Victoria Kaspi Public Lecture: The Cosmic Gift of Neutron Stars

  Рет қаралды 278,169

Perimeter Institute for Theoretical Physics

Perimeter Institute for Theoretical Physics

8 жыл бұрын

In her Feb. 3 talk, Dr. Victoria Kaspi of McGill University, explored neutron stars -- mysterious celestial objects can shed light on some of the most vexing questions in the universe.
Perimeter Institute (charitable registration number 88981 4323 RR0001) is the world’s largest independent research hub devoted to theoretical physics, created to foster breakthroughs in the fundamental understanding of our universe, from the smallest particles to the entire cosmos. The Perimeter Institute Public Lecture Series is made possible in part by the support of donors like you. Be part of the equation: perimeterinstitute.ca/inspiri...
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Пікірлер: 377
@ohasis8331
@ohasis8331 Жыл бұрын
I was intellectually aware of the periodicity but it was like being blind till I heard the periods - like a flash of light in my brain. For that alone, I found this a worthy lecture so thankyou Dr Kaspi.
@markgoretsky766
@markgoretsky766 3 жыл бұрын
Victoria has distilled most interesting facts about neutron starts in this astonishingly accessible lecture. Wish I had a professor like that!
@ossiedunstan4419
@ossiedunstan4419 2 жыл бұрын
Sorry but their where no facts released here and nothing to back them up. claims with out evidence can be dismissed with out evidence, this does not just apply to religious claims. personal opinion is not evidence or facts.
@Dr10Jeeps
@Dr10Jeeps 4 жыл бұрын
Excellent talk. Thank you Dr. Kaspi, and the Perimeter Institute. It is these kinds of talks in science (physical, social, biological) and history that make the internet so fascinating.
@grunthostheflatulent9649
@grunthostheflatulent9649 3 жыл бұрын
Neutron stars are totally fascinating. The power they produce is mind bending.
@GeoffTV2
@GeoffTV2 5 жыл бұрын
Thank you to Dr. Kaspi and the Perimeter Institute for Theoretical Physics for this excellent presentation, I loved it.
@richarddeese1991
@richarddeese1991 5 жыл бұрын
Thanks for a fascinating talk! Pulsars & neutron stars in their various forms really sound like incredible objects that can teach us some very important things about our universe. I thoroughly enjoyed this, and look forward to more info! 𝓽𝓪𝓿𝓲.
@johnm.karian5295
@johnm.karian5295 3 жыл бұрын
A gifted scientist and teacher, who, in my opinion, presented one of the FINEST presentations on the topic. A CLASSIC.
@AugustusOakstar
@AugustusOakstar 4 жыл бұрын
I read a great sci-fi book called Dragon 's Egg about a nuetron star that makes a far approach to the solar system, and a team is sent to investigate. It happens that this star is inhabited by sentient creatures that are quite small but so very intelligent. I. Won't spoil the book any further. I am so glad to be a member of a species that has eyes. Plus a curious nature that loves all things considered a bit different. I. Love this professor's enthusiasm and zeal. Long maay the stars shine down upon her!
@RosePhoto1
@RosePhoto1 8 жыл бұрын
A real life superhero! An amazing talk that I could watch and listen to over and over.
@savage22bolt32
@savage22bolt32 2 жыл бұрын
But there are so many to listen to.
@MrSejbaj
@MrSejbaj 3 жыл бұрын
The kids in the Q&A section at the end! Love it!
@Diamondback338
@Diamondback338 3 жыл бұрын
This is awesome. I’ve been waiting well over a decade to see if someone In the field would record the radio waves and arrange them into a musical composition. Not quite what I had always imagined it as, but it’s real! That was super cool to hear. Loved this lecture.
@TechNed
@TechNed 6 жыл бұрын
Great talk. Learnt some new stuff. Thanks for making this accessible. PS. I'm just blown away by the thought of attosecond precision -- not just that the rotational period is so precisely regular but that humans have developed the means to measure it!
@peterolbrisch1653
@peterolbrisch1653 2 жыл бұрын
Learned.
@TechNed
@TechNed 2 жыл бұрын
@@peterolbrisch1653 not if you were born in England where English is the dominant language.
@savage22bolt32
@savage22bolt32 2 жыл бұрын
@@TechNed Peter Olbrish is burnt.
