多波段观测揭示黑洞隐藏动态
At the center of nearly every large galaxy lies a supermassive black hole. These cosmic giants can be millions to billions of times heavier than our sun. When such a black hole actively pulls in surrounding gas, it forms an 'active galactic nucleus,' or AGN, which shines brightly across the entire electromagnetic spectrum. Studying these powerful objects helps astronomers understand how galaxies grow and evolve over time.
However, many of these active black holes are hidden from direct view. A thick ring of dust and gas, often called a torus, can surround the central engine. This obscuring torus blocks visible light and other radiation, making it extremely difficult to observe what is happening near the black hole. For decades, this has been a major challenge for researchers trying to study the innermost regions of AGNs.
Inspired by Scientific American reporting · Rewritten by Vocabsavvy · Vocabsavvy Original (inspired-by attribution)