Theoretical Modeling of an Astronomical X-Ray Interferometer

Details Theoretical Modeling of an Astronomical X-Ray Interferometer Theoretical Modeling of an Astronomical X-Ray Interferometer

Oct 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000head....5.4705g&link_type=abstract

American Astronomical Society, HEAD Meeting #5, #47.05; Bulletin of the American Astronomical Society, Vol. 32, p.1268

Physics

Optics

Scientific paper

A space-based x-ray interferometer has the potential to achieve angular resolution many orders of magnitude better than current x-ray telescopes. The viability of this concept has recently been established by measurements made with a grazing incidence x-ray interferometer in a long-beam test facility. We report on theoretical modeling of a grazing incidence interferometer, which will allow us to specify the tolerances required to construct improved laboratory and space-based instruments. We consider an x-ray interferometer consisting of four 50 mm diameter flat optics located 100 m in front of a CCD detector, illuminated by 1.25 keV x-rays. The required tolerances on the spatial location and angular tilt of the optics are calculated, as well as the effect of mirror surface imperfections on the x-ray fringe pattern.

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