Expansion of the Berkeley-Illinois-Maryland Array (BIMA)

这笔赠款将使增加三个新的毫米波 天线到比马阵列，使天线的总数量 从六点到九点。 增加到9个将提供大量 速度和灵敏度的提高，允许更大的 比马科学家要解决的一系列科学问题 和访客。 一天的观测将产生地图， 多达800个独立像素。 速度是必不可少的， 研究时变现象，如彗星，太阳耀斑， 和星际微波激射器 增加的灵敏度将允许， 例如，遥远星系中的分子线映射。 初始 阵列配置将允许在70-90 GHz，90-116 GHz GHz和210-270 GHz，IF带宽为830 MHz， 谱线相关器，覆盖800 MHz，几乎整个中频 乐队 该系统将具有出色的灵敏度为两条线 和连续性，有效灵敏度与 到世界上主要的单毫米天线。 的 施工时间表将带来完整的九元素阵列 于1992年春天投入运营。

This grant will enable the addition of three new millimeter wave antennas to the BIMA array, bringing the total number of antennas from six to nine. The increase to nine will provide substantial increases in speed and sensitivity, permitting a much greater range of scientific problems to be addressed by BIMA scientists and visitors. A single day's observing will yield maps with as many as 800 independent pixels. The speed is essential for studying time varying phenomena, such as comets, solar flares, and interstellar masers. The added sensitivity will allow, for example, molecular line mapping in distant galaxies. The initial array configuration will allow observations at 70-90 GHz, 90-116 GHz, and 210-270 GHz with an IF bandwidth of 830 MHz and a spectral line correlator that covers 800 MHz, nearly the whole IF band. The system will have excellent sensitivity for both line and continuum, with an effective sensitivity that is comparable to the major single millimeter antennas in the world. The schedule for construction will bring the full nine element array into operation in the spring of 1992.