Quasiperiodic Saturn Auroral Hiss Observed During a Cassini Proximal Orbit
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378289%3A_____%2F20%3A00541599" target="_blank" >RIV/68378289:_____/20:00541599 - isvavai.cz</a>
Alternative codes found
RIV/00216208:11320/20:10423152
Result on the web
<a href="https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2019JA027338" target="_blank" >https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2019JA027338</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1029/2019JA027338" target="_blank" >10.1029/2019JA027338</a>
Alternative languages
Result language
angličtina
Original language name
Quasiperiodic Saturn Auroral Hiss Observed During a Cassini Proximal Orbit
Original language description
Saturn auroral hiss is intense whistler mode emission similar in morphology to terrestrial auroral hiss, and is observed at high latitude very often in quasiperiodic episodes with a period of approximately 1 hr. Bader et al. (2019) report auroral pulsations that may be due to duskside magnetodisk reconnection. The source of the 1-hr period is not definitively known but has been purported to be due to second harmonic Alfven waves standing along near planet magnetic field lines (Yates et al., 2016). Observations of auroral hiss at high latitude along Cassini proximal orbits are often excellent, and we have focused on an event for which we have concurrent ultraviolet auroral images as well as electron flux data. A series of repeating auroral hiss episodes is observed to initiate near the magnetic field line that traverses a Saturn kilometric radiation source region in each hemisphere, with periodic episodes of hiss recurring at higher L-shells. Magnetic field lines centered on individual hiss episodes have auroral footprints that lie near and within a region of intense auroral ultraviolet emissions. These observations have a parallel in terrestrial return current electron beam-generated auroral hiss seen near magnetic field lines supporting auroral kilometric radiation source regions. Recent findings link periodic plasma injections with Saturn reconnection sites observed preferentially on the duskside. These injections may spawn Saturn kilometric radiation source regions and periodic auroral hiss emission in nearby return current regions.
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
10305 - Fluids and plasma physics (including surface physics)
Result continuities
Project
<a href="/en/project/LTAUSA17070" target="_blank" >LTAUSA17070: Electromagnetic waves in planetary ionospheres and magnetospheres</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2020
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
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Volume of the periodical
125
Issue of the periodical within the volume
1
Country of publishing house
US - UNITED STATES
Number of pages
10
Pages from-to
e2019JA027338
UT code for WoS article
000535392400035
EID of the result in the Scopus database
2-s2.0-85081407099