Read the Beforeitsnews.com story here. Advertise at Before It's News here.
Profile image
By Universe Today (Reporter)
Contributor profile | More stories
Story Views
Now:
Last hour:
Last 24 hours:
Total:

Gravitational-Wave Detector Could Sense Merging Primordial Black Holes With the Mass of a Planet, Millions of Light-Years Away

% of readers think this story is Fact. Add your two cents.


Gravitational-wave detectors have been a part of astronomy for several years now, and they’ve given us a wealth of information about black holes and what happens when they merge. Gravitational-wave astronomy is still in its infancy, and we are still very limited in the type of gravitational waves we can observe. But that could change soon.

Current gravitational wave observatories are sensitive to the mergers stellar-mass black holes. We’ve observed a few mergers involving neutron stars, but most have been between black holes on the order of tens of solar masses. We can’t yet observe the gravitational waves of supermassive black holes in other galaxies, nor can we observe those of planet-sized worlds. Proposed detectors such as eLISA will allow us to observe the former, but it will take a novel new idea to detect the latter.


The sensitivity of various gravitational wave detectors. Credit: Christopher Moore, Robert Cole and Christopher Berry

The problem with observing gravitational waves from planet-mass bodies is that they are both very faint and very high frequency. Our current designs that use laser interferometry make these waves difficult to observe. The gravitational waves we can observe are already so faint that they are barely above the level of background noise. But recently a team has proposed a gravitational wave detector using resonance rather than lasers.

The idea of using resonance to detect gravitational waves isn’t new. Back in the 1960s Joseph Weber tried detecting them using a large aluminum cylinder. As gravitational waves passed through the cylinder their squeezing and pulling would cause the cylinder to ring at a particular frequency. Weber hoped that the ringing caused by gravitational waves would be stronger than those caused by background noise and heat. But Weber’s experiment failed, which led astronomers to pursue other methods such as the laser interferometry method we use now.


Joseph Weber and one of his gravitational wave detectors. Credit: Special Collections and University Archives, University of Maryland Libraries

This new design takes a similar approach to Weber but leverages modern technology. One of the limitations of Weber’s design was that he had to use piezoelectric sensors to measure the vibration of the cylinder, which limited the sensitivity of his experiment. So instead the team proposes using a hollow cylinder placed in a strong magnetic field. As gravitational waves pass through the cylinder, they should induce electromagnetic waves in the cylinder, which we could detect. Based on their design, the team thinks they should be able to detect very faint gravitational waves.

Perhaps the most interesting aspect of the idea is that the detector would be sensitive to high-frequency gravitational waves, such as those that would be produced by merging primordial black holes. Primordial black holes are hypothetical objects about the size of a tennis ball that would have been formed in the earliest moments of the universe. If they exist, they might explain things such as dark matter. And this new detector would be perfect for finding them.

Overall this new design is a bit speculative, and it’s still just in the design stage. The team will have to build one to see if it works, and it remains to be seen whether they will be able to distinguish between the signal and the noise. But if they succeed it could tell us about black holes, dark matter, and beyond.

Reference: Herman, Nicolas, et al. “Detecting Planetary-mass Primordial Black Holes with Resonant Electromagnetic Gravitational Wave Detectors.” arXiv preprint arXiv:2012.12189 (2020).

The post Gravitational-Wave Detector Could Sense Merging Primordial Black Holes With the Mass of a Planet, Millions of Light-Years Away appeared first on Universe Today.



Source: https://www.universetoday.com/151646/gravitational-wave-detector-could-sense-merging-primordial-black-holes-with-the-mass-of-a-planet-millions-of-light-years-away/


Before It’s News® is a community of individuals who report on what’s going on around them, from all around the world.

Anyone can join.
Anyone can contribute.
Anyone can become informed about their world.

"United We Stand" Click Here To Create Your Personal Citizen Journalist Account Today, Be Sure To Invite Your Friends.

Please Help Support BeforeitsNews by trying our Natural Health Products below!


Order by Phone at 888-809-8385 or online at https://mitocopper.com M - F 9am to 5pm EST

Order by Phone at 888-388-7003 or online at https://www.herbanomic.com M - F 9am to 5pm EST

Order by Phone at 888-388-7003 or online at https://www.herbanomics.com M - F 9am to 5pm EST


Humic & Fulvic Trace Minerals Complex - Nature's most important supplement! Vivid Dreams again!

HNEX HydroNano EXtracellular Water - Improve immune system health and reduce inflammation

Ultimate Clinical Potency Curcumin - Natural pain relief, reduce inflammation and so much more.

MitoCopper - Bioavailable Copper destroys pathogens and gives you more energy. (See Blood Video)
Oxy Powder - Natural Colon Cleanser!  Cleans out toxic buildup with oxygen! 
Nascent Iodine - Promotes detoxification, mental focus and thyroid health.
Smart Meter Cover -  Reduces Smart Meter radiation by 96%!  (See Video)

Immusist Beverage Concentrate - Proprietary blend, formulated to reduce inflammation while hydrating and oxygenating the cells.

Report abuse
Loading...

    Comments

    Your Comments
    Question   Razz  Sad   Evil  Exclaim  Smile  Redface  Biggrin  Surprised  Eek   Confused   Cool  LOL   Mad   Twisted  Rolleyes   Wink  Idea  Arrow  Neutral  Cry   Mr. Green

    MOST RECENT
    Load more ...

    SignUp

    Login

    Newsletter

    Email this story
    Email this story

    If you really want to ban this commenter, please write down the reason:

    If you really want to disable all recommended stories, click on OK button. After that, you will be redirect to your options page.