用于南极望远镜的VLBI接收系统
天体物理仪器与方法
2018-06-05 v2
摘要
事件视界望远镜（EHT）是一项甚长基线干涉测量（VLBI）实验，旨在以接近事件视界尺度的角分辨率观测超大质量黑洞。南极在阵列中占据重要位置，极大地增加了其南北向基线范围，从而提高了分辨率。南极望远镜（SPT）是一台直径10米、毫米波段的望远镜，配备用于宇宙微波背景辐射测辐射热观测的设备。为使SPT能够进行VLBI观测，我们构建了一套适用于南极环境的相干信号链。该双频接收机采用了最先进的SIS混频器，并安装在SPT接收机舱内。VLBI信号链还包括一套记录系统以及锁定至氢脉泽的参考频率发生器。在此我们详细描述SPT VLBI系统的设计，并给出实验室测量与天基观测结果。
引用
@article{arxiv.1805.09346,
title = {A VLBI receiving system for the South Pole Telescope},
author = {Junhan Kim and Daniel P. Marrone and Christopher Beaudoin and John E. Carlstrom and Sheperd S. Doeleman and Thomas W. Folkers and David Forbes and Christopher H. Greer and Eugene F. Lauria and Kyle D. Massingill and Evan Mayer and Chi H. Nguyen and George Reiland and Jason SooHoo and Antony A. Stark and Laura Vertatschitsch and Jonathan Weintroub and André Young},
journal= {arXiv preprint arXiv:1805.09346},
year = {2018}
}
备注
14 pages, 11 figures, to appear in the Proceedings of the SPIE (SPIE Astronomical Telescopes + Instrumentation 2018; Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy IX)