Analytic Model for the Time-dependent Electromagnetic Field of an Astrophysical Jet

Bellan, P. M.

doi:10.3847/1538-4357/ab5f0d

Title: Analytic Model for the Time-dependent Electromagnetic Field of an Astrophysical Jet

Journal Article · Thu Jan 09 00:00:00 EST 2020 · The Astrophysical Journal (Online)

DOI:https://doi.org/10.3847/1538-4357/ab5f0d· OSTI ID:1597011

^[1]

California Inst. of Technology (CalTech), Pasadena, CA (United States)

In this work, an analytic model of the time-dependent electric and magnetic fields of an astrophysical jet is presented. These fields satisfy the time-dependent Faraday's law and describe a jet with increasing length. The electric field contains both electrostatic and inductive parts. The electrostatic part corresponds to the rate of injection of toroidal magnetic flux, while the sum of the electrostatic and inductive parts results in the electric field parallel to the magnetic field being zero everywhere. Lastly, the pinch force associated with the electric current provides a peaked pressure on the jet axis and a pressure minimum at the radius where the poloidal magnetic field reverses direction.

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Research Organization:: California Institute of Technology (CalTech), Pasadena, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Fusion Energy Sciences (FES); USDOE Advanced Research Projects Agency - Energy (ARPA-E); National Science Foundation (NSF); US Air Force Office of Scientific Research (AFOSR)

Grant/Contract Number:: FG02-04ER54755; AR0000565; FA9550-11-1-0184

OSTI ID:: 1597011

Journal Information:: The Astrophysical Journal (Online), Vol. 888, Issue 2; ISSN 1538-4357

Publisher:: Institute of Physics (IOP)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 2 works

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