Speaker
Norbert S. Schulz
(MIT)
Description
The interstellar medium (ISM) absorbs and scatters X-rays and
its signatures can be used to diagnose its states of matter,
compositions, and dynamical properties. With the availability
of precision X-ray optics and spectrometers as onboard
the Chandra X-ray Observatory, scattering halos around
bright X-ray sources and K/L shell X-ray absorption are
now observed and masured in detail. This presentation
summarizes the progress made so far in the determination
of K/L shell edge fine structures from elements such as
C, N, O, Ne, Mg, Si, and Fe. The edge structures and
line ebsorptions contain valuable information about
the cold, warm, and hot phases of the ISM, dust depletions
and velocity dispersions.
Author
Norbert S. Schulz
(MIT)