General Relativistic Contribution to Polarization of the Cosmic Microwave Background Anisotropy

Details General Relativistic Contribution to Polarization of the Cosmic Microwave Background Anisotropy General Relativistic Contribution to Polarization of the Cosmic Microwave Background Anisotropy

2000-10-06

arxiv.org/abs/gr-qc/0010022v1

Phys.Rev. D63 (2001) 027301

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

9 pages latex, Accepted for Publication in Phys Rev D

Scientific paper

10.1103/PhysRevD.63.027301

We solve the wave equation for the electromagnetic field tensors associated with the CMBR photons in a universe with scalar metric perturbations. We show that the coupling of the electromagnetic fields with the curvature associated with the scalar perturbations gives rise to an optical rotation of the microwave background photons. The magnitude of the gravitationally generated V-Stokes parameter anisotropy $\Delta_V$, is however very small compared to the linear polarisation caused by Thomson scattering.

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