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Black Hole Astrophysics with VLBI: Past, Present, and Future
- Workshop in honor of Professor INOUE Makoto's retirement -
March 27-29, 2017
Mitaka Campus, NAOJ, Tokyo, Japan
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Poster Presentation

Theoretical Models of the Black Hole Magnetospheres and Jets

Author(s): YooGeun SONG (KASI / UST)

Presenter: YooGeun Song (Korea Astronomy and Space Science Institute (KASI) / University of Science and Technology (UST))

In this presentation, I introduce comprehensive theoretical models for the axisymmetric, ``nonstationary"  (i.e., time-dependent)  black hole magnetospheres and jets of an active galactic nucleus (AGN) that consists of a supermassive black hole surrounded by a magnetized accretion disk, based on the previous investigations by many scientists. The models are investigated for three sub-regions of the vicinity of the black hole: the relativistic black hole magnetosphere, the Newtonian black hole magnetosphere, and the Newtonian acceleration region.
As the main results of my research work, I present the explicit forms of the nonstationary  ``Grad-Shafranov Equations," governing the  black hole magnetospheres/jets treated within the framework of axial symmetry, derived  in the relativistic, the Newtonian, and the Newtonian acceleration regions, respectively. As a result of my work, we can understand the black hole magnetospheres and jets of AGNs in much more precise ways.