Statistical Study on L-O Mode Saturn Kilometric Radiation

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378289%3A_____%2F25%3A00638055" target="_blank" >RIV/68378289:_____/25:00638055 - isvavai.cz</a>

Výsledek na webu

<a href="https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2025GL114876" target="_blank" >https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2025GL114876</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1029/2025GL114876" target="_blank" >10.1029/2025GL114876</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Statistical Study on L-O Mode Saturn Kilometric Radiation

Popis výsledku v původním jazyce

Based on the 13 years-long observation of Saturn kilometric radiation (SKR) by the Cassini/Radio and Plasma Wave Science instrument, this study derives statistics for left-hand (L-O) mode SKR emissions. These emissions span a frequency range from below 10 kHz to approximately 1,000 kHz, with spectral flux densities ranging between 10(-24) and 10(-18) W/(m(2) Hz) consistent with, although fainter than, right-hand mode SKR. Predominantly observed within 20 Saturn radii, the occurrence rates of L-O mode SKR exhibit a preference below 20 degrees in latitude, and a local time asymmetry with a higher occurrence rate on the dayside. Occurrence maps indicate that low-frequency (<100 kHz) L-O mode SKR may be obstructed by the Enceladus plasma torus due to the higher electron density, while high-frequency (>100 kHz) emissions can pass through unhindered. Additionally, a substantial proportion of high-latitude L-O mode emissions exhibit strong elliptical polarization, contrasting with predominantly circular polarization observed at low latitudes.

Název v anglickém jazyce

Statistical Study on L-O Mode Saturn Kilometric Radiation

Popis výsledku anglicky

Based on the 13 years-long observation of Saturn kilometric radiation (SKR) by the Cassini/Radio and Plasma Wave Science instrument, this study derives statistics for left-hand (L-O) mode SKR emissions. These emissions span a frequency range from below 10 kHz to approximately 1,000 kHz, with spectral flux densities ranging between 10(-24) and 10(-18) W/(m(2) Hz) consistent with, although fainter than, right-hand mode SKR. Predominantly observed within 20 Saturn radii, the occurrence rates of L-O mode SKR exhibit a preference below 20 degrees in latitude, and a local time asymmetry with a higher occurrence rate on the dayside. Occurrence maps indicate that low-frequency (<100 kHz) L-O mode SKR may be obstructed by the Enceladus plasma torus due to the higher electron density, while high-frequency (>100 kHz) emissions can pass through unhindered. Additionally, a substantial proportion of high-latitude L-O mode emissions exhibit strong elliptical polarization, contrasting with predominantly circular polarization observed at low latitudes.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10303 - Particles and field physics

Projekt

<a href="/cs/project/GF24-11046L" target="_blank" >GF24-11046L: Radiové emise planety Saturn: otevřené otázky</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

15

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

10

Strana od-do

e2025GL114876

Kód UT WoS článku

001543348800001

EID výsledku v databázi Scopus

2-s2.0-105012388854