How Pulsars Reveal the Deepest Gravitational Wave Mysteries

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Күн бұрын

The Gravitational Wave Background is a signal older that the Cosmic Microwave Background that may help us understand how the Universe was created. The International Pulsar Timing Array is a global collaboration to detect and characterize the low-frequency gravitational waves by measuring the radio emission of millisecond pulsars thousands of lightyears away.
0:00 Measuring the lowest frequency Gravitational Waves in the Universe
1:25 What are gravitational waves?
4:08 The International Pulsar Timing Array
7:57 Humanities Most Difficult Experiment
10:34 The International Pulsar Timing Array second data release
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Пікірлер: 27

Science Discussed 2 ай бұрын

This is a really cool project. I am very excited to see their results with a better confidence interval. Nice coverage of the topic.

Dr Ben Miles 2 ай бұрын

Hey, yeah, its something that's flown under the radar for me. Shame its so many years between data releases

Science Discussed 2 ай бұрын

@Dr Ben Miles haha yeah the problem with experiments like this.

Junk Mail Ай бұрын

So, Ben, Is it possible that orbiting black holes (over great distances) may express syncopation between them the way the orbits of our 8-9 planets have become harmonically related, so each binary black hole tends to become harmonically related to others.

Johnny Morris 2 ай бұрын

Neutron stars are the most interesting and amazing object in the universe to me -please cover them more often ❤

Zachary Weller 2 ай бұрын

Another fantastic video, thanks Doc!

Raven Ragnar 2 ай бұрын

Good video. If successful, the detection of low-frequency gravitational waves by the IPTA could provide important insights into the nature of black holes and other astrophysical phenomena, as well as confirming one of the last remaining predictions of Einstein's theory of general relativity. Science, it works.

Photon434 2 ай бұрын

Another great video. Your presentation skills are the💣

Dr Ben Miles 2 ай бұрын

Thanks!

Surkew Rasoul 2 ай бұрын

I think if we get four to five more years and so many other scientists , We might just be able to find out what's out there, Hopefully it won't the mere construct of our own dream walking and imagination and we can actually succeed at it.😂

pukulu 2 сағат бұрын

Objects (mostly atomic nuclei, protons and neutrons) on the surface of a rapidly rotating neutron star are going a substantial fraction of the speed of light just due to their presence on the neutron star. It's hard to imagine such an extreme object. Many of those who are rotating more than 100 times per second must be considerably flattened along the plane of rotation. They must be a relatively thin disc, not round at all.

Wit Wisniewski Ай бұрын

What about weaker but closer sources? If we are receiving gravitational waves from giant objects undergoing extreme events, but at enormous distance, then should we not be able to pick up waves from smaller sources nearby. We have objects within a few light years with orbit periods of just a few days. Does our own Moon orbiting Earth generate gravitational waves that we could pick up?

OneAboveAll Ferrari fan 2 ай бұрын

So the wave distorts time of these pulsars?

Dr Ben Miles 2 ай бұрын

It distorts the position of the pulsars, as they are moved closer or further away from Earth, this affects the arrival time of their pulses. Making it look like they are speeding up or slowing down.

SoosV 2 ай бұрын

It amazes me that the fact that LIGO uses the difference between one being affected by gravity and the other not being affected by gravity to see gravity waves. It amazes me that either mas or light isn't affected by gravity and LIGO proves it. It amazes me that the greatest minds in the world are just so clueless to such a simple proof.

Bryan Draughn 2 ай бұрын

It's orthogonal oscillation.

SoosV 2 ай бұрын

@Bryan Draughn You can orthogonal all you want, it either affects both or it doesn't.

yourgu4rd 2 ай бұрын

@SoosV your premise is wrong. Its a contraction only in one direction.

SoosV 2 ай бұрын

@yourgu4rd Going to Einstein's relativity and more exactly, the gravity well. This being the basis of gravity bending light. My point is that of what is being contracted. I am of the opinion that the mass of the mirror is being pulled back and forth by the gravitational fluctuations and not space being expanded and contracting. Light in this case would maintain the same speed relative to both arms since even if time is dilated in fluctuating gravity, each arm is virtually in the same amount of gravitational change since the light pulse is faster than the oscillation of the mirror. And now that I have put this in words, I can say you are absolutely correct. my premise is flawed.

yourgu4rd 2 ай бұрын

@SoosV I'm thinking, that if the mirrors would be just pulled back and forth, you wouldnt need long arms ;)

Surkew Rasoul 2 ай бұрын

Jesus christ , People are clever 🥴

J H 2 ай бұрын

Ah, nice.

Robert Nelson 2 ай бұрын

poin-ca-ray

Eric Ephemetherson 2 ай бұрын

Now humankind should start working on a detector that will detect time. This space-time crap is not coherent in explanations as we don't have a definition of time nor did we ever detect time. Therefore, it preposterous to use ''time'' in mathematical equations as we don't even know what time is. So, a contraprion to detect time would help a lot in further discoveries in physics and astro-physics.