非常长基线干扰测量空间观测站计划的概述和初步结果
H Hirabayashi1, H Hirosawa, H Kobayashi
1H. 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.
概括
通信和天文学高级实验室 (HALCA) 卫星和非常长基线干扰测量 (VLBI) 空间观测计划 (VSOP) 提供银河系外无线电源的高分辨率图像. 这些观测揭示了类星体核心大小,亮度温度和喷气组件运动.
科学领域:
- 天文学 天文学
- 天体物理学 天体物理学
- 无线电天文学 无线电天文学
背景情况:
- 银河系外的射电源,如类星体,在百万弧秒尺度上表现出复杂的结构.
- 了解这些结构对于研究相对论喷流和活跃星系核等现象至关重要.
研究的目的:
- 介绍和讨论非常长基线干扰测量 (VLBI) 空间观测计划 (VSOP) 特定银河系外无线电源的图像.
- 为了确定类星体的核心大小和亮度温度.
- 为了研究星核心附近的喷气组件的运动.
主要方法:
- 使用高度先进的通信和天文学实验室 (HALCA) 卫星与地面射电望远镜一起使用.
- 在1.6和5千兆赫兹进行非常长基线干扰测量 (VLBI) 观测.
- 分析精选无线电类星体的高角分辨率图像.
主要成果:
- 获得了马射线源1156+295,类星体1548+056,超光类星体0014+813和超光类星体0212+735的VSOP图像.
- 这些无线电类星体的百万弧秒尺度结构得到了解决.
- 数据允许确定类星体核心大小和亮度温度.
结论:
- 该VSOP程序提供了关键数据,以了解银河系外无线电源的详细结构.
- 高角分辨率成像使得能够研究喷射动力学和活跃星系核的特性.
- 呈现的类星体图像有助于我们对相对论喷流及其演变的了解.
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