@deeliciousplum
@deeliciousplum 4 жыл бұрын
Wonderful and enlightening talk. This is a gem.
@paulwhite6995
@paulwhite6995 Жыл бұрын
Thoroughly absorbing video, one of the best I've watched. Packed with detail I'd never seen before and very well illustrated by understandable graphics/animations. Plenty of bonus "fun facts" and clever references. This lady has great presentational skills (hope that praise can be fed back). Only criticism: the demo sounds were too loud. Minor disappointment: Jocelyn who first "discovered" pulsars, and who tutored me one year - bless her, was not credited.
@theoschijf8155
@theoschijf8155 6 жыл бұрын
Fantastic presentation. Thanks. Also thanks for sharing these lectures online.
@taniamoraga23
@taniamoraga23 7 жыл бұрын
Beautiful lecture! Thank you very much.
@NazriB
@NazriB 2 жыл бұрын
Lies again? National Service
@foxylady1048
@foxylady1048 3 жыл бұрын
Fantastic talk. I’m in no way a intelligent person, but after watching your lecture about neutron stars I’m much better informed. Easy to listen, easy to understand, thank you so very much Victoria.
@michaelritchie5303
@michaelritchie5303 3 ай бұрын
I would disagree with you. By choosing to watch this presentation, out of curiosity perhaps, you demonstrate that you ARE an intelligent person. Don't sell yourself short. Cheers.
@mrspidey80
@mrspidey80 8 жыл бұрын
"LIGO is an amazing experiment that's likely to yield some interesting fruits soon." she says one week before the announcement that LIGO actually detected gravitational waves. I wonder if she knew already.
@BadtemperedandGrumpy
@BadtemperedandGrumpy 8 жыл бұрын
+mrspidey80 I am guessing so .. because I believe that they detected them a lot earlier .. like many months before.. But before any announcement can be made everything has to be verified many times which takes time ....
@MrAlRats
@MrAlRats 7 жыл бұрын
Unlikely that she knew any more than the rumours that were going around before the announcement, thanks to Lawrence Krauss having tweeted about the possible detection. Only LIGO members knew for sure and she is not a LIGO member.
@BojanPetrovicvft
@BojanPetrovicvft 5 жыл бұрын
@@BadtemperedandGrumpy you are right 101% i belive.
@katiekat4457
@katiekat4457 5 жыл бұрын
She probably knew or had heard. It was leaked out by some of the people there, probably by accident. Meaning they were so excited that they told friends and family and then they couldn’t help but to leak that further. LIGO was under pressure for a while to make the announcement because the information was swirling around prior to Lawrence Krauss tweeting anything. Ligo was getting a lot of phone calls asking if it were true. Not to mention that it was known at two locations and they had talked to each other of course.
@waynerainey2606
@waynerainey2606 4 жыл бұрын
you believe that gravitational wave BS. LOL, they don't know what they detected, most think it's just background noise as the group from Denmark. This woman loves to tell 'stories' and she may believe he own bs stories but in the end ... they found just what they were looking for but as One Physicist said, "In that jumble of noise you could extract anything from it"
@user-ln5nk7mg4v
@user-ln5nk7mg4v 6 ай бұрын
Excellent and thought provoking presentation.
@johnmann394
@johnmann394 4 жыл бұрын
Such a great speaker!! PL lectures are aways great sound and presentation .
@MARKCREEKWATER1
@MARKCREEKWATER1 5 жыл бұрын
Absolutely & positively the best video I've seen re "neutron stars" --- i.e., supernova-remnant cores [SRCs]. Good job, Dr. Kaspi !!
@rafapieroni84
@rafapieroni84 4 жыл бұрын
Loved the cosmic music. Thanks for the great class.
@edwardlee2794
@edwardlee2794 5 жыл бұрын
I'm going to visit CERN this week. Obviously intrigued. When I return. I Would turn to P I. Thanks for the work and success and promoting it.
@azuleno17
@azuleno17 8 жыл бұрын
Awesome lecture. Thanks for sharing.
