Dichroic Filters For Astronomical X-Ray Polarimetry

Details Dichroic Filters For Astronomical X-Ray Polarimetry Dichroic Filters For Astronomical X-Ray Polarimetry

Feb 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006exa....21....1b&link_type=abstract

Experimental Astronomy, Volume 21, Issue 1, pp.1-12

Astronomy and Astrophysics

Astronomy

2

Instrumentation, X-Ray Polarimetry, X-Ray Dichroism

Scientific paper

We describe a programme of research to investigate materials which exhibit linear dichroism at X-ray wavelengths, and to assess their potential as astronomical X-ray polarimeters. The availability of polarising filters for X-rays would offer an efficient method of quantifying the polarisation of X-ray radiation from distant, cosmic sources. A polarising dichroic filter is expected to be a compact, low mass device which could add polarimetry capability to an instrument by being introduced into the optical path ahead of a detector. We provide estimates of sensitivity in the context of the proposed XEUS observatory, which compare favourably with those for the most promising alternative technology. We also discuss a number of astrophysical sources which are suited to polarimetric study at discrete energies offered by the X-ray dichroic filter design.

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