The Hydrogen Intensity and Real-time Analysis eXperiment: 256-Element Array Status and Overview
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, 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 over 15,000 square degrees of the southern sky. The statistical power of such a survey is sufficient to produce 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.
Cite
@article{arxiv.2109.13755,
title = {The Hydrogen Intensity and Real-time Analysis eXperiment: 256-Element Array Status and Overview},
author = {Devin Crichton and Moumita Aich and Adam Amara and Kevin Bandura and Bruce A. Bassett and Carlos Bengaly and Pascale Berner and Shruti Bhatporia and Martin Bucher and Tzu-Ching Chang and H. Cynthia Chiang and Jean-Francois Cliche and Carolyn Crichton and Romeel Dave and Dirk I. L. de Villiers and Matt A. Dobbs and Aaron M. Ewall-Wice and Scott Eyono and Christopher Finlay and Sindhu Gaddam and Ken Ganga and Kevin G. Gayley and Kit Gerodias and Tim Gibbon and Austin Gumba and Neeraj Gupta and Maile Harris and Heiko Heilgendorf and Matt Hilton and Adam D. Hincks and Pascal Hitz and Mona Jalilvand and Roufurd Julie and Zahra Kader and Joseph Kania and Dionysios Karagiannis and Aris Karastergiou and Kabelo Kesebonye and Piyanat Kittiwisit and Jean-Paul Kneib and Kenda Knowles and Emily R. Kuhn and Martin Kunz and Roy Maartens and Vincent MacKay and Stuart MacPherson and Christian Monstein and Kavilan Moodley and V. Mugundhan and Warren Naidoo and Arun Naidu and Laura B. Newburgh and Viraj Nistane and Amanda Di Nitto and Deniz Ölçek and Xinyu Pan and Sourabh Paul and Jeffrey B. Peterson and Elizabeth Pieters and Carla Pieterse and Aritha Pillay and Anna R. Polish and Liantsoa Randrianjanahary and Alexandre Refregier and Andre Renard and Edwin Retana-Montenegro and Ian H. Rout and Cyndie Russeeawon and Alireza Vafaei Sadr and Benjamin R. B. Saliwanchik and Ajith Sampath and Pranav Sanghavi and Mario G. Santos and Onkabetse Sengate and J. Richard Shaw and Jonathan L. Sievers and Oleg M. Smirnov and Kendrick M. Smith and Ulrich Armel Mbou Sob and Raghunathan Srianand and Pieter Stronkhorst and Dhaneshwar D. Sunder and Simon Tartakovsky and Russ Taylor and Peter Timbie and Emma E. Tolley and Junaid Townsend and Will Tyndall and Cornelius Ungerer and Jacques van Dyk and Gary van Vuuren and Keith Vanderlinde and Thierry Viant and Anthony Walters and Jingying Wang and Amanda Weltman and Patrick Woudt and Dallas Wulf and Anatoly Zavyalov and Zheng Zhang},
journal= {arXiv preprint arXiv:2109.13755},
year = {2022}
}
Comments
24 pages, 6 figures. Updated to match published version