Transfer matrices for magnetized CMB anisotropies

2006/04/02 by Massimo Giovannini · 1 citation
Physics and Astronomy · #Adiabatic process #Anisotropy #Classical mechanics #Cosmic microwave background #Cosmology and Gravitation Theories #Coupling (piping) #Curvature #Decoupling (probability) #Galaxies: Formation, Evolution, Phenomena #Magnetic field #Physics #Quantum electrodynamics #Quantum mechanics #Scalar (mathematics) #Solar and Space Plasma Dynamics #astro-ph #gr-qc #hep-ph

paper · pdf · doi:10.1103/physrevd.73.101302

published as Phys.Rev.D73:101302,2006 · 9 pages

arxiv created 2006/04/02 · openalex publication_date 2006/05/17 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

Large-scale magnetic fields can affect scalar cosmological perturbations whose evolution is described in the conformally Newtonian gauge and within the tight coupling approximation. The magnetized curvature perturbations present after matter-radiation equality (and prior to decoupling) are computed in terms of an appropriate transfer matrix allowing a general estimate of the Sachs-Wolfe plateau. From the observation that CMB initial conditions should be (predominantly) adiabatic, the contribution of the magnetic field intensity can be constrained.

Citations

• Correlated primordial perturbations in light of CMB and large scale structure data
• Magnetic Field Structure and Stochastic Reconnection in a Partially Ionized Gas
• Astrophysical magnetic fields and nonlinear dynamo theory
• Spontaneous creation of almost scale-free density perturbations in an inflationary universe
• Three‐YearWilkinson Microwave Anisotropy Probe(WMAP) Observations: Implications for Cosmology
• Magnetic Field in Clusters of Galaxies

Cited by

• Primordial magnetic field limits from cosmological data