Episodic Magnetic Bubbles and Jets: Astrophysical Implications from Laboratory Experiments

Abstract

Collimated outflows (jets) are ubiquitous in the universe appearing around sources as diverse as protostars and extragalactic supermassive blackholes. Jets are thought to be magnetically collimated, and launched from a magnetized accretion disk surrounding a compact gravitating object. We have developed the first laboratory experiments to address time-dependent, episodic phenomena relevant to the poorly understood jet acceleration and collimation region. The experimental results show the periodic ejections of magnetic bubbles naturally evolving into a heterogeneous jet propagating inside a channel made of self-collimated magnetic cavities. The results provide a unique view of the possible transition from a relatively steady-state jet launching to the observed highly structured outflows.

13 pages 4 Figures, revised version. Accepted for publication in the Astrophysical Journal Letters

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Cited by in corpus (25)

• Stability of Relativistic Jets from Rotating, Accreting Black Holes via Fully Three-Dimensional Magnetohydrodynamic Simulations
• Fluid Dynamics of Stellar Jets in Real Time: Third Epoch HST Images of HH 1, HH 34, and HH 47
• Astrophysics of magnetically collimated jets generated from laser-produced plasmas
• Outflows and mass accretion in collapsing dense cores with misaligned rotation axis and magnetic field
• The Impact of Recent Advances in Laboratory Astrophysics on our Understanding of the Cosmos
• Bow shock fragmentation driven by a thermal instability in laboratory-astrophysics experiments
• On the structure and stability of magnetic tower jets
• Models of the Mass-Ejection Histories of pre Planetary Nebulae, IV. Magnetized Winds and the Origins of Jets, Bullets, and FLIERs
• The Shock Dynamics of Heterogeneous YSO Jets: 3-D Simulations Meet Multi-Epoch Observations
• Three-Dimensional MHD Simulation of Caltech Plasma Jet Experiment: First Results
• Experimental Studies of Magnetically Driven Plasma Jets
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• Laboratory modeling of jets from young stars using plasma focus facilities
• Hypersonic Buckshot: Astrophysical Jets as Heterogeneous Collimated Plasmoids
• Persistent mysteries of jet engines, formation, propagation, and particle acceleration: have they been addressed experimentally?
• Numerical Simulation of magnetized jet creation using a hollow ring of laser beams
• Internal Structure of the Jets from Young Stars Simulated at Plasma Focus Facilities
• Structure of X-ray emitting jets close to the launching site: from embedded to disk-bearing sources
• Cooling and Instabilities in Colliding Flows
• Magnetic fields in circumstellar envelopes of evolved AGB stars
• Comparing Poynting flux dominated magnetic tower jets with kinetic-energy dominated jets
• Large jets from small-scale magnetic fields
• Numerical study of jets produced by conical wire arrays on the Magpie pulsed power generator
• Morphology of Shocked Lateral Outflows in Colliding Hydrodynamic Flows
• Axisymmetric Nonlinear Waves And Structures in Hall Plasmas