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Observation of Small-amplitude Electromagnetic Cyclotron Waves in the Solar Wind

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F23%3A10475704" target="_blank" >RIV/00216208:11320/23:10475704 - isvavai.cz</a>

  • Result on the web

    <a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=TEklUjJ85F" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=TEklUjJ85F</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1088/1674-4527/acc156" target="_blank" >10.1088/1674-4527/acc156</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Observation of Small-amplitude Electromagnetic Cyclotron Waves in the Solar Wind

  • Original language description

    Our previous studies on low-frequency electromagnetic cyclotron waves (ECWs) with amplitudes larger than 0.1 nT in the solar wind revealed that the left-handed (LH) polarized ECWs are the dominant waves, and these waves preferentially occur in plasma conditions of high proton speed (V ( p )), high proton temperature (T ( p )), low proton density (N ( p )). In the present study, using magnetic field and plasma data from the Wind mission between 2005 and 2015, we perform a survey of small-amplitude ECWs with amplitudes smaller than 0.1 nT. It is revealed for the first time that the small-amplitude right-handed (RH) polarized ECWs tend to frequently occur in plasmas characterized by low V ( p ), low T ( p ), low N ( p ), although the small-amplitude LH ECWs still preferentially occur in plasma conditions similar to the LH ECWs with amplitudes larger than 0.1 nT. Further investigation shows that the occurrences of small-amplitude RH ECWs and long-lasting radial interplanetary magnetic field (lrIMF) share the similar preferential plasma conditions of low T ( p ) and low N ( p ). During lrIMF events, in particular, the occurrence rates of RH and LH ECWs are comparable, with the occurrence rate of small-amplitude RH ECWs slightly larger than that of small-amplitude LH ECWs. The generation mechanism of the small-amplitude ECWs is discussed.

  • 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

    2023

  • Confidentiality

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

Data specific for result type

  • Name of the periodical

    Research in Astronomy and Astrophysics

  • ISSN

    1674-4527

  • e-ISSN

    2397-6209

  • Volume of the periodical

    23

  • Issue of the periodical within the volume

    4

  • Country of publishing house

    CN - CHINA

  • Number of pages

    9

  • Pages from-to

    045009

  • UT code for WoS article

    000960031000001

  • EID of the result in the Scopus database

    2-s2.0-85152210331