I pulled this out of the Fun Papers in Today's arXiv thread since I'd like any spawned discussions to take place in separate threads, lest they get lost in the long resource thread.
Forming opinions as we speak
Last edited by trinitree88; 2012-Jul-13 at 03:43 PM. Reason: typo
Hmmmmm, didn't think about it before, but does that ejection process also contribute to some of the spin?
I think Arcones & Thielemann ignored parity effects purposely, as their paper seems to be the determination of how the formation of the different elements proceeds, more than the determination of the how the ejection of the neutron star proceeds.
Whenever I post a neutrino article, I always think of you. I usually either get more information, or a correction. Always worth it.
When the data is checked, most Sne remnants are barrel-shaped...~85%, and empty....~495/500,....and many pulsars are not associated with their long gone remnants, but are free floating with high space velocities. pete
The relative abundances depend upon the equation of state of the type-2 fireball which varies a bit from model to model. Basically, as I understand it, the eigenstates of the neutrinos become superimposed with the mass eigenstates in degenerate matter, and that allows them to flavor-switch from electron-type to muon or tau-type. The branching ratios are used to draw a triangle to form the mixing angle...analogous to the Cabibbo angle for quarks. They are just now finishing the work on theta 1,3..which was slowed by the Fukushima tsunami. It's ~ 0.1, and they were hoping for a non-zero result around there (MIT Phys. Colloq.).
In type 2's the temps are so high, lots of interesting stuff is going on. It will be interesting to see a nearby type 2's impact on SNO. (we should be so lucky this century)...pete
Last edited by trinitree88; 2012-Jul-22 at 03:59 PM. Reason: links