@Raphael_NYC
@Raphael_NYC 6 жыл бұрын
Thank you Dr. Kaspi. raphael santore
@WhippyWhipGaming
@WhippyWhipGaming Жыл бұрын
i love the way she always says "we believe" or "we think", too many people talk as if this theories are fact
@nitinrbhat
@nitinrbhat 3 жыл бұрын
Thanks so much that was a brilliant lecture
@debbailey5446
@debbailey5446 4 жыл бұрын
I LOVE THESE LECTURES!!!!
@omarvelasco9954
@omarvelasco9954 7 жыл бұрын
I want to point out that this lecture fully gave me a glimpse towards things I didn't knew at the moment about NSs, which currently I am working on. Things said here I never heard of before will help me a lot for my dissertation due this year, and possibly this video might have saved me from reading a bit!, but totally will make me read more and more from related-topics works!! Thank you very much.
@JRondeauYUL
@JRondeauYUL 4 жыл бұрын
Merci Victoria!
@zapfanzapfan
@zapfanzapfan 4 жыл бұрын
"Original spin", ha, ha, ha! Very good lecture! Detecting super massive black holes would be awesome.
@lamar6297
@lamar6297 2 жыл бұрын
You must be happy now that we have 2 pictures of 2 supermassive black holes
@motobrikerestorations1354
@motobrikerestorations1354 3 жыл бұрын
really, really interesting and so well pitched so as numpties such as me could follow... welll done guys and thank you
@jimcarriefanclub1537
@jimcarriefanclub1537 5 жыл бұрын
Excellent talk, really informative
@aprylvanryn5898
@aprylvanryn5898 2 жыл бұрын
Between PI and WSF I get so much information on deep ideas. Thank you so much.
@piperlifesuperdog9583
@piperlifesuperdog9583 4 жыл бұрын
She made this subject a lot of fun
@GalenMatson
@GalenMatson 4 жыл бұрын
Upvoted for 'original spin'.
@wsmithwsmith
@wsmithwsmith 8 жыл бұрын
7 days before the gravitational waves discovery was announced
@UtraVioletDreams
@UtraVioletDreams 4 жыл бұрын
A dim audience, however some asked really good questions! I liked her way of speaking and jokes. Braver then 007!
@Ryo-sd9rx
@Ryo-sd9rx 2 жыл бұрын
Love this stuff so much! Life is amazing
@ethorii
@ethorii 6 жыл бұрын
She seems really cool.
@AmxCsifier
@AmxCsifier 8 жыл бұрын
I'm thankful for this lecture series
@alangarland8571
@alangarland8571 6 жыл бұрын
It's OK, worth a bump anyway.
@cymoonrbacpro9426
@cymoonrbacpro9426 5 жыл бұрын
AmxCsifier Oh yeah, how about your mom and your dad and your uncles and your grandpa And grandma.
@cymoonrbacpro9426
@cymoonrbacpro9426 5 жыл бұрын
That’s insensitive you should have also mention the Petri dish!
@saultube44
@saultube44 4 жыл бұрын
These talks are great, I learn the latest in Astrophysics which fascinates me, and these Professors are clear and give lots of info about the subject. Neutron stars are great, we could in a distant future go near them and farm the abundant free energy they produce, capture electrical charges directly in huge capacitors, and also maybe directly magnetic energy too and bring those to colony planets, same thing with the streams of Black Holes, and plug my charger hahaha. Keep up the good presentations, update presentations on the subjects would be great too, this is from 4 years ago, I'd assume we have news, even short presentations would be OK for me.
@saultube44
@saultube44 4 жыл бұрын
@trf12567 You assume too much, the further we predict something, the more inexact tends to be. You assume with certain pretentious arrogance, we'd be free from energy sources, we'd be fine, no such thing, Nature has a way to take as much as it gives, so we'll always need to spend energy, therefore produce it, and in the large scale of space colonization, that could be a lot of it, all the time. "Near them" is not necessary near, but millions of KMs away, maybe some light years away, in orbit, to not get crushed or sucked in. Most people don't even see clearly, what this takes, it'd take lots of energy not to fall in, energy to travel fast enough to orbit and have energy to compensate for gravitational friction, people oversimplify because don't know and don't really think about things, the mistakes and tragedies happen.
@ScxttBeats
@ScxttBeats 3 жыл бұрын
I have literally no idea how I got here, but this is fascinating!!
@wati52
@wati52 7 жыл бұрын
Great lecture, thanks.
