Direction of Parsec-scale Jets for 9220 Active Galactic Nuclei

被引：15
作者：
Plavin, A., V [1 ]
Kovalev, Y. Y. [1 ,2 ,3 ]
Pushkarev, A. B. [1 ,4 ]
机构：
[1] Russian Acad Sci, Lebedev Phys Inst, Leninsky Prospekt 53, Moscow 119991, Russia
[2] Moscow Inst Phys & Technol, Inst Sky Per 9, Dolgoprudnyi 141700, Russia
[3] Max Planck Inst Radioastron, Hugel 69, D-53121 Bonn, Germany
[4] Crimean Astrophys Observ, Nauchny 298409, Crimea, Russia
来源：
ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES | 2022年 / 260卷 / 01期
基金：
美国国家航空航天局;
关键词：
VLBA CALIBRATOR SURVEY; EXTRAGALACTIC RADIO-SOURCES; OPTICAL POLARIZATION; RELATIVISTIC JETS; PLANE SURVEY; SUPERLUMINAL MOTION; AGN JETS; MOJAVE; KINEMATICS; POSITIONS;
D O I：
10.3847/1538-4365/ac6352
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
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 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.
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页数：9
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