Skip to main content
OSTI.GOVU.S. Department of Energy Office of Scientific and Technical Information
U.S. Department of Energy
Office of Scientific and Technical Information
 

Quasilinear Analysis in the Source Region of Jovian Hectometric Emission Associated With Upward Electron Beams

Journal Article · · Journal of Geophysical Research. Space Physics
DOI:https://doi.org/10.1029/2024JA033241· OSTI ID:2507497
 [1];  [2];  [3];  [2];  [2];  [2];  [2];  [4];  [5]
  1. Institute for Physical Science and Technology University of Maryland College Park MD USA
  2. Department of Physics and Astronomy University of Iowa Iowa City IA USA
  3. Southwest Research Institute San Antonio TX USA, Physics and Astronomy Department University of Texas at San Antonio San Antonio TX USA
  4. Space Research Corporation Annapolis MD USA, NASA Goddard Space Flight Center Greenbelt MD USA
  5. Southwest Research Institute San Antonio TX USA
+ Show Author Affiliations
Abstract

Intense upward electron beams were measured by the Juno JADE instrument in the northern hemisphere, low‐latitude auroral zone source region. In this study we report on how these electron beams interact with plasma near and within the Jovian hectometric (HOM) emission (1 MHz 5 MHz) source region. Within the source region large upward loss cones are observed in the northern polar region at radial distances of 2Rj, magnetic latitude of . Intense, narrow electron beams ( 3 keV) are then observed, but within one second wave‐particle scattering is observed, filling the loss cone to energies 50 keV. These energies persist for several seconds before fading, leaving an empty loss cone again. The loss cone provides a free‐energy source for HOM emission resulting from the cyclotron maser instability. We use quasilinear analysis to examine the generation of HOM and the dynamics of wave‐particle interaction of the electron beams with HOM, and the generation via Landau interaction of whistler mode emission. The dynamic spectrum of the HOM emission generated by the loss‐cone electrons as well as that of the low‐frequency whistler‐mode waves generated by the up‐going electron beam can be constructed by quasilinear theory, which compare well with observation. The saturated state of the energetic electron velocity distribution function constructed via quasilinear theory also compare reasonably with observation.

Sponsoring Organization:
USDOE
Grant/Contract Number:
SC0022963
OSTI ID:
2507497
Journal Information:
Journal of Geophysical Research. Space Physics, Journal Name: Journal of Geophysical Research. Space Physics Journal Issue: 2 Vol. 130; ISSN 2169-9380
Publisher:
American Geophysical Union (AGU)Copyright Statement
Country of Publication:
United States
Language:
English

References (43)

