Jump to content


EP33 - Sunday, 17th January 2021 7:30pm GMT - Gravitational Wave Astronomy: A Descriptive, Non-Mathematical Talk by George Jones


Recommended Posts

This week another member @George Jones has kindly offer us to give us his talk 'Gravitational Wave Astronomy: A Descriptive, Non-Mathematical Talk'.

George is a physics Senior Lab Instructor at the University of Northern British Columbia in Canada, where he often gives public outreach talks and demonstrations. A childhood interest in space and astronomy led to his career in physics.

Gravitational waves, first observed in 2015, are produced when compact objects such as black holes and neutron stars merge. Just as useful astronomical information can be extracted from light wave signals, useful information about black holes, neutron stars, and cosmology can be extracted from gravitational wave signals.

Thank you George for offering to give us this talk, our first trans-continental talk! We look forwards to seeing you all there Sunday night.

Meeting details below:

Topic: EP33 - Sunday, 17th January 2021 7:30pm GMT - Gravitational Wave Astronomy: A Descriptive, Non-Mathematical Talk by George Jones
Time: Jan 17, 2021 07:30 PM London

Join Zoom Meeting

Meeting ID: 958 0536 4889
Passcode: 401233

  • Like 6
Link to comment
Share on other sites

Something I'd have asked @George Jones but only thought of it now - 

For a system of two supermassive objects rotating around each other, I can understand how G waves would emanate along the plane of rotation.  But I can't intuitively grasp how a massive object accelerating in a straight line would radiate G waves.  And if the changing position of the source of influence is the cause, why must the object accelerate rather than just move at uniform velocity?

Thanks again for an interesting presentation, George!



Link to comment
Share on other sites

It's because uniform motion is relative to another body where as proper acceleration is not. You can measure acceleration locally but not velocity as it requires another object.

If there were radiation with uniform motion it would violate the principles of relativity and in particular the fact that all inertial frames are equivalent. 

Regards Andrew 

Edited by andrew s
Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue. By using this site, you agree to our Terms of Use.