Cosmic Polarization Rotation: testing the foundations of General Relativity
Sperello Di Serego Alighieri
Observatorio Astrofisico di Arcetri - Firenze
An important reason for searching for Cosmic Polarization Rotation
(CPR), i.e. a rotation in vacuum of the plane of polarization for radiation
travelling across a large fraction of the universe, is that it provides a
test for the Einstein equivalence principle (EEP).
Therefore, a null CPR would increase our confidence on General Relativity
which is based on the EEP. I shall review recent constraints on the CPR,
including those from Planck, which are all consistent with a null CPR, and
discuss future prospects for improving the constraints or detecting CPR.
2017 April 28, 15:00
Observatůrio Astronůmico de Lisboa (Seminar room)
Tapada da Ajuda, 1349-018 Lisboa