2003/08/31 by Pengjie Zhang · 1 citation
Physics and Astronomy · #Astronomy #Astrophysics #Astrophysics and Cosmic Phenomena #Cluster (spacecraft) #Computational physics #Cosmic background radiation #Cosmic microwave background #Cosmology #Dark energy #Galaxies: Formation, Evolution, Phenomena #Galaxy #Galaxy cluster #Magnetic field #Observational cosmology #Optics #Physics #Polarization (electrochemistry) #Radiative transfer #Radio Astronomy Observations and Technology #Sky #South Pole Telescope #Spectral density #Sunyaev–Zel'dovich effect #astro-ph
paper · pdf · doi:10.1111/j.1365-2966.2004.07460.x
published as Mon.Not.Roy.Astron.Soc.348:1348,2004 · 8 pages, 7 figures. Revised version accepted by MNRAS
arxiv created 2003/11/26 · openalex publication_date 2004/03/01 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Precision measurements of the Sunyaev–Zel'dovich (SZ) effect in upcoming blank sky surveys require theoretical understanding of all physical processes with ≳10 per cent effects on the SZ power spectrum. We show that the observed cluster magnetic field could reduce the SZ power spectrum by ∼20 per cent at l∼ 4000, where the SZ power spectrum will be precisely measured by the Sunyaev–Zel'dovich array (SZA) and the Atacama Cosmology Telescope (ACT). At smaller scale, this effect is larger and could reach a factor of several. Such an effect must be considered for an unbiased interpretation of the SZ data. Although the magnetic effect on the SZ power spectrum is very similar to that of radiative cooling, it is measurable by multiband cosmic microwave background polarization measurement.