Tomography of the Cosmic Dawn and Reionization eras with multiple tracers

TC Chang, A Beane, O Dore, A Lidz… - arXiv preprint arXiv …, 2019 - arxiv.org
arXiv preprint arXiv:1903.11744, 2019arxiv.org
The Cosmic Dawn and Reionization epochs remain a fundamental but challenging frontier
of astrophysics and cosmology. We advocate a large-scale, multi-tracer approach to develop
a comprehensive understanding of the physics that led to the formation and evolution of the
first stars and galaxies. We highlight the line intensity mapping technique to trace the multi-
phase reionization topology on large scales, and measure reionization history in detail.
Besides 21cm, we advocate for Lya tomography mapping during the epoch of Wouthuysen …
The Cosmic Dawn and Reionization epochs remain a fundamental but challenging frontier of astrophysics and cosmology. We advocate a large-scale, multi-tracer approach to develop a comprehensive understanding of the physics that led to the formation and evolution of the first stars and galaxies. We highlight the line intensity mapping technique to trace the multi-phase reionization topology on large scales, and measure reionization history in detail. Besides 21cm, we advocate for Lya tomography mapping during the epoch of Wouthuysen-Field coupling as an additional probe of the cosmic dawn era.
arxiv.org