Project supported by the National Natural Science Foundation of China
The big blue bump in active galactic nuclei (AGNs) was considered as the thermal radiation from a thin accretion disk. However, the explanation has been challenged by several observational tests in recent years. Tryin...
Project supported by the National Natural Science Foundation of China
Up to now, the knowledge of size and structure of the BLR of AGNs, such as quasars and Seyfert galaxies, is still rather unclear. In recent years, people attempted to use the response characteristic of the line intens...