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gr-qc2021
Polarized Image of Equatorial Emission in the Kerr Geometry
Zachary Gelles, Elizabeth Himwich, Daniel C. M. Palumbo +1
We develop a simple toy model for polarized images of synchrotron emission from an equatorial source around a Kerr black hole by using a semi-analytic solution of the null geodesic…
gr-qc2020
Universal Polarimetric Signatures of the Black Hole Photon Ring
Elizabeth Himwich, Michael D. Johnson, Alexandru Lupsasca +1
Black hole images present an annular region of enhanced brightness. In the absence of propagation effects, this "photon ring" has universal features that are completely governed by…