We are the Joint Institute for Nuclear Astrophysics - Center for the Evolution of the Elements. We bring together experimental & theoretical nuclear physicists, astronomers and computer scientists to push the frontiers of research in nuclear astrophysics
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Since the neutron star can withstand the bounce upon forming by rebounding to a higher state of equation then they can be much larger than the smallest ones we see. However some up them upon cooling do drop into nothingness of a black hole. Also spin angular momentum also seems to aid the largest size. So the balance is exquisite. The fact that they were theorized soon after the discovery of the neutron means they do need added more abundantly to heavier elements to keep the protons from flying apart with so much repulsion. In fact why they gain so much energy upon fission and why less and less energy is obtained when heavier elements fuse. My guess is most of the heavier elements in the Earth's crust was from a kilonova in the cloud forming the solar system. Thus the range of rare earths seeming to be so numerous was from decaying neutron star collision fragments and had to cool enough to collapse into the solar system. All this means I wonder how rare life is in the universe.
To me the question of the elements is not the correct question. How much of each element in the crust means it is a much better question? All the results of this question means how common the process is among sunlike stars. Are we unique? How unique? To me, understanding better the equation of state is more interesting. By this I mean, what value of solar masses is by studying the length of gamma ray bursts indicates how close to the lengthiest gamma ray burst, exactly at what exact level of length of gamma ray burst from the collapsing neutron star creates the most lengthy gamma ray lifetime, exactly solar masses, spin angular momentum, length of burst, magnetization of the resulting neutron star, does the majority of these elements come from a regular supernova, or was earth formed from a kilonova, which might be more rare. Like the amount of gold, amount of thorium, the amount of uranium, even an element like osmium or cobalt or zirconium.
❤❤❤ Where is the scientific interest and curiosity for new experiences? BIG ERROR in measuring the Universe, black holes, dark energy,... Let me judge all this by the result of a direct experiment, gentlemen of physics Let's do the Michelson-Morley experiment on a school bus and determine the speed in a straight line - this is exactly the experiment Einstein dreamed of. Perhaps we will see the postulates: “Light is an ordered vibration of gravitational quanta, and Dominant gravitational fields control the speed of light in a vacuum.” There is a proposal for the joint invention of a HYBRID gyroscope from non-circular, TWO coils with a new type of optical fiber with a “hollow core”, where - the light in each arm passes along 16,000 meters, without exceeding the parameters of 0.4/0.4/0.4 meters and mass - 4 kg.
too many adds, wont be coming back!
lecture begins @6:00
This is so much more informative and detailed than other KZread sources. I love it!
great!
can new elements be created in the future, or is the current chart of chemical elements completed?
🎉FRESH🎉
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Let's take a ride around the Universe, see its size, the main thing is not to be afraid. In the Michelson-Morley experiment, the arms must be made parallel. To do this, it is necessary to use optical fiber laid in a helical line 25 km long on a frame of cylinders 1.5 meters long … (catamaran type)
Great video, thanks and congratulations ... This other video teaches new physics, show hidden variables to study gravity, with a rational demonstration of the non-existence of dark matter kzread.info/dash/bejne/lGmIt4-SetWzhqg.html
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The sound quality on here is not good. Hard work to listen to unfortunately.
what are the stellar elemental detection limits [kg concentration] gauged against the detection limits of earth's 92 periodic table detected elements [1 'ppb' detection threshold].... ?
loved the lecture!
Hello to you all. An engineer is needed who will help change the connection scheme of optical fiber coils in FOG, and they will implement Einstein's inertial mental experience. If while moving 🚆, we will carry out the Michelson Morley experiment in it, approximately; using in the experiment, for 5000 m, an optical fiber wound in (not a round coil where the length to the width of the coils is approximately 2/1) and two coils are located "X", such as from one monolith with dimensions of 25 cm and a weight of 0.8 kg , which allows you to take additional noise protection. Through the results of the experiment, in a new, fresh, PURE look through the quanta of gravity, we will consider; Cosmology, Astrophysics, Universe,
Gravity waves. Awesome topic to discuss. Appreciate the work.
Just wanted to say this helped me so much in my astronomy master. Amazing video!
