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Astronomy Colloquium
" Nearby, Thermally Emitting Neutron Stars"
Date: Tuesday, April 13th
Time: 3:30 pm
Place: 3425 Sterling Hall
Speaker: David Kaplan, UW-Milwaukee
Abstract: Neutron stars are among the densest objects in the universe. The conditions in their centers are largely unconstrained by current theoretical physics or terrestrial laboratories, leaving a wide variety of compositions and structures possible. Observations of thermal emission from neutron stars -- specifically measurements of their sizes and cooling rates -- may therefore be the best way to constrain the behavior of matter in these extreme conditions. I will discuss a sample of nearby, cooling neutron stars that we are using for this purpose. We are attempting to pin down the basic parameters of these neutron stars with a variety of ground- and space-base observations, coupled with theoretical modeling. Along the way, we have encountered a number of interesting astrophysical puzzles that I will describe.
Host: Astro Dept
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