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Are Axions Dark Matter?

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What does the strong nuclear force, the fundamental symmetries of nature, and a laundry detergent have in common? They’re all important parts of the tale of the axion - a tale whose end may take us beyond the standard model and solve one of the most vexing mysteries in astrophysics.
Hosted by Matt O'Dowd
Written by Matt O'Dowd & Graeme Gossel
Graphics by Leonardo Scholzer & Adriano Leal
Post Production: Yago Ballarini, Max Willians, Pedro Osinski
Directed by: Andrew Kornhaber
Executive Producers: Eric Brown & Andrew Kornhaber
The story of the axion is a classic physics tale: intrepid scientists delve deep into trackless mathematics in search of answers to a mystery. And there, against all expectations, they find the hint of a completely new and unexpected denizen of the natural world. In this case the mystery was a subtle inconsistency in the behavior of the fundamental forces. And the unexpected discovery? A brand new particle - the axion - which, while not proven to exist, may explain a much more famous conundrum. The axion may explain dark matter.
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Commentaires 80
Adam Tideman
Adam Tideman Il y a 6 heures
I understood like 5% of everything you said. Who are these videos for exactly? I've tried to watch some of PBS space times videos but I can never manage to stay focused for more than a minute, it's just too hard to follow.
Nishant Arora
Nishant Arora Il y a 2 jours
Theoretically is there a difference between Neutrinos & Axioms?
Tom St Denis
Tom St Denis Il y a 2 jours
won't lie. I only watch your videos when I think I'm getting too full of myself. I'm sure your videos are well made but I have no idea what you're talking about. :-)
Priyansh Gaurav
Priyansh Gaurav Il y a 2 jours
Its weird how I understood 95% of the words he used but barely a sentence.
fulmarmusic
fulmarmusic Il y a 3 jours
Is it possible that space-time bends matter to matter and matter bends space-time, so there is no need for gravity?
Herpiderpia Games
Herpiderpia Games Il y a 4 jours
So the sun is a dark matter generator?
FLAT EARTH
FLAT EARTH Il y a 5 jours
THIS MIGHT BE A BIT OFF TOPIC BUT .. frvid.com/video/vid%C3%A9o-_q32YJtOJ5Q.html
Democrats killed America and I stood by & watched
Did you know, dark matter is made of axioms? No, as sure as day follows night, you meant...axioN's.
FLAT EARTH
FLAT EARTH Il y a 5 jours
THIS MIGHT BE A BIT OFF TOPIC BUT .. frvid.com/video/vid%C3%A9o-_q32YJtOJ5Q.html
Louis Anthes
Louis Anthes Il y a 8 jours
Of course, that raises the question: why was axion detergent named "axion"?
Van Nike
Van Nike Il y a 10 jours
Sorry this has nothing to do with this subject.. I want to talk about creating true A.I.. We haven't even solve the moral problems let alone program it.
Dom Verdi
Dom Verdi Il y a 11 jours
CHANDRA COULD NOT FIND THE AXIONS PREDICTED BY THE STRING "THEORY" PHILOSOPHY. frvid.com/video/vid%C3%A9o-b0frFho7eds.html
FLAT EARTH
FLAT EARTH Il y a 5 jours
THIS MIGHT BE A BIT OFF TOPIC BUT .. frvid.com/video/vid%C3%A9o-_q32YJtOJ5Q.html
Ivy
Ivy Il y a 12 jours
Why This insistence of particle physicists that Dark (invisible) matter must be made of particles? Just like when String Theorists had to fight to stay in business. I think we need a new theory of Quantum Gravity coupled with the Holographic Principle. Information of the Invisible matter might be encoded at the Boundary of our Universe and even leaked into ours from a Neighbor Universe.
Gareth Quigley
Gareth Quigley Il y a 12 jours
So we figured out dark matter 100 years ago. Antimatter is dark matter, dark matter causes positive curvature of spacetime, increases time dialation and in effect... antigravity, antigravity or (dark energy) stops the universe from collapsing in itself. Antigravity = Dark Energy = Lamda(cosmological Variable) = Antimatter density. Physics is fixed.
