Solitary Magnetic Structures Developed From Gyro-Resonance With Solar Wind Ions at Mars and Earth

Li-Jen Chen; Jasper Halekas; Shan Wang; Gina A. DiBraccio; Norberto Romanelli; Jonathan Ng; Christopher T. Russell; Steven J. Schwartz; David G. Sibeck; William Farrell; Craig Pollock; Daniel Gershman; Barbara Giles; Yaireska M. Collado-Vega

doi:10.1029/2021GL097600

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Solitary Magnetic Structures Developed From Gyro-Resonance With Solar Wind Ions at Mars and Earth

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Solitary Magnetic Structures Developed From Gyro-Resonance With Solar Wind Ions at Mars and Earth

Li-Jen Chen, Jasper Halekas, Shan Wang, Gina A. DiBraccio, Norberto Romanelli, Jonathan Ng, Christopher T. Russell, Steven J. Schwartz, David G. Sibeck, William Farrell, …

Geophysical research letters, Vol.49(3), e2021GL097600

02/16/2022

DOI: 10.1029/2021GL097600

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Abstract

We investigate solitary magnetic structures in the foreshock of Mars and Earth. The structures exhibit pulse-like magnetic field and density enhancements along with plasma heating and local solar wind (SW) ion reflection. The structures at Mars resemble the foreshock structures developed from ultra-low-frequency electromagnetic waves gyro-resonant with SW ions at Earth, and propagate toward the magnetosphere. We perform fully kinetic simulations to reproduce the solitary structures and the nonlinear evolution of ion distribution functions, illustrating their resonance with SW ions. The structures present self-induced foreshock turbulence that can have space weather effects. Our results advance the fundamental understanding of how SW interacts with planetary magnetospheres, and have potential impact on the current picture of planet-origin ion escape.

Geology

Physical Sciences

Geosciences, Multidisciplinary

Science & Technology

Details

Title: Subtitle: Solitary Magnetic Structures Developed From Gyro-Resonance With Solar Wind Ions at Mars and Earth
Creators: Li-Jen Chen - Goddard Space Flight Center
Jasper Halekas - University of Iowa
Shan Wang - University of Maryland, College Park
Gina A. DiBraccio - Goddard Space Flight Center
Norberto Romanelli - Goddard Space Flight Center
Jonathan Ng - Goddard Space Flight Center
Christopher T. Russell - University of California, Los Angeles
Steven J. Schwartz - The London College
David G. Sibeck - Goddard Space Flight Center
William Farrell - Goddard Space Flight Center
Craig Pollock - Denali Scientific, HealyAlaska99743
Daniel Gershman - Goddard Space Flight Center
Barbara Giles - NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA
Yaireska M. Collado-Vega - Goddard Space Flight Center
Resource Type: Journal article
Publication Details: Geophysical research letters, Vol.49(3), e2021GL097600
DOI: 10.1029/2021GL097600
ISSN: 0094-8276
eISSN: 1944-8007
Publisher: Amer Geophysical Union
Number of pages: 9
Grant note: 80GSFC21M0002 / Center for Research and Exploration in Space Sciences & Technology II (CRESST II) DESC0020058 / MMS mission, DOE; United States Department of Energy (DOE) 80NSSC18K1369; 80NSSC21K1046; 80NSSC20K1312 / NASA; National Aeronautics & Space Administration (NASA) AGS2010231 / NSF; National Science Foundation (NSF)
Language: English
Date published: 02/16/2022
Academic Unit: Physics and Astronomy
Record Identifier: 9984428797202771

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