Episodic Jets from Black Hole Accretion Disks

Abstract

Several active galactic nuclei and microquasars are observed to eject plasmoids that move at relativistic speeds. We envisage the plasmoids as pre-existing current carrying magnetic flux ropes that were initially anchored in the accretion disk-corona. The plasmoids are ejected outwards via a mechanism called the toroidal instability (TI). The TI, which was originally explored in the context of laboratory tokamak plasmas, has been very successful in explaining coronal mass ejections from the Sun. Our model predictions for plasmoid trajectories compare favorably with a representative set of multi-epoch observations of radio emitting knots from the radio galaxy 3C120, which were preceded by dips in Xray intensity.

arXiv commentAccepted for publication in the Astrophysical Journal

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Cited by in corpus (5)

• Plasmoid formation in global GRMHD simulations and AGN flares
• Magnetic reconnection and plasmoid formation in three-dimensional accretion flows around black holes
• Fast radio burst counterparts and their implications for the central engine
• A large misalignment between continuous jet and discrete ejecta in microquasar GRS 1915+105 during its obscured phase
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