Revisited "Cluster-Cluster" VLBI with future multi-beam low frequency radio interferometers
M. J. Rioja, R. Dodson, R. W. Porcas, D. Ferris, J. Reynolds, T. Sasao, R. T. Schilizzi
备注：
6 pages, 2 figures, presented at "Science and Technology of Long Baseline Real-Time Interferometry: The 8th International e-VLBI Workshop - EXPReS09" Madrid, Spain June 22-26, 2009. To be published in Proceedings of Science (PoS)
We revisit the "Cluster-Cluster" or multi-view Very-Long-Baseline-Interferometry (VLBI) technique from the perspective of its synergy with the multi-beam features inherent in the Australian Square Kilometer Array Pathfinder (ASKAP)and its potential to improve the outcomes of VLBI observations with ASKAP. We include a list of candidate VLBI sites that already support or can be upgraded to support multi-view VLBI located in Australia and overseas, and which have common visibility with ASKAP. The results of our previous "cluster-cluster" observations at 1.6 GHz demonstrated the advantages of this configuration to calibrate the ionospheric distortions responsible for the loss of positional accuracy at low frequencies, using multiple calibrators in a range between 1 to 6 degrees away from the target. Therefore, we conclude that joint observations of ASKAP with other multi-view sites using "cluster-cluster" techniques would improve the outcomes of the high spatial resolution component of ASKAP applied to astrometric projects, achieving higher precision for many more targets, and with lower detection thresholds. Also very wide-field VLBI mapping becomes a possibility. Looking to the future, this would contribute to the development of new techniques that are relevant for future high resolution observations with the SKA.
The Capella Program: Toward A Space-only High-frequency Radio VLBI Network Formed by Small Satellites in Low Earth Orbits
Seoul National University（首尔大学）；Korea Astronomy and Space Science Institute（韩国天体物理与空间科学研究所）；Max Planck Institute for Radio Astronomy（马克斯·普朗克射电天文研究所）；University of Science and Technology（科学技术联合大学院大学）；SpaceBeam Inc.（SpaceBeam公司）；LeO Space Inc.（LeO Space公司）；Hanbat National University（韩南国立大学）；Joint Institute for VLBI ERIC（甚长基线干涉测量欧洲研究基础设施联合体）；Ulsan National Institute of Science and Technology（蔚山科学技术院）；Kyung Hee University（庆熙大学）；Sejong University（世宗大学）
Development of a Photonically Generated Frequency Reference for Space VLBI
Massachusetts Institute of Technology（麻省理工学院）；University of Maryland, Baltimore County（马里兰大学巴尔的摩县分校）；NASA Goddard Space Flight Center（美国宇航局戈达德太空飞行中心）；Center for Research and Exploration in Space Science and Technology, NASA/GSFC（NASA/GSFC空间科学与技术研究探索中心）；University of Arizona（亚利桑那大学）；Vescent Technologies（Vescent科技公司）
Molecular absorption lines toward the Galactic ISM detected at 89 GHz with VLBI
Graduate School of Science and Engineering, Kagoshima University（鹿儿岛大学理工学研究科）；Nobeyama Radio Observatory, National Astronomical Observatory of Japan (NAOJ), National Institutes of Natural Sciences (NINS)（日本国立天文台野边山射电天文台，日本国立自然科学研究所）；Amanogawa Galaxy Astronomy Research Center, Graduate School of Science and Engineering, Kagoshima University（鹿儿岛大学理工学研究科银河天文学研究中心）；Center for General Education, Institute for Comprehensive Education, Kagoshima University（鹿儿岛大学综合教育院通识教育中心）；Korea Astronomy and Space Science Institute（韩国天体宇宙科学研究所）
Development of the Phase-up Technology of the Radio Telescopes: 6.7 GHz Methanol Maser Observations with Phased Hitachi 32 m and Takahagi 32 m Radio Telescopes
High-frequency water megamasers as precision probes of black holes, galaxies and cosmology: A case for a next-generation sub-mm/mm interferometer
New York University Abu Dhabi（阿布扎比纽约大学）；ASTRON, Netherlands Institute for Radio Astronomy（荷兰射电天文研究所）；Black Hole Initiative, Harvard University（哈佛大学黑洞倡议项目）；European Southern Observatory (ESO)（欧洲南方天文台）；University of Geneva（日内瓦大学）；National Sun Yat-Sen University（国立中山大学）；Bucknell University（巴克内尔大学）；Toyo University（东洋大学）；Institute of Astronomy and Astrophysics, Academia Sinica（中央研究院天文及天文物理研究所）；National Radio Astronomy Observatory（美国国家射电天文台）
