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.