Juno observations of energetic charged particles over Jupiter's polar regions: Analysis of monodirectional and bidirectional electron beams journal May 2017
Plasma measurements in the Jovian polar region with Juno/JADE journal July 2017
Juno/JEDI observations of 0.01 to >10 MeV energetic ions in the Jovian auroral regions: Anticipating a source for polar X‐ray emission journal July 2017
Generation of the Jovian hectometric radiation: First lessons from Juno journal May 2017
Electron beams and loss cones in the auroral regions of Jupiter journal July 2017
Auroral ion precipitation at Jupiter: Predictions for Juno journal August 2013
Instabilities in Space and Laboratory Plasmas book January 2010
Quasilinear theory of anisotropy-beta relations for proton cyclotron and parallel firehose instabilities: QUASILINEAR THEORY OF ANISOTROPY BETA RELATION journal August 2012
Quasilinear theory of anisotropy-beta relation for combined mirror and proton cyclotron instabilities journal August 2012
Observation of Electron Conics by Juno: Implications for Radio Generation and Acceleration Processes journal September 2018
Alfvénic Fluctuations Associated With Jupiter's Auroral Emissions journal July 2019
Jovian Auroral Radio Sources Detected In Situ by Juno/Waves: Comparisons With Model Auroral Ovals and Simultaneous HST FUV Images journal November 2019
Energetic Particles and Acceleration Regions Over Jupiter's Polar Cap and Main Aurora: A Broad Overview journal March 2020
Wave‐Particle Interactions Associated With Io's Auroral Footprint: Evidence of Alfvén, Ion Cyclotron, and Whistler Modes journal November 2020
The Generation of Upward‐Propagating Whistler Mode Waves by Electron Beams in the Jovian Polar Regions journal June 2020
Inferring Jovian Electron Densities Using Plasma Wave Spectra Obtained by the Juno/Waves Instrument journal August 2021
Quasilinear Model of Jovian Whistler Mode Emission journal December 2021
A New Model of Jupiter's Magnetic Field at the Completion of Juno's Prime Mission journal February 2022
Jupiter's Low‐Altitude Auroral Zones: Fields, Particles, Plasma Waves, and Density Depletions journal August 2022
Wave and Particle Analysis of Z‐Mode and O‐Mode Emission in the Jovian Inner Magnetosphere journal April 2023
Proton Equatorial Pitch Angle Distributions in Jupiter's Inner Magnetosphere journal June 2023
A New Type of Jovian Hectometric Radiation Powered by Monoenergetic Electron Beams journal May 2024
Lower ionospheric cyclotron maser theory: A possible source of 2ƒce and 3ƒce auroral radio emissions journal December 1996
On the generation of auroral radio emissions at harmonics of the lower ionospheric electron cyclotron frequency: X, O and Z mode maser calculations journal March 1998
FAST satellite observations of electric field structures in the auroral zone journal June 1998
Relativistic dispersion, the cyclotron maser instability, and auroral kilometric radiation journal October 1984
The maser synchrotron instability in an inhomogeneous medium: Determination of the spectral intensity of auroral kilometric radiation journal December 1986
Nonlinear turbulence theory and simulation of Buneman instability journal November 2010
Quasilinear theory and particle-in-cell simulation of proton cyclotron instability journal June 2014
Simulation and quasilinear theory of proton firehose instability journal January 2015
Electrostatic and whistler instabilities excited by an electron beam journal July 2017
Interaction of a density modulated electron beam with a magnetized plasma: Emission of whistler waves journal July 1994
Quasilinear analysis of loss-cone driven weakly relativistic electron cyclotron maser instability journal April 1995
Electrostatic upper-hybrid mode instability driven by a ring electron distribution journal June 2023
A theory of the terrestrial kilometric radiation journal June 1979
Electron mirror and cyclotron instabilities for solar wind plasma journal November 2021
Quasilinear evolution of cyclotron maser instability journal May 1995
Solar-Wind Proton Anisotropy Versus Beta Relation journal February 2013
Solar Wind Temperature Isotropy journal October 2019
Voyager 1 Planetary Radio Astronomy Observations Near Jupiter journal June 1979
Juno J Fluxgate Magnetometer Calibrated Data V1.0 dataset January 2017
Juno j/sw Jovian Auroral Distribution Calibrated v1.0 dataset January 2020
Juno E/J/Ss Waves Calibrated Survey full Resolution v2.0 collection January 2021

Similar Records

Wave and Particle Analysis of Z-Mode and O-Mode Emission in the Jovian Inner Magnetosphere
Journal Article · Sat Apr 22 20:00:00 EDT 2023 · Journal of Geophysical Research. Space Physics · OSTI ID:2422181
Electron - whistler interaction at the Earth`s bow shock: 1. Whistler instability
Journal Article · Sun Aug 01 00:00:00 EDT 1993 · Journal of Geophysical Research · OSTI ID:96486
SOURCE REGIONS OF THE TYPE II RADIO BURST OBSERVED DURING A CME–CME INTERACTION ON 2013 MAY 22
Journal Article · Sat Aug 20 00:00:00 EDT 2016 · Astrophysical Journal · OSTI ID:22667499

Related Subjects