Comments on: Black Holes And Gravitons

By: Robert Crowley

Robert Crowley — Thu, 17 Aug 2017 01:09:30 +0000

I’ve read a few conflicting ideas about the potential nature of the Graviton. Your description of the Jupiter-sized detector orbiting a neutron star certainly emphasizes the difficulty in detection, but I’ve also read that the high-luminosity LHC upgrade could squeeze a few out to the point of detection. It would be a specific degradation signature of a heretofore unseen massless particle to specific decay products. I don’t recall, at this moment, exactly which particles the decay products would be, but the article posited that it be capable of producing them.
Of course, the current energy at which the collider is operating was supposed to be the threshold to produce sparticles.

By: Runkelstoss

Runkelstoss — Sat, 17 Jun 2017 22:45:55 +0000

The new black hole (GW170104) has nearly the double amount of entropy as the entropy of the initial holes added together.
Where does the additional entropy come from? From another angel, the information necessary to specify the resulting hole has nearly doubled. Why?

By: Gaurav Kumar

Gaurav Kumar — Sat, 17 Jun 2017 07:39:09 +0000

Good to know about that dispersion test for gravitational waves. Going to think beyond.

By: sjastro

sjastro — Sat, 10 Jun 2017 01:02:49 +0000

I wonder why LVT151012 is listed.
According to the data ( https://losc.ligo.org/events/LVT151012/ ) it has a significance of only 1.7 sigma.
What is the minimum sigma value for a gravitational wave to be announced as a discovery?

By: Wayne

Wayne — Fri, 09 Jun 2017 17:08:43 +0000

The added detail in your blog article on this subject is fascinating and really accessible the way you write it – thank you!

By: Priscilla

Priscilla — Fri, 09 Jun 2017 03:43:52 +0000

Thank you