Direct determination of astronomical distances and proper motions by interferometric parallax
Direct determination of astronomical distances and proper motions by interferometric parallax
复制标题
通过干涉视差直接确定天文距离和自行
DOI：
10.1051/0004-6361:20078669
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发表时间：
2006
影响因子：
6.5
通讯作者：
J. Ralston
中科院分区：
文献类型：
--
作者：
P. Jain;J. Ralston
目标。本文讨论了一种新的测量天体距离及其横向固有速度的方法。方法.干涉视差的现象确定了2点和4点振幅的分量，以及可以在从无线电到光学的频率范围内观察到的强度相关性。该计算取决于在货车Cittert-Zernicke定理中通常被忽略的取决于源到接收器分离的项。结果数量级估计发现，地球上VLBI系统的基线可能能够测量10 - 100 kpc的距离尺度。在光学或无线电领域，具有精密基线控制的空间探测器可分辨千兆秒差距量级的源距离。我们讨论的可能性，一个独立的距离阶梯直接基于实验测量可能会构建在多个尺度上。
Aims. We discuss a new method for measuring the distances to astronomical objects and their transverse proper velocities. Methods. The phenomenon of interferometric parallax identifies a component of 2- and 4-point amplitude and the intensity correlations that can be observed at frequencies ranging from radio to optical. The calculation hinges on terms depending on the source to receiver separation that are conventionally neglected in the Van Cittert-Zernicke theorem. Results. Order of magnitude estimates find that the baselines of Earth-bound VLBI systems might be capable of measuring 10−100 kpc distance scales. In either the optical or radio regime, space-borne detectors with fine baseline control might resolve source distances of Gigaparsec order. We discuss the possibility that an independent distance ladder based directly on experimental measurement might be constructed on multiple scales.
DOI：
10.1086/378089
发表时间：
2003-02
期刊：
The Astrophysical Journal
影响因子：
--
作者：
Richard Dodson;D. Legge;John E. Reynolds;P. McCulloch
通讯作者：
Richard Dodson;D. Legge;John E. Reynolds;P. McCulloch
DOI：
10.1086/502962
发表时间：
2005-12
期刊：
The Astrophysical Journal
影响因子：
--
作者：
K. Hachisuka;K. Hachisuka;A. Brunthaler;A. Brunthaler;K. Menten;Mark J. Reid;H. Imai;Yoshiaki Hagiwara
通讯作者：
K. Hachisuka;K. Hachisuka;A. Brunthaler;A. Brunthaler;K. Menten;Mark J. Reid;H. Imai;Yoshiaki Hagiwara