CMB Temperature Anisotropy from Broken Spatial Isotropy due to an   Homogeneous Cosmological Magnetic Field
  We derive the cosmic microwave background temperature anisotropy two-point correlation function (including off-diagonal correlations) from broken spatial isotropy due to an arbitrarily oriented homogeneous cosmological magnetic field. 
Tina Kahniashvili, George Lavrelashvili, and Bharat Ratra