@matthewcallaway9228
@matthewcallaway9228 4 жыл бұрын
Dr. Victoria Kaspi LOVE you LOads big hugs & kisses xxx love Matt
@hooya27
@hooya27 8 жыл бұрын
Is there a measurable effect from the pressure of the beaming radiation upon the other pulsar in a binary? Just wondering.
@QuantumWrench
@QuantumWrench 8 жыл бұрын
Fantastic mix of content and presentation. I liked the questions too. The _too smart_ children were great, their curiosity and subject insight are very much needed for the future successes of cosmology. I could stand a little more math/equations. After following neutron star shows on YT, I ache for just a little more depth - but not too much because of math. I was able to pass diff-eq and assorted numeric analysis courses with comprehension. I know asking for a little more _meat_ probably results in a side of beef. Still on my fave and rewatch list.
@TechNed
@TechNed 6 жыл бұрын
I've only caught around three of these PI talks and that little boy has posed a subatomic particle question at each of them!
@jamespurcer3730
@jamespurcer3730 5 жыл бұрын
@@TechNedNed, maybe he's a planted actor, a set-up.
@TechNed
@TechNed 5 жыл бұрын
@@jamespurcer3730 Hmm. I rather think, given the appropriate influences growing up, many kids could gain his level of subject comprehension.
@mikelouis9389
@mikelouis9389 5 жыл бұрын
@@jamespurcer3730 Most likely a child of someone connected to the Institute. Also, he displays some symptoms of high functioning Aspergers Syndrome. Savant behavior for one.
@JustOneAsbesto
@JustOneAsbesto 8 жыл бұрын
I'm just burnin doin the neutron dance.
@jdocean1
@jdocean1 5 жыл бұрын
JustOneAsbesto Woo hoo!
@michael3263
@michael3263 7 жыл бұрын
Binary pulsars as gravity wave detectors is some next level scientific awesomeness. Would not have thought of that. I got a kick out of the original spin joke which was probably due to never having heard it before. Most sciencey jokes are painfully lame but that one was halfway creative.
@ZoologyCreed
@ZoologyCreed 2 жыл бұрын
Amazing lecture
@whirledpeas3477
@whirledpeas3477 2 жыл бұрын
Very nice and well thought out comment. Up there with some of the best ever. ❤
@simonpender8331
@simonpender8331 4 жыл бұрын
Go to 30:30 to hear the lovely sound of all the pulsars is the Terzan 5 cluster. Great stuff.
@EGarrett01
@EGarrett01 8 жыл бұрын
I came for the hair and was not disappointed.
@ralphbougher62
@ralphbougher62 8 жыл бұрын
As Einstein once thought (though not aloud, hence no record of this)... 'Hair is at the same time the least important, and the most noticeable thing going on above the neck.'
@HarryNicNicholas
@HarryNicNicholas 4 жыл бұрын
a lot of neutron activity went into it i imagine. who wants static hair? i like the way she has dressed smartly for the talk, but still manages to give off an air of el professor loco
@shainemaine1268
@shainemaine1268 4 жыл бұрын
Professor Trelawney lol
@voidremoved
@voidremoved 4 жыл бұрын
Just knowing she got the same hairdo down low is a cosmic gift.
@svendhansen5427
@svendhansen5427 4 жыл бұрын
Had she worn the hijab, I could have focused better. Thank you Lord that such a humble natural woman exists and can make us spin like pulsators around a beautiful star
@Curelet
@Curelet 8 жыл бұрын
Check out at 30:40 the fascinating symphony from heaven of pulsars music from a stars cluster. See also the beginning of pulsars music topic @26:55.. Great talk!
@Curelet
@Curelet 7 жыл бұрын
See at 4:15 why neutron starts are cosmic gifts that keep giving & continue to amaze astronomers.
@douglasdustin6550
@douglasdustin6550 5 жыл бұрын
Nice Speech!
@timelsen2236
@timelsen2236 6 жыл бұрын
Please teach camera people to dwell on chalkboards so on line viewers can gaze at the equations while listening, LIKE THE AUDIENCE! The incessant stream of facial shots is not appropriate unless these are soap operas. This has an aspect of excluding segments of society from getting the full benefit of otherwise fabulous lectures. Export the full experience to online viewers. That's the whole point, right?
