2006/09/14 by Daniel Babich, Abraham Loeb · 1 citation
Physics and Astronomy · #Anisotropy #Astronomy #Astrophysics #Astrophysics and Cosmic Phenomena #Cosmic microwave background #Galaxies: Formation, Evolution, Phenomena #Galaxy #Outflow #Physics #Quasar #Radio Astronomy Observations and Technology #Redshift #Reionization #astro-ph
paper · pdf · doi:10.1111/j.1745-3933.2006.00257.x
published as Mon.Not.Roy.Astron.Soc.Lett. 374 (2007) L24-L28 · 5 pages, 2 figures; to be submitted to MNRAS
arxiv created 2006/09/14 · openalex publication_date 2006/11/16 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Abstract Thomson scattering of the cosmic microwave background (CMB) on moving electrons in the outflows of Lyman break galaxies (LBGs) at redshifts 2–8 contributes to the small-scale CMB anisotropies. The net effect produced by each outflow depends on its level of deviation from spherical symmetry, caused either by an anisotropic energy injection from the nuclear starburst or quasar activity, or by an inhomogeneous intergalactic environment. We find that for plausible outflow parameters consistent with spectroscopic observations of LBGs, the induced CMB anisotropies on arcminute scales reach up to ∼1 μK, comparable to the level produced during the epoch of reionization.