Observations of the First Harmonic of Saturn Kilometric Radiation During Cassini's Grand Finale
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378289%3A_____%2F22%3A00561095" target="_blank" >RIV/68378289:_____/22:00561095 - isvavai.cz</a>
Result on the web
<a href="https://hal.science/hal-03807514/document" target="_blank" >https://hal.science/hal-03807514/document</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1029/2022JA030776" target="_blank" >10.1029/2022JA030776</a>
Alternative languages
Result language
angličtina
Original language name
Observations of the First Harmonic of Saturn Kilometric Radiation During Cassini's Grand Finale
Original language description
Clear first harmonic emissions of Saturn Kilometric Radiation are discovered during the Cassini Grand Finale orbits. Both ordinary (O) and extraordinary (X) mode fundamental emissions accompanied by X mode harmonics are observed. Analysis shows that the frequency ratio between the fundamental and harmonic emissions is 2.01 +/- 0.08, and the harmonic emissions display weaker intensities than the fundamental, by 30-40 dB for the X-X (fundamental-harmonic) type harmonic and 10-30 dB for the O-X type harmonic. The intensity relations between the two types of harmonics, that is, O-X and X-X show different patterns that we attribute to different conditions of emission at the source. Direction-finding results shows that the fundamental and harmonic emissions are plausibly generated in the same source region. In agreement with previous studies at Earth, the generation of the two types of harmonics can be attributed to the cyclotron maser instability operating with different plasma density and electron energy distributions in the source region.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10308 - Astronomy (including astrophysics,space science)
Result continuities
Project
<a href="/en/project/GF20-06802L" target="_blank" >GF20-06802L: Analysis of fine structures in auroral radio emissions</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Geophysical Research-Space Physics
ISSN
2169-9380
e-ISSN
2169-9402
Volume of the periodical
127
Issue of the periodical within the volume
9
Country of publishing house
US - UNITED STATES
Number of pages
12
Pages from-to
e2022JA030776
UT code for WoS article
000850891100001
EID of the result in the Scopus database
2-s2.0-85139061512