@citizen240
@citizen240 4 жыл бұрын
Tim Elsen ... keep camera on chalkboard or projector... Yes, I agree; that seems to be a universal annoyance. So, to compensate, I backspace the video 15 seconds or so, then press pause so I can contemplate the lecturer’s material and sometimes capture a screenshot.
@josifoxxido
@josifoxxido 3 жыл бұрын
+q++q+++++q++++++++++++++++q+++++qqa7
@savage22bolt32
@savage22bolt32 2 жыл бұрын
If we were in attendance at the lecture hall, we could take the necessary time to view the PowerPoint or chalkboard. I'd like to do the same on line without hitting pause.
@MaximMotor
@MaximMotor 2 жыл бұрын
@@citizen240 and a CV sxsxx
@MaximMotor
@MaximMotor 2 жыл бұрын
X SC SC xsxxxx x and
@carlantonsen6011
@carlantonsen6011 3 жыл бұрын
Fascinating
@k3rnel_p4nic
@k3rnel_p4nic 8 жыл бұрын
That was awesome....makes me wish I was a scientist!
@BenjaminMJ
@BenjaminMJ 3 жыл бұрын
you can be if you want
@aA-iv5fg
@aA-iv5fg 3 жыл бұрын
Gracias.
@wkgurr
@wkgurr 3 жыл бұрын
Is there an upper speed limit for the rotational speed of a pulsar in terms of centrifugal forces? I.e. a speed at which centrifugal forces would shred it given its density and its diameter of 10km. Or is this "shredding" speed limit beyond the speed of light?
@andywalker9079
@andywalker9079 4 жыл бұрын
Very interesting lecture
@Forsage237
@Forsage237 7 жыл бұрын
after viewing, have the urge to again watch Darren Aronofsky film "The Fountain"
@johnelrick8945
@johnelrick8945 2 жыл бұрын
Victoria Kaspi and her amazing Pulsar Organ!
@hmessec7682
@hmessec7682 Жыл бұрын
very animated and entertaining speaker!
@nutbunny10
@nutbunny10 3 жыл бұрын
Interesting talk. Very informative. I think for that last question the speaker should have been forthright and said she didn't know if and how her audience demographic changes with respect to level of technicality - not many people would pay attention to that variable.
@steves1608
@steves1608 4 жыл бұрын
I think a great assignment for an engineering student would be to design the structure necessary to support a cubic cm of neutron star material.
@aurelienyonrac
@aurelienyonrac 3 жыл бұрын
Easy the support is a neutron star . 😋
@nandakumarcheiro
@nandakumarcheiro 3 жыл бұрын
Music of gravity waves ceases at blackhole formation after merger of Neutron star?
@Aluminata
@Aluminata 8 жыл бұрын
The Earth is spinning at about 400 meters per second and even at that speed the equator is bulging out- much faster and the planet would come apart at the seams. A Neutron star is spinning at about 45,000 kilometers per second! Nothing on Earth could ever be made to spin that fast! Even a small coin sized piece of titanium would annihilate it self at that speed.
@morningmadera
@morningmadera 8 жыл бұрын
+Ralph Latham what's your point?
@mikeclarke952
@mikeclarke952 5 жыл бұрын
The strong force is a million times stronger then the electromagnetic force.
@Chebornek
@Chebornek 4 жыл бұрын
@@morningmadera What he's saying is that the Neutron Star Hypothesis is just that. A badly thought out and ever changing hypothesis which is totally made up of BS. It is easily torn apart by actual observation and known physics. These guys have been doing so for years: kzbin.info/www/bejne/qpqznqJ8oqehhJo
@6chars
@6chars 8 жыл бұрын
Great talk. I wish Dr Kaspi had spoken a bit about Magnetars which are another type of Neutron stars.
@schitlipz
@schitlipz 8 жыл бұрын
I wanna know why a giant neutron can have a magnetic field. And I wish her better luck with her geeky jokes in the future, or perhaps it was just the audience.
@a.randomjack6661
@a.randomjack6661 8 жыл бұрын
+schitlipz Magnetic fields come from materials churning inside planets or stars. Gravitational pressure is extreme in Pulsars that even that dense of a material has to attain some sort of _liquidish like state_ in there for the friction to occur and generate those formidable magnetic fields.