CDX ALLASONE
CDX ALLASONE Il y a 13 jours
In an infinite universe, where everything is possible, then there is a possibility that some things are not possible
FLAT EARTH
FLAT EARTH Il y a 5 jours
THIS MIGHT BE A BIT OFF TOPIC BUT .. frvid.com/video/vid%C3%A9o-_q32YJtOJ5Q.html
Will Dale
Will Dale Il y a 14 jours
Some models of SST also require Axions. I read today (space .com) that a recent experiment using the Chandra X-ray space telescope probing the Perseus Galaxy Cluster apparently have not found evidence of Axions (David Marsh, co-author of the study from Stockholm University in Sweden). "Our research doesn't rule out the existence of these particles, but it definitely doesn't help their [string models] case," Helen Russell, co-author of the study from the University of Nottingham in the UK.
ZappBrannigan23
ZappBrannigan23 Il y a 14 jours
As soon as we find out what dark matter is and how to manage it, I'm going to use dark matter to make a perpetual motion machine / engine. #howhardcanitbe
Pablo Pineda
Pablo Pineda Il y a 15 jours
Does it interact to static electricity
Rex Galilae
Rex Galilae Il y a 15 jours
9:33 Wait. I thought the whole point was to avoid using human made magnets
arturo1990
arturo1990 Il y a 15 jours
Once you have memorized what Axions are, re-upload the video again.. you’re trying “too” hard reading the script and acting at the same time.
Thinkbolt
Thinkbolt Il y a 17 jours
Too long. And boring.
Hal Marsh
Hal Marsh Il y a 18 jours
dude dressed like a bum with hand gestures that add nothing to the speech, cant watch this
Riko J. Amado
Riko J. Amado Il y a 18 jours
Mr. Matt here is the Thor of Physics.
Kian Curatolo
Kian Curatolo Il y a 21 jour
Assuming they do end up being dark matter, I wonder if due to just how much of it there is if there'd ever be a way to farm it for energy. Using natural Magnets produced by major features to convert large amounts into photons to turn into usable energy. probably too much trouble than its worth especially compared to other things that could be done at that stage of development. Just an idea.
FLAT EARTH
FLAT EARTH Il y a 5 jours
I AGREE WITH YOU BUT THIS MIGHT BE A BIT OFF TOPIC BUT .. frvid.com/video/vid%C3%A9o-_q32YJtOJ5Q.html
C Christensen
C Christensen Il y a 22 jours
Detail oriented!?😁 Newton's principals of mathematical philosophy isn't produced that way in latin 😂 All right Matt, you may be right about us. I love how I see construction but never hateful criticism with this channel, it's a testament to it's objectivity I think
Robeon Mew
Robeon Mew Il y a 23 jours
We are so close to meeting the oneness 🌹
FLAT EARTH
FLAT EARTH Il y a 5 jours
I AGREE WITH YOU BUT THIS MIGHT BE A BIT OFF TOPIC BUT .. frvid.com/video/vid%C3%A9o-_q32YJtOJ5Q.html
Nondescript
Nondescript Il y a 26 jours
If I've learned anything about FRvid, it's: If the title asks a profound question, the answer will always amount to, "We don't know"
The Bald Eagle
The Bald Eagle Il y a 27 jours
Just lightly nerding
FLAT EARTH
FLAT EARTH Il y a 5 jours
I AGREE WITH YOU BUT THIS MIGHT BE A BIT OFF TOPIC BUT .. frvid.com/video/vid%C3%A9o-_q32YJtOJ5Q.html
kapil vajpayee
kapil vajpayee Il y a 27 jours
Wow,it is so hard to understand . Btw i dont know what is going on
Ana Caballero
Ana Caballero Il y a 27 jours
Vacuum 💛
Seven
Seven Il y a 28 jours
No they are not Dark Energy and Dark Matter are the life force of the universe is the KA an BA or known as the spirt an soul similar to our own spirt an soul we know of there existence yet we can never measure it.
FLAT EARTH
FLAT EARTH Il y a 5 jours
I AGREE WITH YOU BUT THIS MIGHT BE A BIT OFF TOPIC BUT .. frvid.com/video/vid%C3%A9o-_q32YJtOJ5Q.html
Tomatoffel
Tomatoffel Il y a 28 jours
I would be interested if we could look at a magnetar fly through a dark matter field and see if it converts Axions to light. How much light would we get? Would it be enough to be detectable with equipment as of right now?
