Individual Research Programs
Patrick Harrington does both calculations and observations (HST) of
planetary nebulae to understand exactly how the star expels the
material which forms the surrounding nebula. Particular interests have
been construction of photoionization models, radiative transfer
problems, dust and thermal infrared emission in planetary nebulae.
Marvin Leventhal is primarily an observer.
He is using both balloon and satellite data to do astrophysical gamma ray
spectroscopy. His particular interest is in the electron/positron annihilation
line at 511 keV emanating from our own galactic center. The origin of this
radiation is still unknown but may be associated with a population of stellar
mass black holes in the galactic center region and/or historical supernova
explosions.
Bill Rose specializes in
theoretical descriptions of particle acceleration in energetic regions
like supernovae and radio galaxy hotspots.
Virginia Trimble has done both observational
and theoretical work in a wide variety of areas. Most recently she has
been studying the corona of magnetic white dwarf stars using X-ray (
ROSAT)
and ultraviolet (EUVE) satellite
data.
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A computer model of the Eskimo Nebula bubble produced by the fast
wind from the central star. The model also features an equatorial
disk of material. We believe this is similar to the three-dimensional
shape of the Eskimo, if we could view it from another angle. From
the earth, we are actually looking down the long axis of the bubble.
(From Pat Harrington's web page).
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