@omkarchavan5940
@omkarchavan5940 8 жыл бұрын
+A. Randomjack but some sort of charge is responsible for magnetic fields na...
@nicholashylton6857
@nicholashylton6857 8 жыл бұрын
+6chars I wholeheartedly agree. Magnetars are ULTRA-cool! Back in 2004, the pocket monster, SGR 1806-20, gave the Earth a slap in the face from *_literally_* half way across the galaxy! It blinded orbital x-ray telescopes that weren't even pointed anywhere nears its direction, momentarily lit up the Moon in x-rays like a huge flash bulb and could have been seen visually for a split second from the surface of the Earth. All that awesome power emerged from an object about the size of an average city, from crack in its surface measuring in centimetres!
@6chars
@6chars 8 жыл бұрын
Nicholas Hylton awesome. nature is amazing.
@raulchavez603
@raulchavez603 4 жыл бұрын
57:30 When that 9 year old said "No." And cut her off I was fully jaw dropped and my sister who wasn't even paying attention to my video was like "bruh what" by the attitude you can tell he is a very smart kid 🤣🤣
@LampDoesVideogame
@LampDoesVideogame 8 жыл бұрын
I can honestly say that the 'music' at 30:30ish was just beautiful.
@nandakumarcheiro
@nandakumarcheiro 3 жыл бұрын
We are interested in vela star the expansion and contraction mechanism the change in magneticfield acting as heart pumping mass energy .
@nandakumarcheiro
@nandakumarcheiro 3 жыл бұрын
Magnetic field interact that oscillate between zero align and 45 degrees the angular momentum maximum at 45 degrees but when shifted to 90 degress peculiarly emitting gamma and radio pulses comparable with that of Uranus spin.
@DoggoWillink
@DoggoWillink 5 жыл бұрын
This was, by far, my favorite one so far.
@jimm1028
@jimm1028 5 жыл бұрын
The second pulsar sound was really Richard Feynman playing the bongos.
@jengleheimerschmitt7941
@jengleheimerschmitt7941 5 жыл бұрын
😁😁😁😁😁
@fransvoogt4857
@fransvoogt4857 4 жыл бұрын
Can anybody tell me if it is possible to estimate the size of a star in its main sequence according to its rotating speed as a neutron star ?
@astrocozzyamfilohiades71
@astrocozzyamfilohiades71 2 жыл бұрын
Good day dear Veronica..... Noticed in your lecture... What is the speed on the surface of a millisecond pulsar?...ie. in the equation.... V = 2xpixR = 2×π1000... But, is not the R = 5000m? Since, D of Neutron star = 10km & R = 5km.- tks.
@bryanc1975
@bryanc1975 7 жыл бұрын
Starting at 44:05 You got me, there. How does the magnetic field from the one pulsar eclipse the other one? I thought magnetic fields don't bend light. (?)
@Sara-wv3ms
@Sara-wv3ms 4 жыл бұрын
Bryan Carter they do bend light
@Sara-wv3ms
@Sara-wv3ms 4 жыл бұрын
www.quora.com/Can-a-magnet-bend-light
@ThomasHaberkorn
@ThomasHaberkorn 8 жыл бұрын
how do you differentiate between a neutron star and a pulsar whose magnetic axis is never aligned to our viewing point on Earth?
@jamespurcer3730
@jamespurcer3730 5 жыл бұрын
Neutron stars are pulsars when their accretion disks are ejecting particle beams from the poles, but that is only when they have material falling into their gravitational wells. Furthermore, the particle beams can only be detected when they sweep across the Earth in their precession.
@amedeofilippi6336
@amedeofilippi6336 5 жыл бұрын
I wonder on what basis it is calculated that neutron stars reach so small radius during their shrinkage , because , according to simple calculations most of rotating stars , since conserving the original angular momentum, would reach a much higher radius at which centrifugal forces could balance gravitational ones thus avoiding any further shrinkage. Have seen several examples of calculations confirming the above.
@novotnyingersol9200
@novotnyingersol9200 4 жыл бұрын
Is that Feynman on the Cosmic Bongo at 28:18?
@omkarchavan5940
@omkarchavan5940 8 жыл бұрын
what's the difference between Binary pulsar and double Pulsar?
