Synchrotron Emission on the Largest Scales: Radio Detection of the Cosmic-Web
Shea Brown
TL;DR
This paper discusses the potential for detecting the faint, large-scale synchrotron emission from the cosmic web, generated by shocks and turbulence during structure formation, using upcoming SKA radio telescopes.
Contribution
It evaluates the observational prospects and challenges for detecting the synchrotron cosmic web with future radio surveys.
Findings
Synchrotron emission is correlated with thermal baryon distribution.
Detection of the cosmic web's synchrotron emission is feasible with SKA pathfinders.
Challenges include low surface brightness and instrumental sensitivity.
Abstract
Shocks and turbulence generated during large-scale structure formation are predicted to produce large-scale, low surface-brightness synchrotron emission. On the largest scales, this emission is globally correlated with the thermal baryon distribution, and constitutes the "Synchrotron Cosmic- Web". I present the observational prospects and challenges for detecting this faint emission with upcoming SKA pathfinders.
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