A Roadmap for Astrophysics and Cosmology with High-Redshift 21 cm Intensity Mapping

15 Jul 2019 · Array The Hydrogen Epoch of Reionization HERA, Collaboration, Aguirre James E., Beardsley Adam P., Bernardi Gianni, Bowman Judd D., Bull Philip, Carilli Chris L., Dai Wei-Ming, DeBoer David R., Dillon Joshua S., Ewall-Wice Aaron, Furlanetto Steve R., Gehlot Bharat K., Gorthi Deepthi, Greig Bradley, Hazelton Bryna J., Hewitt Jacqueline N., Jacobs Daniel C., Kern Nicholas S., Kittiwisit Piyanat, Kolopanis Matthew, La Plante Paul, Liu Adrian, Ma Yin-Zhe, Mdlalose Mthokozisi, Mirocha Jordan, Murray Steven G., Parsons Aaron R., Pober Jonathan C., Sims Peter H., Thyagarajan Nithyanandan ·

In this white paper, we lay out a US roadmap for high-redshift 21 cm cosmology (30 < z < 6) in the 2020s. Beginning with the currently-funded HERA and MWA Phase II projects and advancing through the decade with a coordinated program of small-scale instrumentation, software, and analysis projects targeting technology development, this roadmap incorporates our current best understanding of the systematics confronting 21 cm cosmology into a plan for overcoming them, enabling next-generation, mid-scale 21 cm arrays to be proposed late in the decade. Submitted for consideration by the Astro2020 Decadal Survey Program Panel for Radio, Millimeter, and Submillimeter Observations from the Ground as a Medium-Sized Project.

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A Roadmap for Astrophysics and Cosmology with High-Redshift 21 cm Intensity Mapping

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