David J. Jeffery
Research Interests
Theoretical Astrophysics; Supernovae; Radiative Transfer
Supernovae are the giant explosions of old stars.
With the singular exception of SN 1987A in the Large Magellanic Cloud,
the explosion event has never been observed: it is relatively dim and
brief.
In the weeks following the explosion, the expanding supernova ejecta becomes
very luminous---brighter than entire galaxies in some cases.
Thus understanding supernovae requires interpreting their light and spectra
from well after the explosion.
In my research career I have specialized on analysis of supernova spectra
using radiative transfer methods.
In past work I have largely concentrated on qualitative analyses.
Currently, the ORNL atomic and molecular astrophysics group of which I am
part, is improving supernova spectral analysis by trying to include
all important atomic and molecular processes, and by using the best
available atomic and molecular data.
Besides supernovae, I also have interests in radiative transfer
techniques and in polarized
radiative transfer.
Recent Publications
Vita
David J. Jeffery, 423-574-4707, jeffery@orph01.phy.ornl.gov
This file was last updated Friday, 1996-Nov-29