CMB Anisotropies from Outflows in Lyman Break Galaxies

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 $\sim 1\mu$K, comparable to the level produced during the epoch of reionization.

5 pages, 2 figures; to be submitted to MNRAS

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• Simulations of the Sunyaev-Zeldovich Effect from Quasars
• The Sunyaev-Zeldovich Effect from Quasar Feedback
• Light-Cone Distortion of the Clustering and Abundance of Massive Galaxies at High-Redshifts
• Correlation of supernova redshifts with temperature fluctuations of the Cosmic Microwave Background
• Sunyaev-Zel'dovich Signal from Quasar Hosts: Implications for Detection of Quasar Feedback
• The Sunyaev-Zel'dovich effect due to hyper-starburst galaxy winds