Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981opten..20...31n&link_type=abstract
Optical Engineering, vol. 20, Jan.-Feb. 1981, p. 31-38.
Astronomy and Astrophysics
Astronomy
3
Compton Effect, Optical Polarization, Solar X-Rays, Spaceborne Astronomy, Stellar Spectrophotometry, X Ray Astronomy, Black Holes (Astronomy), Oso-8, Quasars, Solar Activity Effects, Solar Flares, Statistical Analysis, Supernova Remnants
Scientific paper
The theory of Bragg crystal X-ray polarimeters is presented together with an analysis of the statistics of photon-limited polarimeters. The focusing Bragg crystal polarimeter flown on the OSO-8 Satellite is described and a number of results obtained at 2.6 keV and 5.2 keV are presented. A polarimeter of this type with at least ten times the area is needed to answer a number of astrophysically interesting questions. A discussion is given of a Compton scattering polarimeter that is expected to be useful of energies above 40 keV. It is shown how this polarimeter may be used to test for the presence of a black hole in Cyg X-1. A solar flare X-ray polarimeter that is scheduled to be flown on an early space shuttle mission is described and an estimate is given of its sensitivity.
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