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Proceedings Paper

Soft x-ray polarimetry with the REDSoX Polarimeter and beyond (Conference Presentation)
Author(s): Herman L. Marshall; Alan Garner; Sarah N. Heine; Norbert S. Schulz; Ralf K. Heilmann; Brian Ramsey; David L. Windt

Paper Abstract

The Rocket Experiment Demonstration of a Soft X-ray Polarimeter (REDSoX Polarimeter) is a sounding rocket instrument that can make the first measurement of the linear X-ray polarization of an extragalactic source in the 0.2-0.5 keV band as low as 10%. We employ multilayer-coated mirrors as Bragg reflectors at the Brewster angle. By matching the dispersion of a dispersive spectrometer using critical angle transmission gratings to three laterally graded multilayer mirrors (LGMLs), we achieve polarization modulation factors over 90%. We will describe new prototyping work as well as extensions of the design for an orbital version. This work was supported in part by NASA grants NNX15AL14G and NNX17AE11G to develop the design for a soft X-ray polarimeter.

Paper Details

Date Published: 9 September 2019
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Proc. SPIE 11118, UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XXI, 111180A (9 September 2019);
Show Author Affiliations
Herman L. Marshall, MIT Kavli Institute for Astrophysics and Space Research (United States)
Alan Garner, MIT Kavli Institute for Astrophysics and Space Research (United States)
Sarah N. Heine, MIT Kavli Institute for Astrophysics and Space Research (United States)
Norbert S. Schulz, MIT Kavli Institute for Astrophysics and Space Research (United States)
Ralf K. Heilmann, MIT Kavli Institute for Astrophysics and Space Research (United States)
Brian Ramsey, NASA Marshall Space Flight Ctr. (United States)
David L. Windt, Reflective X-Ray Optics LLC (United States)


Published in SPIE Proceedings Vol. 11118:
UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XXI
Oswald H. Siegmund, Editor(s)

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