Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005hia....13..618l&link_type=abstract
Highlights of Astronomy, Vol. 13, as presented at the XXVth General Assembly of the IAU - 2003 [Sydney, Australia, 13 - 26 July
Astronomy and Astrophysics
Astronomy
Scientific paper
High resolution X-ray spectra from the Chandra and XMM-Newton grating spectrometers provide a powerful new tool for probing the environments of astrophysical systems at a level of detail not previously possible. Emission and absorption features reveal the dynamics and ionization states of plasmas in intervening and local material and the properties of winds and flows. I will illustrate the spectral and spatial capabilities of Chandra via highlights of HETGS results ranging from accretions systems jet structure and the intergalactic medium to Doppler velocity maps of supernova remnants. In addition I will show that the discoveries of (1) moderate ionization inner shell excitations lines such as O VI OV and the unresolved transition array of Fe and (2) dust features in the form of XAFS and FeL absorption demonstrate that the overlap between astrophysics and atomic physics is stronger than ever as the detections of new lines and edge structure are calling for more detailed laboratory measurements and theoretical calculations.
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