CMB-HD: An Ultra-Deep, High-Resolution Millimeter-Wave Survey Over Half the Sky

• DOI: 10.48550/arxiv.1906.10134
• Publication Date: 2019-01-01
• Authors: Neelima Sehgal; Simone Aiola; Y. Akrami; Kaustuv Basu; Michael Boylan-Ko...; Sean Bryan; Sébastien Clesse; Francis-Yan Cyr-R...; Luca Di Mascolo; Simon Dicker; Thomas Essinger-H...; Simone Ferraro; George M. Fuller; Dongwon Han; Mathew Hasselfield; G. P. Holder; Bhuvnesh Jain; Bradley R. Johnson; Matthew C. Johnson; Pamela Klaassen; Mathew S. Madhava...; P. Mauskopf; P. Daniel Meerburg; Joel Meyers; Tony Mroczkowski; Moritz Münchmeyer; Sigurd Næss; Daisuke Nagai; Toshiya Namikawa; Laura Newburgh; Hồ Nam Nguyễn; Michael D. Niemack; Benjamin D. Oppen...; E. Pierpaoli; Emmanuel Schaan; Anže Slosar; David N. Spergel; Eric R. Switzer; Alexander van Eng...; Edward J. Wollack
• Keywords: noise; Cosmology and Nongalactic Astrophysics (astro-ph.CO); astro-ph.GA; kinetic; FOS: Physical sciences; gamma ray: burst; 01 natural sciences; 7. Clean energy; dark matter; microwaves: background; High Energy Physics - Phenomenology (hep-ph); gravitation: lens; pixel; 0103 physical sciences; cloud; cluster; formation; resolution; hep-ph; solar system; Astrophysics - Astrophysics of Galaxies; inflation: model; High Energy Physics - Phenomenology; 13. Climate action; Astrophysics of Galaxies (astro-ph.GA); gas: density; astro-ph.CO; Sunyaev-Zel'dovich effect; galaxy; gas: pressure; [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]; Astrophysics - Cosmology and Nongalactic Astrophysics

A millimeter-wave survey over half the sky, that spans frequencies in range of 30 to 350 GHz, and is both an order magnitude deeper higher-resolution than currently funded surveys would yield enormous gain understanding fundamental physics astrophysics. By providing such a deep, high-resolution (about 0.5 uK-arcmin noise 15 arcsecond resolution at 150 GHz), CMB-HD will enable major advances. It allow 1) use gravitational lensing primordial microwave background map distribution matter on small scales (k~10/hMpc), which probes dark particle properties. also 2) measurements thermal kinetic Sunyaev-Zel'dovich effects gas density pressure profiles halos wide field, galaxy evolution cluster In addition, us cross critical thresholds physics: 3) ruling out or detecting any new, light (< 0.1eV), particles, could potentially be matter, 4) testing class multi-field models explain epoch inflation early Universe. Such 5) monitor transient sky by mapping full observing region every few days, opens new window gamma-ray bursts, novae, fast radio variable active galactic nuclei. Moreover, 6) provide census planets, dwarf asteroids outer Solar System, 7) detection exo-Oort clouds around other solar systems, shedding planet formation. deliver this 5 years using two 30-meter-class off-axis cross-Dragone telescopes located Cerro Toco Atacama Desert. The field about 2.4 million detectors (600,000 pixels) total.