Diffraction-limited astronomical X-ray imaging and X-ray interferometry using normal-incidence multilayer optics

Details Diffraction-limited astronomical X-ray imaging and X-ray interferometry using normal-incidence multilayer optics Diffraction-limited astronomical X-ray imaging and X-ray interferometry using normal-incidence multilayer optics

Mar 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003head....7.2202w&link_type=abstract

American Astronomical Society, HEAD meeting #7, #22.02; Bulletin of the American Astronomical Society, Vol. 35, p.639

Astronomy and Astrophysics

Astronomy

Scientific paper

We describe a new technical approach for observations of Galactic and extra-Galactic soft X-ray sources with ultra-high angular resolution. The technique is based on the use of recently developed (and commercially available) diffraction-limited, normal-incidence mirror substrates, and ultra-short-period multilayer coatings tuned to specific bright emission lines in the range 16-40 A, for the construction of a diffraction-limited X-ray telescope. Sub-milliarcsecond resolution could be achieved in a moderately-sized Cassegrain or prime-focus geometry, while resolution of order 0.01 micro-arcseconds could be achieved using a synthetic aperture X-ray interferometer constructed from an array of such telescopes spread over a 50 km baseline. We will describe the technical approach in detail, outline some of the observations that would become possible with the proposed instrumentation, and discuss possibilities for near-term implementation.
This research is funded in part by a grant from NASA.

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