Promo'SM 💐
i would do worse cant lie
15:00 new process/fission
9:40 neutron capture 23:30 fission
8:40 proton/neutron 26:30 neutron decay only found in supernova
13:33 simulation on neutron capture nucleosynthesis 23:00 r-process pattern 24:20 where in milky way?
19:53 stellar evolution
Hi, I want to know how the ambient density, magnetic field, distance to snr, eta of Bohm, and injection parameter affect the evolution of a snr. Can you recommend material?
6:30
Very Useful. GREAT!
All these JINA-CEE lectures and presentations are interesting. But they all are not well documented as publications on the Internet. That requires a few links, and clear documentation of who is involved, the tools they are using, what projects they are part of, what goals they are trying to accomplish, if the projects are open, where the raw data and algorithms are available. Words and pictures about models, but not the models themselves. No equations, no mention of data streams. No software or algorithms that HAVE to be used to get these diagrams and pictures. Nothing really quantitative. All descriptive, or words about quantitative studies done elsewhere, done by someone else, done essentially hidden. Descriptive, imaginative (in a human imagination, and somewhat shown), artistic, creative. But not really getting to tools, methods, best practices, real projects, real data streams and their integration and use. Teaching "How do you visualize this yourself?" But not "How do you get the computer to visualize it, and share that with others globally, on problems that can only be solved at global scale?" No links to papers, no links to authors backgrounds and preparation, no summaries of context or purpose, no links to datasets and algorithms used. Implicit links by words, but each has to be searched and found, checked to be sure it is linked to these descriptions. Wasting time for only hundreds now, but perhaps thousands or millions over the life of this video, this organization, these careers. Most of the processes can be simulated, animated, tested, refined and calibrated against real observations. With new spectral regions and sensors every day, not building a foundation for efficient use of systems and datasets and tools. Teaching how to memorize and internally simulate - but humans are NOT a good place to store this kind of data and model. "Heger" "Woods" "stellar evolution" has 6,410 entry points "stellar evolution" has 1.1 Million entry points "Kippenhahn" "Diagram" has 20,700 entry points You did not give any real framework or background. That could be done by links and references. If you are recommending a method, and this video is open to the whole Internet, then try to make it accessible to all ages, all backgrounds, and at least related subjects. Collaborations are only going to get more complex and interconnected. That doesn't mean they have to be obscure or difficult, because there are ways to work with many complex things if there is an organizing framework that everyone understands. Not by rote memorization. You might be "the only ones" today, and proud of it. But as this material becomes part of a larger effort and people need or want to fill in detailed background, this video might become the "go to" place for certain ideas, images and concepts. If you don't treat this video at least as seriously as a paper publication, you are missing important opportunities for career, collaborations, new projects. I routinely see videos of this sort that get tens of thousands or millions of views. But thrown out, and never documented. So millions of viewers have a fragmented and unlinked set of images and concept and hand waving about things - where you know the details, and could help guide. I hope you know that I like what you are doing, and just pointing out why it is important to try harder for future viewers. Put at least as much effort and time into a video (that means not just the presenter but JINA-CEE and publishers and schools) as you would a paper. I will tell you why "papers" are a terrible way to "share" on the Internet, some other time. Richard Collins, The Internet Foundation
Love the chart of final abundances vs electron fraction at about 24:34 Wish JINA-CEE would post links for every video, even older ones. Just count the cost to users each having to look up things from the video, when you can post them once and for all.
You are a very good physicist, Cesar! You explain it really well.
Thank you for this presentation. FYI, this was my search query : element isotopes in other galaxies I specifically was wanting to know more about the mixtures of isotopes and atomic weights (weighted average for each element) that are known. It blow my mind that another part of the universe will have different atomic weights and isotopic compositions. I have found myself smack in a cosmology lecture and could not quit, even when it was overwhelming. Glad to know this stuff exists. I didn't find what I was looking for, I found something better. The original quest seems small now :).
I got as far as the big bang.
I like the way she pronounces iron!
Thanks. Very hard to find good explanations of this topic
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Thank you for this talk. Where did you get the s-process table with green arrows ?
Thank you so much for posting these! It's been hard to coordinate classes to see these live.
Thank you for this appreciation to Margaret
Fine.
Thanks for uploading!!!
ahaha thanks 🙈👩🚀☄🌹