Tilted Physics: A Cosmologically Dipole-Modulated Sky

Details Tilted Physics: A Cosmologically Dipole-Modulated Sky Tilted Physics: A Cosmologically Dipole-Modulated Sky

2010-11-12

arxiv.org/abs/1011.2990v1

Phys.Rev.D84:023014,2011

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

4 pages, 3 figures

Scientific paper

10.1103/PhysRevD.84.023014

Physical constants and cosmological parameters could vary with position. On the largest scales such variations would manifest themselves as gradients across our Hubble volume, leading to dipole-modulation of the cosmic microwave anisotropies. This generically leads to a correlation between adjacent multipoles in the spherical harmonics expansion of the sky, a distinctive signal which should be searched for in future data sets.

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