黑洞与星系的“爱恨情仇”：自宇宙黎明伊始的标度关系
The Never-ending Story Between Black Hole and Their Host Stellar Component: Scaling Relations Starting From Cosmic Dawn
In the local universe, tight correlations have been found between the mass of the supermassive black holes and their host galaxy properties, such as central velocity dispersion and the stellar mass. Linking physics from the vicinity of black holes to galactic scale or even large scale structures, these scaling relations has become the local benchmark for calibrating various fueling and feedback models. In recent years, efforts have been made to push the measurement of these scaling relations to earlier universe in order to directly trace the coevolution track of black holes and galaxies. However, due to the various sample selection and measuring techniques adopted so far, results at intermediate redshift (cosmic noon) are still ambiguous, while results at higher redshift (cosmic dawn) are chaotic. In this talk, I will start by introducing scaling relations in the local universe, the current coevolution scenario, and the measurement techniques for obtaining these results. Then, I will move on to higher redshift, gradually unveiling the complicated situations as well as discussing the latest JWST results and their implications for black hole seeding and AGN physics. Finally, I will talk about my own efforts in measuring host galaxy stellar mass for a peculiar type of AGN newly discovered at z>4.