@johnnym6700
@johnnym6700 5 жыл бұрын
Perimeter Institute for Theoretical Physics How would you determine the density and mass of a neutron star that is 250 light years away?
@rovidius2006
@rovidius2006 4 жыл бұрын
This are very elaborate calculations that can 't be had in one sentence , but available to the willing .
@coolxjl
@coolxjl 8 жыл бұрын
This is a great talk. I've always been curious, though, can any one tell me how is the magnetic field generated in a neutron star?
@omarvelasco9954
@omarvelasco9954 7 жыл бұрын
Synchrotron radiation is the main contributor (due to plasma), as far as I can remember... this was a question done by a teacher to me in a final course seminar I gave a couple of months ago... Plus, never forget charges moving always produce magnetic fields. It might be now obvious to you these objects have both of them
@gamesbokgamesbok7246
@gamesbokgamesbok7246 6 жыл бұрын
CoolJL A neutron star would have no charge. The secret is that they're not pure neutrons.
@piperlifesuperdog9583
@piperlifesuperdog9583 4 жыл бұрын
Isn't it from the extreme density?
@piperlifesuperdog9583
@piperlifesuperdog9583 4 жыл бұрын
Sorry, mis read your question
@michaelkarajan
@michaelkarajan 4 жыл бұрын
KZbin lead me here. Bravo. Came from TB's "Impossible "Neutron Star" Shatters Theory". Now where's that f**king back button!
@malectric
@malectric 8 жыл бұрын
I think it's pushing it to say that the artist's impression is an accurate depiction of a neutron star; for one thing you wouldn't expect to see a few discrete magnetic field lines would you?
@jamespurcer3730
@jamespurcer3730 5 жыл бұрын
Not unless they were filled with plasma.
@astrocozzyamfilohiades71
@astrocozzyamfilohiades71 2 жыл бұрын
I meant....you indicated... 2×π×10000. Instead of, 2×π×5000.tks.
@johankotze42
@johankotze42 3 жыл бұрын
Just a thought from a yokel in the sticks... If Pulsar B disappeared (and you think it may reappear) then surely there must be Binaries with one pulsar suddenly becoming a double pulsar? That is given the relativistic precession mechanism.
@rubenanthonymartinez7034
@rubenanthonymartinez7034 3 жыл бұрын
*A Case against Neutron stars* and the things withheld to general public. Neutron stars are relatively small objects and exhibit tremendous gravitational energy which implies high matter density and the only matter candidate would be the neutron, reasoning goes, in order to achieve the densities required the neutron to have these necessary properties: 1 Neutrons have a net charge a zero, therefore neutralizing repulsive coulombs Forces. 2 The Neutron also have two quantum state spin which also contributes to the packing concentration. Following the Heisenberg principle! Both of these properties give the potential for these neutrons to be able to be packed together in the densities required. Now the question becomes, what force drives them to be compacted, the answer given is the force of gravity. Gravity is the ultimate compressive Force which causes the formation of this extraordinary material called *Neutronium*. *"Houston we have a problem"* Neutron decay; this works against the formation of Neutronium. The unstable Neutron would work against achieving the density requirements, so this instability must be neutralized. Neutrons are known to be unstable, neutrons will decay into its constituents, which are proton and electron + neutrino *(N-> p+e+v)* or using the standard model of quarks, *(ddu--> dud)* which is the propensity of a down quark to flip into an up quark, now we need a mechanism to inhibits this flip from occurring, which would be needed to stabilize Neutronium! The answer again is gravity. *The missing Link; The formulation of Quantum Gravity theory* But due to the fact that we're dealing with a quantum Dynamics, gravity must be explained in terms of quantum mechanical rules, unfortunately *the theory of quantum gravity does not exist!* The introduction into the narrative of *hyperons* particles, does not resolve the issue because they *are also unstable.* *Chicken and the egg problem in neutron stars* In order to create the Neutronium you must have the gravitational field, but the gravitational field is generated by the Neutronium. Which came first, a classic conundrum of the chicken and the egg problem. Considering these facts, you can actually call the Neutron star a hypothetical object, but don't call it real.
