Jupiter Lightning-Induced Whistler and Sferic Events With Waves and MWR During Juno Perijoves

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F18%3A10389444" target="_blank" >RIV/00216208:11320/18:10389444 - isvavai.cz</a>

Alternative codes found

RIV/68378289:_____/18:00491732

Result on the web

<a href="https://doi.org/10.1029/2018GL078864" target="_blank" >https://doi.org/10.1029/2018GL078864</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1029/2018GL078864" target="_blank" >10.1029/2018GL078864</a>

Result language

angličtina

Original language name

Jupiter Lightning-Induced Whistler and Sferic Events With Waves and MWR During Juno Perijoves

Original language description

During the Juno perijove explorations from 27 August 2016 through 1 September 2017, strong electromagnetic impulses induced by Jupiter lightning were detected by the Microwave Radiometer (MWR) instrument in the form of 600-MHz sferics and recorded by the Waves instrument in the form of Jovian low-dispersion whistlers discovered in waveform snapshots below 20 kHz. We found 71 overlapping events including sferics, while Waves waveforms were available. Eleven of these also included whistler detections by Waves. By measuring the separation distances between the MWR boresight and the whistler exit point, we estimated the distance whistlers propagate below the ionosphere before exiting to the magnetosphere, called the coupling distance, to be typically one to several thousand of kilometers with a possibility of no subionospheric propagation, which gives a new constraint on the atmospheric whistler propagation. Plain Language Summary Lightning at Jupiter produces a strong electromagnetic impulse, which can escape the Jovian atmosphere and enter the inner magnetosphere. Among the lightning, microwave-frequency sferics come from lightning spots, and audio-frequency whistlers propagate away from the spots below the ionosphere. If certain plasma conditions are met, these whistlers can leak into the magnetosphere. Estimates of whistler propagation distances at the planet have not been previously performed. Since the arrival at Jupiter on 5 July 2016, the Juno spacecraft has provided the opportunity to monitor the two kinds of lightning activity with two onboard instruments during its closest approach to Jupiter. This opportunity happens every 53.6 day in the eccentric, polar orbit of Juno. Using data collected during Juno&apos;s closest approaches to Jupiter, the whistler propagation distance was estimated to be approximately one to several thousand kilometers, which may be comparable to the terrestrial equivalent. This new approach provides the benefit of understanding multidimensional structures of lightning at Jupiter.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10305 - Fluids and plasma physics (including surface physics)

Project

<a href="/en/project/LTAUSA17070" target="_blank" >LTAUSA17070: Electromagnetic waves in planetary ionospheres and magnetospheres</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2018

Confidentiality

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

Name of the periodical

Geophysical Research Letters

ISSN

0094-8276

e-ISSN

—

Volume of the periodical

45

Issue of the periodical within the volume

15

Country of publishing house

US - UNITED STATES

Number of pages

9

Pages from-to

7268-7276

UT code for WoS article

000443129500004

EID of the result in the Scopus database

2-s2.0-85052572071