Identifying Kinetic Plasma Wave Modes Observed in the Acceleration Regions in the Low-Latitude Boundary Layer

T. J. Moore; Katariina Nykyri; Andrew P. Dimmock

Identifying Kinetic Plasma Wave Modes Observed in the Acceleration Regions in the Low-Latitude Boundary Layer

T. J. Moore, Katariina Nykyri, Andrew P. Dimmock

Physical Sciences

Research output: Contribution to conference › Presentation

Abstract

Understanding plasma heating and transport across fluid, ion and electron scales is currently not well understood in astrophysical plasmas. We have recently identified (by determining the observational dispersion relation using multi-point spacecraft measurements) an ion-scale, large amplitude fast mode wave observed inside a fluid-scale Kelvin-Helmholtz vortex. The Poyinting flux of the fast mode wave packet was sufficient to produce the observed ~5 keV energy increase of ions of magnetosheath origin. In this followup work, we analyze in detail the other intervals with similar characteristics, where the cold magnetosheath population becomes significantly energized. We identify the plasma wave modes present and discuss whether their energy budget is sufficient for the observed level of energization.

Original language	American English
State	Published - Dec 14 2015
Event	American Geophysical Union Fall Meeting - New Orleans, LA Duration: Dec 1 2016 → …

Conference

Conference	American Geophysical Union Fall Meeting
Period	12/1/16 → …

Keywords

plasma waves
magnetosheath

Disciplines

Astrophysics and Astronomy

Cite this

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title = "Identifying Kinetic Plasma Wave Modes Observed in the Acceleration Regions in the Low-Latitude Boundary Layer",

abstract = " Understanding plasma heating and transport across fluid, ion and electron scales is currently not well understood in astrophysical plasmas. We have recently identified (by determining the observational dispersion relation using multi-point spacecraft measurements) an ion-scale, large amplitude fast mode wave observed inside a fluid-scale Kelvin-Helmholtz vortex. The Poyinting flux of the fast mode wave packet was sufficient to produce the observed ~5 keV energy increase of ions of magnetosheath origin. In this followup work, we analyze in detail the other intervals with similar characteristics, where the cold magnetosheath population becomes significantly energized. We identify the plasma wave modes present and discuss whether their energy budget is sufficient for the observed level of energization.",

keywords = "plasma waves, magnetosheath",

author = "Moore, {T. J.} and Katariina Nykyri and Dimmock, {Andrew P.}",

year = "2015",

month = dec,

day = "14",

language = "American English",

note = "American Geophysical Union Fall Meeting ; Conference date: 01-12-2016",

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TY - CONF

T1 - Identifying Kinetic Plasma Wave Modes Observed in the Acceleration Regions in the Low-Latitude Boundary Layer

AU - Moore, T. J.

AU - Nykyri, Katariina

AU - Dimmock, Andrew P.

PY - 2015/12/14

Y1 - 2015/12/14

N2 - Understanding plasma heating and transport across fluid, ion and electron scales is currently not well understood in astrophysical plasmas. We have recently identified (by determining the observational dispersion relation using multi-point spacecraft measurements) an ion-scale, large amplitude fast mode wave observed inside a fluid-scale Kelvin-Helmholtz vortex. The Poyinting flux of the fast mode wave packet was sufficient to produce the observed ~5 keV energy increase of ions of magnetosheath origin. In this followup work, we analyze in detail the other intervals with similar characteristics, where the cold magnetosheath population becomes significantly energized. We identify the plasma wave modes present and discuss whether their energy budget is sufficient for the observed level of energization.

AB - Understanding plasma heating and transport across fluid, ion and electron scales is currently not well understood in astrophysical plasmas. We have recently identified (by determining the observational dispersion relation using multi-point spacecraft measurements) an ion-scale, large amplitude fast mode wave observed inside a fluid-scale Kelvin-Helmholtz vortex. The Poyinting flux of the fast mode wave packet was sufficient to produce the observed ~5 keV energy increase of ions of magnetosheath origin. In this followup work, we analyze in detail the other intervals with similar characteristics, where the cold magnetosheath population becomes significantly energized. We identify the plasma wave modes present and discuss whether their energy budget is sufficient for the observed level of energization.

KW - plasma waves

KW - magnetosheath

M3 - Presentation

T2 - American Geophysical Union Fall Meeting

Y2 - 1 December 2016

ER -