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Title: Laboratory Measurement of Large-Amplitude Whistler Pulses Generated by Fast Magnetic Reconnection

Abstract

Here, we introduce observations of large-amplitude (δB/B~ 0.01) oblique whistler wave pulses generated by a spontaneous, 3-D localized magnetic reconnection event in the Caltech jet experiment. The wave pulses are measured more than 50 ion skin depths from the reconnection location by a tetrahedron array of three-axis B-dot probes that mimic the pyramid flight formations of the Cluster and Magnetospheric Multiscale Mission spacecraft. Measurements of background parameters, wave polarization, and wave dispersion confirm that the pulses are whistler modes. These findings demonstrate that localized impulsive reconnection events can generate large-amplitude, oblique whistler wave pulses that propagate far outside the reconnection region. This offers a new pathway for the generation of magnetospheric whistler pulses and may help explain relativistic particle acceleration in phenomena such as solar flares that incorporate 3-D localized impulsive magnetic reconnection.

Authors:
ORCiD logo [1]; ORCiD logo [1]; 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); US Air Force Office of Scientific Research (AFOSR); National Science Foundation (NSF)
OSTI Identifier:
1574935
Alternate Identifier(s):
OSTI ID: 1530627
Grant/Contract Number:  
FG02-04ER54755
Resource Type:
Accepted Manuscript
Journal Name:
Geophysical Research Letters
Additional Journal Information:
Journal Volume: 46; Journal Issue: 13; Journal ID: ISSN 0094-8276
Publisher:
American Geophysical Union
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; fast magnetic reconnection; large‐amplitude whistler; 3‐D magnetic reconnection; laboratory plasma

Citation Formats

Haw, Magnus A., Seo, Byonghoon, and Bellan, Paul M. Laboratory Measurement of Large-Amplitude Whistler Pulses Generated by Fast Magnetic Reconnection. United States: N. p., 2019. Web. doi:10.1029/2019GL082621.
Haw, Magnus A., Seo, Byonghoon, & Bellan, Paul M. Laboratory Measurement of Large-Amplitude Whistler Pulses Generated by Fast Magnetic Reconnection. United States. doi:10.1029/2019GL082621.
Haw, Magnus A., Seo, Byonghoon, and Bellan, Paul M. Tue . "Laboratory Measurement of Large-Amplitude Whistler Pulses Generated by Fast Magnetic Reconnection". United States. doi:10.1029/2019GL082621.
@article{osti_1574935,
title = {Laboratory Measurement of Large-Amplitude Whistler Pulses Generated by Fast Magnetic Reconnection},
author = {Haw, Magnus A. and Seo, Byonghoon and Bellan, Paul M.},
abstractNote = {Here, we introduce observations of large-amplitude (δB/B~ 0.01) oblique whistler wave pulses generated by a spontaneous, 3-D localized magnetic reconnection event in the Caltech jet experiment. The wave pulses are measured more than 50 ion skin depths from the reconnection location by a tetrahedron array of three-axis B-dot probes that mimic the pyramid flight formations of the Cluster and Magnetospheric Multiscale Mission spacecraft. Measurements of background parameters, wave polarization, and wave dispersion confirm that the pulses are whistler modes. These findings demonstrate that localized impulsive reconnection events can generate large-amplitude, oblique whistler wave pulses that propagate far outside the reconnection region. This offers a new pathway for the generation of magnetospheric whistler pulses and may help explain relativistic particle acceleration in phenomena such as solar flares that incorporate 3-D localized impulsive magnetic reconnection.},
doi = {10.1029/2019GL082621},
journal = {Geophysical Research Letters},
number = 13,
volume = 46,
place = {United States},
year = {2019},
month = {6}
}

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