射电星系喷流准直机制研究进展 postprint

Abstract: Radio galaxies are an important subclass of radio-loud active galactic nuclei (AGN), and relativistic radio jets are one of its typical observational features. The accelera�tion process of radio jets, the collimation mechanism and the role of magnetic field have been studied extensively by astronomers. In recent years, with the development of high-resolution VLBI observational techniques, radio astronomical observations have been able to probe the nuclear region of nearby AGN, which enables the study of the internal structure and physicalprocesses of the jets. As a result, astronomers have made great progress in the observational study of jet collimation mechanisms in nearby radio galaxies. First, several mainstream jet production models are presented, followed by a review of the recent progress in the study of the collimation mechanism of FR-I and FR-II radio galaxies by presenting typical case studies. Finally, we make a summary and give a short prospect for the future study of jet collimation mechanism in radio galaxies.