Gravitational Wave Background | Scientists use a living laboratories called pulsar timing arrays

[@johnjohnson7369]

Hank green sent me

[@ryankoppel-1608]

me too

[@Toowhitetohandle]

Me too

[@grilledcreamcheese]

Same haha now i'm looking forward to the 28th

[@LucasEmanuelRamosFernandes]

Same 😂

[@LordAngie]

yup, here we are😂

[@NielsLyhne123]

What these scientists are now capable of doing is simply astonishing. I am in awe at the creativity, precision, and persistence.

[@markholm7050]

Well written! A clear, concise description.

[@BrianFedirko]

The weird thing about the concept of gravity hum, is that of the forces gravity isn't polar. Gravity is a continual "infinite" (maybe) resolute force, and only objects in motions "pull" spacetime with oscilation, while the stationary pull. Pull isn't the correct term, but I don't know how to describe it otherwise as our knowledge in this respect is very little. There is obviously a background force due to gravity throughout the universe, while these larger oscillations move through stationary... I'm confusing myself as I try to describe the inherent problem with this physics concept. Gravity is the underlying largest force that can concentrate in the universe, and we've yet to properly perceive it or understand it. We need to continue with projects and thinking such as this if quantum physics and relativity are ever going to function well for us together in our understanding of the universe and everything around us. Gr8! Peace ☮💜Love

[@dyode1]

Excellent presentation - now I understand the (simplified) mechanism behind the recent confirmed detections. Many thanks!

[@caterinatiburzi3663]

It hasn't been confirmed yet. The signal from none of the PTAs has reached the 5-sigma significance that is needed to claim a real detection.

[@stevemyers9200]

This aged very well!

[@extropian314]

Holy smokes. I can't wait to hear more about this and the GW Background.

[@andresvargasch.8771]

Did you now, the last week?

[@jakemetzer5692]

I wonder if Tyler Childers "Universal Sound" is in reference to that background gravitational hum

[@KE-qu3ty]

I think 1:14 is incorrect! It detect smaller blackholes but not big ones! What am U missing here? I thought larger detection tools means more sensitivity needed for smaller blackholes! Not the opposite.

[@nelgbaz1]

You need larger detection tools to detect larger wave lengths of gravitational waves, supermassive black holes generate much larger wave lengths so you need more distance between the "arms". so thats why LIGO can only detect mergers of smaller black holes as they release shorter wave lengths. the distance the laser travels has to be around the length of the wave length.

[@KE-qu3ty]

@@nelgbaz1 Oh!!! thank you so much for explaining this.

[@EricLiconaWestSideWhenWeRide]

on June29th, will we know if scientists have discovered the pattern for this gravitational background hum?

[@Nomatternow]

Amazing!

[@footfault1941]

A perfect fairy tale to a total layman, me. "Dead" "living" .. stars? Oh, yes! A star is born, they say. It'll die some day if born. Logical.

[@sevisymphonie5666]

I once thought that satellites could be used to build an even bigger interferometer here. You would just have to know the position of satellites very precisely. But now this proposal to use pulsars, ... wow! It`s not an interferometer (if I understood it correctly) but it has no less accurate.

[@andresvargasch.8771]

LISA satellites will be used to detect mid-sized gravitational waves. LIGO for short ones and Pulsars for long ones.

[@GladBeastBoy]

Good grief what’s all the hub bub

[@mitch.pleasee]

Came here cuz of Hank Green

[@tajaunchristopher6590]

Came from tiktok

[@starryfolks]

Quantum computing

[@onemanmob6756]

This is such a beautiful and simple tool, compared to, e.g. LHC

[@AbellLincoln]

God Gave Noah the Rainbow Sign No More Water but Fire Next Time 🔥🙏🌈

[@snazzymcnazmy]

Ten kinds of nifty

[@inflivia]

I think it's misleading to say that 'ripples in spacetime' caused an effect on the LIGO apparatus. Interferometers do not have any components that could sense a 'ripple in spacetime'. At the base level, LIGO can not detect anything different from a regular seismograph - it simply detects the movement of atoms. That movement can be caused by many non-relativistic things, which is why LIGO had to spend decades learning how to filter out background noise. At the base sensor level, I don't think there is any difference between a local signal, or a remote signal, other than the direction that the signal came from.