Current Work - Dan Dewey


My main research areas include Supernovae (SNe) and Supernova remnants (SNRs. See the Chandra-view of SNRs ! ) : their plasma physics and observations of them with the HETG on Chandra. The high resolution of the HETG can provide better identification and measurement of the emission lines in some SNRs, helping to determine the plasma properties. In addition, measurement of Doppler shifts of lines gives velocity information along the line-of-sight, adding a "third dimension" to the structure of the remnant. HETG observations of 3 SNRs show such clear spatial-spectral signatures: the Galactic SNR "Cas A", the SNR "E0102" in the nearby Small Magellanic Cloud, and the 20-year-old SN 1987A in the Large Magellanic Cloud.

HETG GTO observations of SNR 1987A were taken in early 2007
and show clear effects of the expanding shocked ring material.

Galactic SNR Catalogue
LMC,SMC SNR Catalogue
Immler's X-ray SNe List

and Chandra's 10th year!

Some of my work-in-progress:


Model of SNR 1987A components


Created by dd @ space.mit.edu updated February 2009