Multimessenger Studies of Active Galactic Nucleus

Dear Colleagues,

Active galactic nuclei (AGNs) are a special type of galaxy. Depending on their emission origins, these galaxies possess special properties, including violent optical variability, core dominance, non-thermal emission, the jet phenomenon, and more. Multimessenger studies of active galactic nuclei (AGN) can aid us in developing methods that can be used to study the origins of AGNs. For example, violent optical variability is a typical property of AGNs. This variability can affect all the electromagnetic bands and help us to determine the emission structures, constrain the emission region, develop emission models, etc. Optical variabilities can reflect timescales ranging from minutes to years and can be divided into three types: microvariability, for timescales within 1 day; short-term variability, for timescales ranging from days to months; and long-term variability, for timescales encompassing multiple years. Some variabilities are periodic/quasi-periodic, such as long-term variability, but most display non-periodicity.

This Special Issue aims to showcase multimessenger studies of active galactic nuclei and to elucidate the emission origins and variable properties of AGNs.

Dr. Yuhai Yuan
Dr. Jingmeng Hao
Dr. Zhiyuan Pei
Guest Editors

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