@MrWildbill
@MrWildbill 7 жыл бұрын
Can you tell me in lay terms (no math:) how an electron is absorbed by the proton to change an Up quark into a down quark (plus a neutrino). When the electron is crushed into the proton what particle(s) are involved in this conversion? As a slight aside, why would the energy/mass on the electron not equally distributed to both Up quarks and the down Quark in the proton? I know this is pretty basic but I am trying to visualize this process and physics is sort of a hobby so I am not real math heavy in my understanding. Perhaps you or someone else on here can answer in simple terms. Thanks
@MrAlRats
@MrAlRats 7 жыл бұрын
Electron capture is an example of what's known as a weak nuclear interaction, one of the four classifications of particle interactions in nature. In particular it's a type of "charged-current interaction". It involves an electron emitting a so-called W− boson (with charge -1) while the electron converts into an electron neutrino and the W− boson is subsequently absorbed by a proton and the proton converts into a neutron (an up quark converts to a down quark). The W+, W− and Z bosons are the three carriers of the weak nuclear interaction. An up quark has a +2/3 charge while a down quark has a -1/3 charge. There are no quarks with -4/3 charge, so a down quark can't absorb a W− boson with a charge of -1.
@AngelAndTheWolf
@AngelAndTheWolf 5 жыл бұрын
So, who puts all that stuff on the blackboards, and why doesn't anyone refer to any of it?
@penguinuprighter6231
@penguinuprighter6231 3 жыл бұрын
That animation at around 43 minutes is mind boggling.
@MARKCREEKWATER1
@MARKCREEKWATER1 5 жыл бұрын
wowwie-zowwie !! Starting at 30:39 she plays the "music" of some of the pulsars in a particular ("globular") cluster of stars, and they are actually, unexpectedly, HARMONIC. I wonder: is there a reason for this ??
@ineffable0ne
@ineffable0ne 5 жыл бұрын
Whoever put together the "song" got to choose the order of the notes. With such a vast array of random frequencies to choose from, it shouldn't be too difficult to find 2 or 3 frequencies that sound nice together, and group them such.
@mountainmanws
@mountainmanws 4 жыл бұрын
The Robert C. Byrd, Green Bank Radio Telescope: The World's Largest Steerable Radio Telescope and the World's Largest Structure named for a Klansman. I am happy Dr. Kaspi omitted his name.
@user-xg9ub9vr6f
@user-xg9ub9vr6f 6 жыл бұрын
Hello I have questions: The atom is the nucleus and the electron. 1-Why does the electron not come out of the atom? 2-Why do not the clouds fall on the ground? 3-Why did not the moon fall on Earth? 4 - What are the components of the fabric of the universe? 5-How did the space-time fabric arise? Please send the five questions to cosmologists .
@katiekat4457
@katiekat4457 5 жыл бұрын
The moon is falling. Just like all the planets are falling into the sun. Physics101 will answer all your questions.
@riadhalrabeh3783
@riadhalrabeh3783 Жыл бұрын
Correction please(min 39:21): the moon changes its orbital distance from earth due to the loss of energy in the tide on earth and this is Newtonian. Thus it is not true that Newtonian mechanics predicts constant distance for ever.
@caesarabdos568
@caesarabdos568 4 жыл бұрын
I like it every about Univerce about plantes have waters
@caesarabdos568
@caesarabdos568 4 жыл бұрын
replied
@joyboricua3721
@joyboricua3721 3 жыл бұрын
4 years after, albeit some of mentioned findings already came to pass, this lecture holds up excellently.
@adamhutchinson2868
@adamhutchinson2868 3 жыл бұрын
R rgb x feet
@adamhutchinson2868
@adamhutchinson2868 3 жыл бұрын
Thus j.g dr te thg f dr is f ffg rgb rr fx's rye free rye dry rye thg r444jur jug jug utt rye t thg rye tdd
@adamhutchinson2868
@adamhutchinson2868 3 жыл бұрын
R frg guy tu
@adamhutchinson2868
@adamhutchinson2868 3 жыл бұрын
Ytg tdd for art rye t tgv t te try tdd t
@adamhutchinson2868
@adamhutchinson2868 3 жыл бұрын
Tttt rec ttt thg
@tomasinacovell4293
@tomasinacovell4293 5 жыл бұрын
So dense too!
@aurelienyonrac
@aurelienyonrac 3 жыл бұрын
She is so awsome
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