|
|
4:10pm
|
|
National Superconducting Cyclotron Laboratory Seminar
(Conferences / Seminars / Lectures)
A significant fraction of stars between 7 and 11 solar masses are thought to become supernovae, but the explosion mechanism is unclear. Does the star collapse to a neutron star, or is it disrupted by a thermonuclear explosion? As it turns out, the answer depends critically on a small number of electron-capture reactions that take place in the star's degenerate oxygen-neon core. Of particular interest are the electron captures on 20Ne, which trigger the explosive burning of oxygen. In this webinar, I will review our current understanding of the final evolution of intermediate-mass stars, focusing on the important role played by the electron-capture reactions. I will discuss recent progress made in constraining the all-important electron-capture rate on 20Ne, clarify the astrophysical implications, and identify remaining gaps in our knowledge. The speaker of this webinar will be Oliver Kirsebom from Dalhousie University.
more information...
|
|
517-355-9671
