PoS - Proceedings of Science
Volume 354 - High Energy Phenomena in Relativistic Outflows VII (HEPRO VII) - Poster Session
A Mechanism For Triple-Ridge Emission Structure Of AGN Jets
T. Ogihara*, K. Takahashi and K. Toma
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Published on: February 25, 2020
Recent radio very long baseline interferometry (VLBI) observations reveal a triple-ridge emission structure of the relativistic jet in M 87 radio galaxy that consists of the conventional limb-brightened feature and a narrow central ridge. Motivated by these observations, we examine a steady axisymmetric force-free model of a jet driven by the central black hole with its electromagnetic structure being consistent with general relativistic magnetohydrodynamic (GRMHD) simulations, and shown that the model with a velocity field associated with the electromagnetic field and a simple Gaussian distribution of emitting electrons at the jet base can produce the triple-ridge structure. This study will be complementary to theoretical analyses of the future observations of active galactic nucleus (AGN) jets.
DOI: https://doi.org/10.22323/1.354.0074
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