Probing the Interstellar Medium: X-Ray Absorption at Iron and Oxygen with GX 349+2

Details Probing the Interstellar Medium: X-Ray Absorption at Iron and Oxygen with GX 349+2 Probing the Interstellar Medium: X-Ray Absorption at Iron and Oxygen with GX 349+2

Sep 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001cxo..prop.1032c&link_type=abstract

Chandra Proposal ID #03910054

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Chandra Proposal Id #03910054

Scientific paper

Photoelectic absorption of X-rays in neutral matter was based on atomic absorption cross sections derived from optical constants which were largely adequate to describe K-edge structure. Recent observations with Chandra in at first glace fully compliant very recent laboratory measurements found significant narrow structures in the Fe L, which clearly show that the currently in use Henke optical contants are inadequat to descibe Fe L absorption, but also indicate mixing with other molecular components. The latter is very much evident at O-edges as well. We propose a high resolution survey of GX 349+2 to probe absoption in the Fe and O region.

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