High Resolution X-ray Spectroscopy with Constellation-X

Details High Resolution X-ray Spectroscopy with Constellation-X High Resolution X-ray Spectroscopy with Constellation-X

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aas...207.1609s&link_type=abstract

American Astronomical Society Meeting 207, #16.09; Bulletin of the American Astronomical Society, Vol. 37, p.1179

Astronomy and Astrophysics

Astronomy

Scientific paper

High resolution X-ray spectroscopy is crucial to studying the warm absorber in AGN outflows, as evidenced by the dynamical structure seen in high quality UV data. Partial covering of the central emission source by the outflowing gas plays a critical role in UV line formation, and may be important in the X-ray absorber. We have studied the best X-ray data set of an AGN outflow, the Chandra 900 kilosecond observation of NGC 3783, for the effects of covering factor in the strongly saturated line series of Ne X and O VII. Due to the limited resolution and signal to noise around 1 keV, it is difficult to determine a correct model for absorption line formation. Simulations show a resolution of 3000 is necessary to do this. The reflection grating spectrometer onboard the future Constellation X mission can accomplish such resolution, however the off-plane mount is needed. Current studies of the off-plane look promising, with test gratings achieving high throughput and resolution.

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