Cosmic dawn and reionization: Astrophysics in the final frontier

Asantha Cooray, James Aguirre, Yacine Ali-Haimoud, Marcelo Alvarez, Phil Appleton, Lee Armus, George Becker, Jamie Bock, Rebecca Bowler, Judd Bowman, Matt Bradford, Patrick Breysse, Volker Bromm, Jack Burns, Karina Caputi, Marco Castellano, Tzu Ching Chang, Ranga Chary, Hsin Chiang, Joanne CohnChris Conselice, Jean Gabriel Cuby, Frederick Davies, Pratika Dayal, Olivier Dore, Duncan Farrah, Andrea Ferrara, Steven Finkelstein, Steven Furlanetto, Bryna Hazelton, Caroline Heneka, Anne Hutter, Daniel Jacobs, Leon Koopmans, Ely Kovetz, Paul La Piante, Olivier Le Fevre, Adrian Liu, Jingzhe Ma, Yin Zhe Ma, Sangeeta Malhotra, Yi Mao, Dan Marrone, Kiyoshi Masui, Matthew McQuinn, Jordan Mirocha, Daniel Mortlock, Eric Murphy, Hooshang Nayyeri, Priya Natarajan, Thyagarajan Nithyanandan, Aaron Parsons, Roser Pello, Alexandra Pope, James Rhoads, Jason Rhodes, Dominik Riechers, Brant Robertson, Claudia Scarlata, Stephen Serjeant, Benjamin Saliwanchik, Ruben Salvaterra, Rafffaella Schneider, Marta Silva, Martin Sahlén, Mario G. Santos, Eric Switzer, Pasquale Temi, Hy Trac, Aparna Venkatesan, Eli Visbal, Matias Zaldarriaga, Michael Zemcov, Zheng Zheng

Research output: Contribution to journalArticlepeer-review


The cosmic dawn and epoch of reionization mark the time period in the universe when stars, galaxies, and blackhole seeds first formed and the intergalactic medium changed from neutral to an ionized one. Despite substantial progress with multi-wavelength observations, astrophysical process during this time period remain some of the least understood with large uncertainties on our existing models of galaxy, blackhole, and structure formation. This white paper outlines the current state of knowledge and anticipated scientific outcomes with ground and space-based astronomical facilities in the 2020s. We then propose a number of scientific goals and objectives for new facilities in late 2020s to mid 2030s that will lead to definitive measurements of key astrophysical processes in the epoch of reionization and cosmic dawn.

Original languageEnglish (US)
JournalUnknown Journal
StatePublished - Mar 8 2019

ASJC Scopus subject areas

  • General

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