 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| * |
For the bright
galactic remnants,
|
|
|
|
ASCA offered the
opportunity to
|
|
|
|
map emission line
intensities
|
|
|
|
within the
remnant, and to look for
|
|
|
|
systematic
Doppler shifts.
|
|
|
| * |
The first such
study was performed
|
|
|
|
with Cas A, the
youngest remnant
|
|
|
|
in the Milky
Way. The spectrum is
|
|
|
of very high
quality, and exhibits
|
|
|
|
Ne, Fe-L, Si, S,
Ar, Ca, and Fe-K
|
|
|
|
emission.
|
|
|
| * |
The deconvolved
Doppler map,
|
|
|
|
derived primarily
from the Si K
|
|
|
|
lines, indicates
a systematic flow.
|
|
|
|
This confirmed
earlier conclusions
|
|
|
|
drawn from FPCS
observations.
|
|
