The nature of obscured active galactic nuclei
Most galaxies host a supermassive black hole (SMBH) at their nucleus, one whose mass exceeds a million solar-masses. When material actively accretes onto the SMBH, associated processes can produce an active galactic nucleus (AGN) with a hot torus and dramatic bipolar jets of rapidly moving charged particles. The most luminous known AGN emit over ten trillion solar-luminosities. Astronomers are trying to understand what powers AGN, how they evolve, and how their jets and radiation affect their environments, and these extreme cases are expected to provide key insights.
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2019-10-14
