COMAP早期科学: II. Pathfinder仪器
天体物理仪器与方法
2022-07-20 v3 宇宙学与河外天体物理
星系天体物理
摘要
谱线强度映射(LIM)是一种追踪宇宙时间内星系全局性质的新技术。探测来自红移一氧化碳(CO)(恒星形成示踪体)的极微弱信号,推高了全功率仪器可行性的极限。CO Mapping Project (COMAP) Pathfinder是第一代仪器,旨在证明概念并为未来实验开发技术,同时产出早期科学成果。它在10.4 m天线上采用六边形焦平面排布的19个接收机通道,瞬时频率范围26-34 GHz、分辨率2 MHz,非常适于测量的CO(=1-0)。本文中我们讨论设计和建造Pathfinder的策略及遇到的挑战。仪器设计优先满足LIM需求而非辅助科学需求。经过几年运行,仪器已被充分理解,第一年数据已产生有用的科学结果。该Pathfinder的经验将驱动下一代实验的设计。
引用
@article{arxiv.2111.05928,
title = {COMAP Early Science: II. Pathfinder Instrument},
author = {James W. Lamb and Kieran A. Cleary and David P. Woody and Morgan Catha and Dongwoo T. Chung and Joshua Ott Gundersen and Stuart E. Harper and Andrew I. Harris and Richard Hobbs and Håvard T. Ihle and Jonathon Kocz and Timothy J. Pearson and Liju Philip and Travis W. Powell and Lilian Basoalto and J. Richard Bond and Jowita Borowska and Patrick C. Breysse and Sarah E. Church and Clive Dickinson and Delaney A. Dunne and Hans Kristian Eriksen and Marie Kristine Foss and Todd Gaier and Junhan Kim and Charles R. Lawrence and Jonas G. S. Lunde and Hamsa Padmanabhan and Maren Rasmussen and Anthony C. S. Readhead and Rodrigo Reeves and Thomas J. Rennie and Nils-Ole Stutzer and Duncan J. Watts and Ingunn Kathrine Wehus},
journal= {arXiv preprint arXiv:2111.05928},
year = {2022}
}
备注
Paper 2 of 7 in series. 27 pages, 28 figures, submitted to ApJ