Whistler-Mode Chorus Wave Duct Propagation Caused by Ultralow Frequency Wave: Event Analysis and Ray-Tracing Simulation

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378289%3A_____%2F25%3A00638621" target="_blank" >RIV/68378289:_____/25:00638621 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11320/25:10510134

Výsledek na webu

<a href="https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2025GL116840" target="_blank" >https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2025GL116840</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1029/2025GL116840" target="_blank" >10.1029/2025GL116840</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Whistler-Mode Chorus Wave Duct Propagation Caused by Ultralow Frequency Wave: Event Analysis and Ray-Tracing Simulation

Popis výsledku v původním jazyce

This study presents observational evidence and ray-tracing simulations demonstrating ultra-low frequency (ULF) wave-induced duct propagation of whistler-mode waves. Cluster satellite observation reveals chorus propagating quasi-parallelly at high latitudes and ULF waves. Chorus intensity enhancements correlate with refractive index increases driven by the ULF wave-induced electron density and magnetic field variations. The theoretical maximum wave normal angle for duct propagation agrees with observed angles. The ray-tracing calculations, using observation-based duct models, reproduce ducted propagation, showing the consistent relation between frequencies and wave normal angles with the observation. These findings indicate that ULF waves create ducts guiding chorus waves to high latitudes and modulate chorus intensity in the time scale of the ULF wave period. This ULF wave ducting mechanism may explain chorus wave distribution and ULF wave-modulated electron precipitation/aurora, providing new insights into wave-particle interactions in radiation belts.

Název v anglickém jazyce

Whistler-Mode Chorus Wave Duct Propagation Caused by Ultralow Frequency Wave: Event Analysis and Ray-Tracing Simulation

Popis výsledku anglicky

This study presents observational evidence and ray-tracing simulations demonstrating ultra-low frequency (ULF) wave-induced duct propagation of whistler-mode waves. Cluster satellite observation reveals chorus propagating quasi-parallelly at high latitudes and ULF waves. Chorus intensity enhancements correlate with refractive index increases driven by the ULF wave-induced electron density and magnetic field variations. The theoretical maximum wave normal angle for duct propagation agrees with observed angles. The ray-tracing calculations, using observation-based duct models, reproduce ducted propagation, showing the consistent relation between frequencies and wave normal angles with the observation. These findings indicate that ULF waves create ducts guiding chorus waves to high latitudes and modulate chorus intensity in the time scale of the ULF wave period. This ULF wave ducting mechanism may explain chorus wave distribution and ULF wave-modulated electron precipitation/aurora, providing new insights into wave-particle interactions in radiation belts.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10305 - Fluids and plasma physics (including surface physics)

Projekt

<a href="/cs/project/GX25-18095X" target="_blank" >GX25-18095X: Neobvyklé módy šíření elektromagnetických vln ve Sluneční soustavě</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Geophysical Research Letters

ISSN

0094-8276

e-ISSN

1944-8007

Svazek periodika

52

Číslo periodika v rámci svazku

17

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

11

Strana od-do

e2025GL116840

Kód UT WoS článku

001559245500001

EID výsledku v databázi Scopus

2-s2.0-105015484035