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

Abstract

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.

Authors:
ORCiD logo [1]
  1. California Inst. of Technology (CalTech), Pasadena, CA (United States)
Publication Date:
Research Org.:
California Inst. of Technology (CalTech), Pasadena, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Fusion Energy Sciences (FES) (SC-24); USDOE Advanced Research Projects Agency - Energy (ARPA-E); National Science Foundation (NSF); US Air Force Office of Scientific Research (AFOSR)
OSTI Identifier:
1597011
Grant/Contract Number:  
[FG02-04ER54755; AR0000565; FA9550-11-1-0184]
Resource Type:
Accepted Manuscript
Journal Name:
The Astrophysical Journal (Online)
Additional Journal Information:
[Journal Name: The Astrophysical Journal (Online); Journal Volume: 888; Journal Issue: 2]; Journal ID: ISSN 1538-4357
Publisher:
Institute of Physics (IOP)
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; Accretion; jets; magnetohydrodynamics; stellar jets; stellar accretion disks; young stellar objects; Collimation

Citation Formats

Bellan, P. M. Analytic Model for the Time-dependent Electromagnetic Field of an Astrophysical Jet. United States: N. p., 2020. Web. doi:10.3847/1538-4357/ab5f0d.
Bellan, P. M. Analytic Model for the Time-dependent Electromagnetic Field of an Astrophysical Jet. United States. doi:10.3847/1538-4357/ab5f0d.
Bellan, P. M. Thu . "Analytic Model for the Time-dependent Electromagnetic Field of an Astrophysical Jet". United States. doi:10.3847/1538-4357/ab5f0d.
@article{osti_1597011,
title = {Analytic Model for the Time-dependent Electromagnetic Field of an Astrophysical Jet},
author = {Bellan, P. M.},
abstractNote = {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.},
doi = {10.3847/1538-4357/ab5f0d},
journal = {The Astrophysical Journal (Online)},
number = [2],
volume = [888],
place = {United States},
year = {2020},
month = {1}
}

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