Stefanos Papadopoulos
Stefanos Papadopoulos Il y a 29 jours
Once dark matter is figured out...there will be a discovery of new particles.
Waroon H
Waroon H Il y a mois
Axion is actually ... a normal light source ( it easy , simple and nobody think in this way before and nobody can answer what is the light source anyway) , .. so Axions is everywhere.
Gregorii Katastrov
Gregorii Katastrov Il y a mois
"W" in Wilczek you should've pronounced as "V" (like in "View") and it mean puppy-wolf in Polish (don't know if Frank is Pole, but i'm pretty sure, he at least had polish ancestors). Sorry, couldn't stop myself - it was first time i felt competent enough to correct you. Great job on what you are doing.
Francis
Francis Il y a mois
Does this so-called dark matter even exist? Probably not
The Internet Dinosaur:
;Love this channel so much, i am always nerding out on this! :)
Ryan
Ryan Il y a mois
love the videos but what's with the low frame rate?
Logesh K
Logesh K Il y a mois
If axions have mass then how can they be interconverted into photons....??? Please explain (since photons have no mass)
Joye Colbeck
Joye Colbeck Il y a mois
A weakly interacting small particle - a WISP?
Astromations
Astromations Il y a mois
Yes. Yes they are!
Ricardo González
Ricardo González Il y a mois
Great video!
Zepha21
Zepha21 Il y a mois
Are humans great apes?
Maap
Maap Il y a mois
Mediocre apes
ED_DY TV
ED_DY TV Il y a mois
Traduction arab plz💕
M W
M W Il y a mois
Did he do a 5 minute commercial for NORD VPN?
Daniel Coker
Daniel Coker Il y a mois
Its data, not data.
R0GER R0GER GAMING
R0GER R0GER GAMING Il y a mois
I did comment that it was a chimp.
So ein Spast
So ein Spast Il y a mois
I really like the Tekken 5 main menu music
James Black
James Black Il y a mois
Watching you move I think your camera's exposure time is too small.
Verners Lejietis
Verners Lejietis Il y a mois
Wow! Even though, the Consiousness influencing QM video is more to my liking, I am glad I did not miss this one. I went in it without a clue what an Axion is, but your explanation with the graphics was top notch. If only i was a kid way back in school, your content is really inspirational.
CleverWire
CleverWire Il y a mois
In an infinite sized universe bag (for lack of a better sciency word) that contains infinitely sized universes where the bag's existence expanded infinite time wouldn't the probability this text message be typed already in the past by an identical me be 100%?
pvc
pvc Il y a mois
"CP Violation" Attention, ground units - anti-citizen reported in this community. Code: lock, cauterize, stabilize.
Brenden Carr
Brenden Carr Il y a mois
3:36 okay wow, the strong CP problem really sounds like the intersection in which we need to keep a very close eye on. Our error, our missing connection, lies somewhere in the maths which cause this mismatch. I absolutely love it! I almost want to go to college to learn everything about these problems, just so I can help figure it out. It's so exciting and enticing, to see things like this unsolved to this day
Sazy Plew
Sazy Plew Il y a mois
No
Someone
Someone Il y a mois
I think a better term for "symmetric" is.. Bipolar.
Vini
Vini Il y a mois
Background music sounds like Twin Peaks mystery song.
Vini
Vini Il y a mois
The standard model / QFT is slowly reaching its limit. Extrapolating from already existing equations will eventually just make you go in circles. You need some genuinely new ideas.
King Ronin
King Ronin Il y a mois
My question is why is a chiral neutron predicted to have an electrical charge? The positive version of an electron and a negative proton should mathematically produce a neutron of the chiral constituents but of similar basic properties?
civota mu az
civota mu az Il y a mois
Would watch this whole video but goddamn it feels like Billy Mitchel is waterboarding me
Binyamin Tsadik
Binyamin Tsadik Il y a mois
Check out this paper: vixra.org/abs/1501.0225 You are saying the same thing.
Dr.V
Dr.V Il y a mois
Wonderfully informative and fantastically interesting. Thank you kindly @PBS Space Time for making this.
