氢强度与实时分析实验：256单元阵列状态与概览
天体物理仪器与方法
2022-01-19 v2 宇宙学与河外天体物理
摘要
氢强度与实时分析实验（HIRAX）是一台正在研制的射电干涉阵列，其初始 256 单元阵列将部署于南非射电天文观测台（SARAO）的平方公里阵列（SKA）台址。每台 6 米、f/0.23 天线将配备工作在 400-800 MHz 频率范围内的双极化馈源。通过对中性氢 21 cm 发射线的强度映射，HIRAX 将在红移范围 0.775 < z < 2.55 内对约 15000 平方度南天的大尺度结构分布进行宇宙学巡天。当与普朗克卫星的观测结合时，此类巡天的统计能力足以对暗能量状态方程参数给出约 7% 的约束。此外，HIRAX 将为射电暂现源与 HI 吸收体科学提供极具竞争力的平台，同时支持大量交叉相关研究。在本文中，我们描述了实验的科学目标、望远镜系统各子组件的设计与状态概览，并给出了初始 256 单元阵列的预期性能以及计划未来扩展至最终 1024 单元阵列的设想。
引用
@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}
}
备注
24 pages, 6 figures. Updated to match published version