학술논문
The Hydrogen Intensity and Real-time Analysis eXperiment: 256-Element Array Status and Overview
Document Type
Working Paper
Author
Crichton, Devin; Aich, Moumita; Amara, Adam; Bandura, Kevin; Bassett, Bruce A.; Bengaly, Carlos; Berner, Pascale; Bhatporia, Shruti; Bucher, Martin; Chang, Tzu-Ching; Chiang, H. Cynthia; Cliche, Jean-Francois; Crichton, Carolyn; Dave, Romeel; de Villiers, Dirk I. L.; Dobbs, Matt A.; Ewall-Wice, Aaron M.; Eyono, Scott; Finlay, Christopher; Gaddam, Sindhu; Ganga, Ken; Gayley, Kevin G.; Gerodias, Kit; Gibbon, Tim; Gumba, Austin; Gupta, Neeraj; Harris, Maile; Heilgendorf, Heiko; Hilton, Matt; Hincks, Adam D.; Hitz, Pascal; Jalilvand, Mona; Julie, Roufurd; Kader, Zahra; Kania, Joseph; Karagiannis, Dionysios; Karastergiou, Aris; Kesebonye, Kabelo; Kittiwisit, Piyanat; Kneib, Jean-Paul; Knowles, Kenda; Kuhn, Emily R.; Kunz, Martin; Maartens, Roy; MacKay, Vincent; MacPherson, Stuart; Monstein, Christian; Moodley, Kavilan; Mugundhan, V.; Naidoo, Warren; Naidu, Arun; Newburgh, Laura B.; Nistane, Viraj; Di Nitto, Amanda; Ölçek, Deniz; Pan, Xinyu; Paul, Sourabh; Peterson, Jeffrey B.; Pieters, Elizabeth; Pieterse, Carla; Pillay, Aritha; Polish, Anna R.; Randrianjanahary, Liantsoa; Refregier, Alexandre; Renard, Andre; Retana-Montenegro, Edwin; Rout, Ian H.; Russeeawon, Cyndie; Sadr, Alireza Vafaei; Saliwanchik, Benjamin R. B.; Sampath, Ajith; Sanghavi, Pranav; Santos, Mario G.; Sengate, Onkabetse; Shaw, J. Richard; Sievers, Jonathan L.; Smirnov, Oleg M.; Smith, Kendrick M.; Sob, Ulrich Armel Mbou; Srianand, Raghunathan; Stronkhorst, Pieter; Sunder, Dhaneshwar D.; Tartakovsky, Simon; Taylor, Russ; Timbie, Peter; Tolley, Emma E.; Townsend, Junaid; Tyndall, Will; Ungerer, Cornelius; van Dyk, Jacques; van Vuuren, Gary; Vanderlinde, Keith; Viant, Thierry; Walters, Anthony; Wang, Jingying; Weltman, Amanda; Woudt, Patrick; Wulf, Dallas; Zavyalov, Anatoly; Zhang, Zheng
Source
J. of Astronomical Telescopes, Instruments, and Systems, 8(1), 011019 (2022)
Subject
Language
Abstract
The Hydrogen Intensity and Real-time Analysis eXperiment (HIRAX) is a radio interferometer array currently in development, with an initial 256-element array to be deployed at the South African Radio Astronomy Observatory (SARAO) Square Kilometer Array (SKA) site in South Africa. Each of the 6m, $f/0.23$ dishes will be instrumented with dual-polarisation feeds operating over a frequency range of 400-800 MHz. Through intensity mapping of the 21 cm emission line of neutral hydrogen, HIRAX will provide a cosmological survey of the distribution of large-scale structure over the redshift range of $0.775 < z < 2.55$ over $\sim$15,000 square degrees of the southern sky. The statistical power of such a survey is sufficient to produce $\sim$7 percent constraints on the dark energy equation of state parameter when combined with measurements from the Planck satellite. Additionally, HIRAX will provide a highly competitive platform for radio transient and HI absorber science while enabling a multitude of cross-correlation studies. In this paper, we describe the science goals of the experiment, overview of the design and status of the sub-components of the telescope system, and describe the expected performance of the initial 256-element array as well as the planned future expansion to the final, 1024-element array.
Comment: 24 pages, 6 figures. Updated to match published version
Comment: 24 pages, 6 figures. Updated to match published version