Make Racists Afraid Again
Please don't say "visa" versa.
Michael Sander
Michael Sander Il y a mois
To me, PBS Space Time is single best physics channel for folks who studied college-level physics, but didn't quite make it to (or through) physics grad school. Agree?
Inspiración Original
so... this means the Axiom could be used to support photon decay as an explication for dark matter?
Badger
Badger Il y a mois
I think axions and the theory itself could for the most part be replaced with formative causation as an account for dark matter/energy or other potential issues in our simulations.
Charlie Meyer
Charlie Meyer Il y a mois
A proton-like composite particle made of Axioms could get a lot heavier! A "Protaxion" might even move sub light speed despite its superluminal parts.
Kevin Reardon
Kevin Reardon Il y a mois
Dark matter only exists because we are memorized by the three body problem. The Moon and Earth are gravitationally locked, which is the same effect you see with the outer stars of a galaxy. There is no dark matter, there are gravitational rings on the outer reaches of a galaxy.
Exoplanet Research
Exoplanet Research Il y a mois
There are galaxies with barely any dark matter. They should map the total magnet fields for the galaxies, then compare the dark matter content
Clickmaster5k
Clickmaster5k Il y a mois
Calling us out. Geez
Roman Buehler
Roman Buehler Il y a mois
let me nerd away in my own world: that noise... what's that noise?!?!?! in ALL your videos, it's driving me insane and i have to focus hard on what you say... there's the music in the background, and there's you speaking, but there's also a noise, probably peaking around 600-800hz all over the videos... is that intentional by the editor to avoid hearing fatigue because of too clean sound? -> better way would be to use light audio compression on the voice track... is that because your recording environment is so noisy? -> with your budget you really should get better accoustic padding and isolation... is your editor hearing impaired and he never noticed? -> run some analysis on the sound output, find it and fix it, please!!!
Roman Buehler
Roman Buehler Il y a mois
it appears to be the mic input... FIX PLEASE!
Net Tech
Net Tech Il y a mois
Off topic, I know it is mathematically and physically possible to add positive mass to a point of spacetime but I'm curious if it is mathematically possible to add negative mass to a point of spacetime. A blackhole adds mass to a singular point by consuming mass increasing mass and gravity bending spacetime one way but is it mathematically possible to do the opposite creating negative mass effects to bend spacetime the inverse way?
Audacious Scoundrel
17 minutes of man talking to himself in the mirror.
ChefHomesteadMaker
ChefHomesteadMaker Il y a mois
That Thing That Newton Wrote, is it a must read?
Marcin Zieminski
Marcin Zieminski Il y a mois
There are 4 fundamental forces, and lots of different particles. How do scientist now which particle interacts with different forces? Ex.axions interact only with gravity and weak force, my question is why they interact only with those two forces, ? What is the mechanism behind it? Are there any laws which tell us that any given particle will interact with any given fundamental force?
Chrizzie 78
Chrizzie 78 Il y a mois
Does any of this matter?! Thank you, you've been a great audience.
Brad Bradson
Brad Bradson Il y a mois
Maybe there is no Dark Matter, maybe there is many Dark Matters
Tirlon Burke
Tirlon Burke Il y a mois
You recently did a show on infinite universes and possibly the infinity of our universe. If either is the case, shouldn’t there be a wormhole we could traverse somewhere accessible on planet just waiting for someone enterprising to push a monkey through into a magnitar and one for us to travel somewhere slightly more pleasant?
Imgay Asheck
Imgay Asheck Il y a mois
This channel still believed in inflation so I'm going to guess no
Frank Jaeger
Frank Jaeger Il y a mois
I believe that in Latin the letter "c" is always pronounced as the letter "k". So the second way you pronounced it would be the most correct.
fghsgh
fghsgh Il y a 21 jour
In classical Latin, yes, but Newton didn't live in 100 BCE.
Seven
Seven Il y a 28 jours
👌🏾
Max Jones
Max Jones Il y a mois
I love your content Cosmic Jesus.
shipmaster3
shipmaster3 Il y a mois
Do you think that there is some relationship between the photon energy and the strength of a magnetic field needed to convert it? or is it just a sufficiently strong magnetic field is needed to any photon into an axion regardless of energy ?
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