论文标题
9220活性银河核的parsec-scales射流的方向
Direction of Parsec-Scales Jets for 9220 Active Galactic Nuclei
论文作者
论文摘要
parsec尺度喷射在活性银河核（AGNS）中的方向是许多天体物理和天文学研究的重要信息，包括线性极化和磁场结构，频率依赖性的同步性不透明度，正确的运动和参考框架对准。我们开发了一种严格，简单且完全自动化的方法，用于测量从1.4 GHz至86 GHz的频率校准干涉可见性数据的方向。我们发布了9220 AGN的结果，典型的精度低于10度。比较不同观察频率以及先前出版物之间的方向的方法的内部检查，验证了测量值的鲁棒性。
The direction of parsec-scale jets in active galactic nuclei (AGNs) is essential information for many astrophysical and astrometric studies, including linear polarization and magnetic field structure, frequency-dependent synchrotron opacity, proper motion, and reference frame alignment. We developed a rigorous, simple, and completely automated method to measure the directions from calibrated interferometric visibility data at frequencies ranging from 1.4 GHz to 86 GHz. We publish the results for 9220 AGNs with the typical accuracy below 10 degrees. An internal check of the method comparing the directions between different observing frequencies as well as with previous publications verifies the robustness of the measured values.
