Japan JSPS Program: Space Very-Long-Baseline Interferometrywith the HALCA Satellite and the VSOP Mission Program

日本 JSPS 计划：利用 HALCA 卫星进行空间甚长基线干涉测量和 VSOP 任务计划

• 批准号: 9802463
• 负责人: Ian Avruch
• 金额: $ 0.3万
• 依托单位: Fellowships
• 依托单位国家: 美国
• 项目类别: Fellowship Award
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-09-01 至 1999-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9802463&HistoricalAwards=false
• 关键词: Japan; JSPS; Program; Space; Very

Avruch 9802463 This award supports a 12 month Japan Society for the Promotion of Science (JSPS) Postdoctoral Fellowship for Dr. Ian Avruch at the Institute of Space and Astronautical Science (ISAS), Sagamihara, Japan. Dr. Avruch will work with Dr. Hirabayashi, VSOP Mission Project Scientist, ISAS, on a research project entitled, "Space Very-Long-Baseline Interferometry with the HALCA Satellite and the VSOP Program." The proposed research project will make use of a new capability in radio astronomy, the HALCA satellite, a project of ISAS with significant participation by NASA. The general scientific goals of the mission include performing the highest resolution observations of the cores of Active Galactic Nuclei (AGN), monitoring superluminal structures in AGN, and determining distances to galaxies by the motions of their water masers. The established technique of Very-Long- Baseline Interferometry employs fixed radio telescopes around the earth observing a celestial object simultaneously, each writing data to high density storage media. Interferometric baselines as long as an earth diameter can be formed when the data are brought together and reduced appropriately; the angular resolution on the sky approaches that of an equivalent single antenna the size of the earth. The HALCA satellite is an orbiting radio telescope that extends baselines up to three earth radii, for a resolution of 55 microarcseconds. ***

Avruch 9802463该奖项支持日本科学促进会(JSPS)为日本相模原市空间与航天科学研究所(IAS)的Ian Avruch博士提供为期12个月的博士后奖学金。Avruch博士将与VSOP任务项目科学家Hirabayashi博士合作开展一项名为“HALCA卫星和VSOP计划的空间甚长基线干涉测量”的研究项目。拟议的研究项目将利用射电天文学的一种新能力--HALCA卫星，这是国际空间科学协会的一个项目，美国国家航空航天局有大量参与。这项任务的总体科学目标包括对活动星系核(AGN)的核心进行最高分辨率的观测，监测AGN的超光速结构，并通过星系水脉泽的运动确定到星系的距离。已建立的甚长基线干涉测量技术使用地球周围的固定射电望远镜同时观测一个天体，每个望远镜将数据写入高密度存储介质。只要将数据合并并适当缩减，就可以形成地球直径的干涉基线；天空中的角分辨率接近地球大小的等效单天线的分辨率。HALCA卫星是一个轨道射电望远镜，它将基线延伸到地球半径3圈，分辨率为55微弧秒。***