analyses speaks of the tidal deformation of neutron stars : "If a binary contains at least one NS component, the GW signal from the inspiral is influenced by the deformability of NS matter.". Just imagine the gravitational field strength required to do that !

I have made this letter longer than usual because I lack the time to make it shorter ...

... and my other CPU is a Ryzen 5950X :-) Blaise Pascal

Mike Hewson
Mike Hewson
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The poster of events looks

The poster of events looks good :

... in each case the sum of the initial components does not equal the final mass : ( most of ) the difference is converted to energy of the outgoing gravitational waves, that being measured in solar masses. What an epic amount one solar mass of energy is, as per E = mc2 ! Spacetime is so 'stiff' that it takes quite a bit to cause a measurable wave.

Cheers, Mike.

I have made this letter longer than usual because I lack the time to make it shorter ...

... and my other CPU is a Ryzen 5950X :-) Blaise Pascal

rbpeake
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For gravity to be so weak

For gravity to be so weak compared with the other forces, and then to see it with such overwhelming strength is amazing.

 

GWGeorge007
GWGeorge007
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Mike Hewson wrote: The

Mike Hewson wrote:

The poster of events looks good :

... in each case the sum of the initial components does not equal the final mass : ( most of ) the difference is converted to energy of the outgoing gravitational waves, that being measured in solar masses. What an epic amount one solar mass of energy is, as per E = mc2 ! Spacetime is so 'stiff' that it takes quite a bit to cause a measurable wave.

Cheers, Mike.

What is the image type you are using?  I can't read/see it.

George

A proud member of the O.F.A. (Old Farts Association)

Mike Hewson
Mike Hewson
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It's a *.jpg which you can

It's a *.jpg which you can open/save using the viewer of your choice and then see the detail.

Cheers, Mike.

I have made this letter longer than usual because I lack the time to make it shorter ...

... and my other CPU is a Ryzen 5950X :-) Blaise Pascal

Mike Hewson
Mike Hewson
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Yep. Gravity only has one

Yep. Gravity only has one 'charge' ie. it always attracts, so if you get enough stuff it overwhelms the other forces and forms black holes.

{ Well I say it always attracts, but then there's that confusing business with dark energy ...... that I really can't grasp ! }

Cheers, Mike.

I have made this letter longer than usual because I lack the time to make it shorter ...

... and my other CPU is a Ryzen 5950X :-) Blaise Pascal

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