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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

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - 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)

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

  • 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