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Meetings:
SPS meetings for the fall 2009 semester will be
held every other Thursday in MG 2090 at 6:00PM. The first meeting was on
September 3, 2009. Minutes from old meetings can be found
here.
Upcoming Physics Colloquia:
Wednesday, November 18, VH 1000, 16:30
The Multi-faceted Physics of General Relativistic Compact Objects
Gregory L. Comer
Department of Physics,
Saint Louis University
When modelling a physical system, theorists must
find the nexus between descriptions that have so
many simplifying assumptions that predictions are
basically empty, and those that are so saturated
with detail that insight is impossible to extract.
Locating this bond is perhaps the single most
important goal for modelling compact objects. The
most studied, other than black holes, are neutron
stars (which were first detected as pulsars). They
are very massive, yet small and as such require
general relativistic gravity and dynamics. They are
believed to have a crust, with increasingly
neutron-rich nuclei - forming exotic, so-called
"pasta" shapes - toward the bottom. Flowing through
these nuclei are additional neutrons in a superfluid
state. Just below the crust the neutron superfluid
no doubt coexists with a conglomerate of
superconducting protons and highly degenerate
electrons (and maybe muons at higher densities).
Deep inside, there are many possibilites, such as
deconfined quarks in a color-flavored-locked,
superconducting state. In this talk, we will discuss
an intense, international effort to model compact
stars (since ``neutron'' is clearly a misnomer).
Level: Intermediate
SPS Field Trips:
SPS appointed a "Trip Czar" (OM Goit) at the end
of last semester. We're hoping that he'll get momentum going for a
trip this school year. Previous SPS field trips have included tours of
the Fermilab accelerator and Argonne National Labs in Chicago, IL.
SPS Demo Events:
SPS will be participating in the science night at Ray
Miller Elementary on Nov. 12.
Click
here to see
photos of past SPS events
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