甚长基线干涉测量空间天文台计划概述及初步成果

Overview and initial results of the very long baseline interferometry space observatory programme.

作者信息

Hirabayashi H, Hirosawa H, Kobayashi H, Murata Y, Edwards P G, Fomalont E B, Fujisawa K, Ichikawa T, Kii T, Lovell J E J, Moellenbrock G A, Okayasu R, Inoue M, Kawaguchi N, Kameno S, Shibata K M, Asaki Y, Bushimata T, Enome S, Horiuchi S, Miyaji T, Umemoto T, Migenes V, Wajima K, Nakajima J, Morimoto M, Ellis J, Meier D L, Murphy D W, Preston R A, Smith J G, Tingay S J, Traub D L, Wietfeldt R D, Benson J M, Claussen M J, Flatters C, Romney J D, Ulvestad J S, D’Addario L R, Langston G I, Minter A H, Carlson B R, Dewdney P E, Jauncey D L, Reynold J E, Taylor A R, McCulloch P M, Cannon W H, Gurvits L I, Mioduszewski A J, Schilizzi R T, Booth R S

机构信息

H. Hirabayashi, H. Hirosawa, H. Kobayashi, Y. Murata, P. G. Edwards, E. B. Fomalont, K. Fujisawa, T. Ichikawa, T. Kii, J. E. J. Lovell, G. A. Moellenbrock, and R. Okayasu are with the Institute of Space and Astronautical Science, Sagamihara, Kanagawa 22.

出版信息

Science. 1998 Sep 18;281(5384):1825-9. doi: 10.1126/science.281.5384.1825.

DOI:10.1126/science.281.5384.1825

PMID:9743489

Abstract

High angular resolution images of extragalactic radio sources are being made with the Highly Advanced Laboratory for Communications and Astronomy (HALCA) satellite and ground-based radio telescopes as part of the Very Long Baseline Interferometry (VLBI) Space Observatory Programme (VSOP). VSOP observations at 1.6 and 5 gigahertz of the milli-arc-second-scale structure of radio quasars enable the quasar core size and the corresponding brightness temperature to be determined, and they enable the motions of jet components that are close to the core to be studied. Here, VSOP images of the gamma-ray source 1156+295, the quasar 1548+056, the ultraluminous quasar 0014+813, and the superluminal quasar 0212+735 are presented and discussed.

摘要

作为甚长基线干涉测量（VLBI）空间天文台计划（VSOP）的一部分，正在利用高度先进的通信与天文学实验室（HALCA）卫星和地面射电望远镜制作河外射电源的高角分辨率图像。VSOP在1.6吉赫兹和5吉赫兹对射电类星体毫角秒尺度结构进行的观测，能够确定类星体核心尺寸及相应的亮度温度，还能研究靠近核心的喷流成分的运动。本文展示并讨论了伽马射线源1156+295、类星体1548+056、超亮类星体0014+813和超光速类星体0212+735的VSOP图像。