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Effects of Ducting on Whistler Mode Chorus or Exohiss in the Outer Radiation Belt

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378289%3A_____%2F19%3A00511302" target="_blank" >RIV/68378289:_____/19:00511302 - isvavai.cz</a>

  • Alternative codes found

    RIV/00216208:11320/19:10396819

  • Result on the web

    <a href="https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2019GL083115" target="_blank" >https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2019GL083115</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1029/2019GL083115" target="_blank" >10.1029/2019GL083115</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Effects of Ducting on Whistler Mode Chorus or Exohiss in the Outer Radiation Belt

  • Original language description

    Previously published statistics based on Cluster spacecraft measurements surprisingly show that in the outer radiation belt, lower band whistler mode waves predominantly propagate unattenuated parallel to the magnetic field lines up to midlatitudes, where ray tracing simulations indicated highly attenuated waves with oblique wave vectors. We explain this behavior by considering a large fraction of ducted waves. We argue that these ducts can be weak and thin enough to be difficult to detect by spacecraft instrumentation while being strong enough to guide whistler mode waves in a cold plasma ray tracing simulation. After adding a tenuous hot electron population, we obtain a strong effect of Landau damping on unducted waves, while the ducted waves experience less damping or even growth. Consequently, the weighted average of amplitudes and wave normal angles of a mixture of ducted and unducted waves provides us with strong quasi-parallel waves, consistent with the observations.

  • 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

  • Continuities

    I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Others

  • Publication year

    2019

  • Confidentiality

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

Data specific for result type

  • Name of the periodical

    Geophysical Research Letters

  • ISSN

    0094-8276

  • e-ISSN

  • Volume of the periodical

    46

  • Issue of the periodical within the volume

    11

  • Country of publishing house

    US - UNITED STATES

  • Number of pages

    11

  • Pages from-to

    5735-5745

  • UT code for WoS article

    000477616200012

  • EID of the result in the Scopus database

    2-s2.0-85067668078