1999/11/30 by Karsten Jedamzik, K. Jedamzik, V. Katalinic +3 · 8 citations
Physics and Astronomy · #Anisotropy #Astronomy #Astrophysics #Astrophysics and Cosmic Phenomena #COSMIC cancer database #Cosmic microwave background #Cosmic ray #Cosmology and Gravitation Theories #Limit (mathematics) #Magnetic field #Microwave #Nuclear physics #Physics #Quantum mechanics #Scale (ratio) #Solar and Space Plasma Dynamics #astro-ph #hep-ph
paper · pdf · doi:10.1103/physrevlett.85.700
published as Phys.Rev.Lett. 85 (2000) 700-703 · 5 pages, accepted by Physical Review Letters
arxiv created 2000/06/30 · openalex publication_date 2000/07/24 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Spatially varying primordial magnetic fields may be efficiently dissipated prior to the epoch of recombination due to the large viscosity of the baryon-photon fluid. We show that this dissipation may result in observable chemical potential &mgr; and Compton y distortions in the cosmic microwave background spectrum. Current upper limits on &mgr; and y from FIRAS constrain magnetic fields to have strength B0<3x10(-8) G (scaled to the present) between comoving coherence length approximately 400 pc and approximately 0.6 Mpc. These represent the strongest upper limits on small-scale primordial magnetic fields to date.