21–30 of 37 posts
Earlier quoted context omitted.
Because they are electrically neutral, and do not interact with electromagnetic fields, it would be quite hard.
Well, generally speaking, in the world of elementary particles there may be other kinds of interactions (and decay paths) as well as the good old mechanical energy - all waiting to be converted into the electromotive force.
Earlier quoted context omitted.
For the sun it's probably easier to capture the 98% of energy that's radiated as light. The sun is by far the best source of neutrinos.
For a standard core collapse supernova, the vast majority of the released energy is in the form of neutrinos.
The actual source of the neutrinos is what, something about making a neutron star out of the iron core of the star? Would that be too many neutrinos for just the iron core?
The Neutrino has always fascinated me since I first learned about particles. It's almost not of this realm with the way it interacts with matter compared to everything else.
Earlier quoted context omitted.
Well, generally speaking, in the world of elementary particles there may be other kinds of interactions (and decay paths) as well as the good old mechanical energy - all waiting to be converted into the electromotive force.
Are there new types of interactions underway that may make neutrinos interaction feasible?
Earlier quoted context omitted.
For a standard core collapse supernova, the vast majority of the released energy is in the form of neutrinos.
That always astounded me: Neutrinos hardly interact at all, but as I understand supernovas it is the neutrinos that cause all the outer layers of the star to blow off at high speed. Supposedly some of the elements heavier than iron get formed by fusion during that explosion. That's a lot of energy transferred to a lot of mass just from neutrinos. So, that's a LOT of neutrinos. The actual source of the neutrinos is wh…
> While neutrino oscillation experiments have measured the differences between the mass states, experiments like KATRIN home in on a kind of average of the three. Combining the two types of measurements can reveal the value of each mass state, favoring certain theories of neutrino mass over others. Since the universe's cruel trick seems to be that the Standard Model -- in all its ugly glory -- refuses to be falisifie…
There are a few interesting things that we could get from looking at neutrino masses. The first has to do more with the nature of the mass than the mass itself. In the standard model, electrons, muons, and taus get their mass from the Higgs field. There's a way for neutrinos to get their mass in other ways, but it requires them to be their own antiparticles. And this gives a satisfactory answer as to why their masses…
Earlier quoted context omitted.
For a standard core collapse supernova, the vast majority of the released energy is in the form of neutrinos.
That always astounded me: Neutrinos hardly interact at all, but as I understand supernovas it is the neutrinos that cause all the outer layers of the star to blow off at high speed. Supposedly some of the elements heavier than iron get formed by fusion during that explosion. That's a lot of energy transferred to a lot of mass just from neutrinos. So, that's a LOT of neutrinos. The actual source of the neutrinos is wh…
The Neutrino has always fascinated me since I first learned about particles. It's almost not of this realm with the way it interacts with matter compared to everything else.
I'm curious if there's new physics underway that may make neutrino interactions at a large scale feasible. Experiments that I know usually detect one to five neutrinos a year and I'm wondering if we could ever come up with method that can capture orders of magnitude more than that
Earlier quoted context omitted.
That always astounded me: Neutrinos hardly interact at all, but as I understand supernovas it is the neutrinos that cause all the outer layers of the star to blow off at high speed. Supposedly some of the elements heavier than iron get formed by fusion during that explosion. That's a lot of energy transferred to a lot of mass just from neutrinos. So, that's a LOT of neutrinos. The actual source of the neutrinos is wh…
They are primarily coming from neutron capture (electron + proton -> electron neutrino + neutron). During much of the collapse even these weakly-interacting neutrinos get trapped behind the high-density shock wave. As it expands and the density becomes lower, they escape in what's known as the neutronization burst.
Earlier quoted context omitted.
That always astounded me: Neutrinos hardly interact at all, but as I understand supernovas it is the neutrinos that cause all the outer layers of the star to blow off at high speed. Supposedly some of the elements heavier than iron get formed by fusion during that explosion. That's a lot of energy transferred to a lot of mass just from neutrinos. So, that's a LOT of neutrinos. The actual source of the neutrinos is wh…
I'm no expert, but as far as I'm aware it's a combination of beta decay and thermal neutrino pair production.