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 <front>
  <journal-meta>
   <journal-id journal-id-type="publisher-id">Solnechno-Zemnaya Fizika</journal-id>
   <journal-title-group>
    <journal-title xml:lang="en">Solnechno-Zemnaya Fizika</journal-title>
    <trans-title-group xml:lang="ru">
     <trans-title>Солнечно-земная физика</trans-title>
    </trans-title-group>
   </journal-title-group>
   <issn publication-format="online">2712-9640</issn>
  </journal-meta>
  <article-meta>
   <article-id pub-id-type="publisher-id">28728</article-id>
   <article-id pub-id-type="doi">10.12737/szf-61202006</article-id>
   <article-categories>
    <subj-group subj-group-type="toc-heading" xml:lang="ru">
     <subject>Результаты  исследований</subject>
    </subj-group>
    <subj-group subj-group-type="toc-heading" xml:lang="en">
     <subject>Results of current research</subject>
    </subj-group>
    <subj-group>
     <subject>Результаты  исследований</subject>
    </subj-group>
   </article-categories>
   <title-group>
    <article-title xml:lang="en">Spatial structure of azimuthally small-scale MHD waves in one-dimensionally inhomogeneous finite pressure plasma with curved field lines</article-title>
    <trans-title-group xml:lang="ru">
     <trans-title>Пространственная структура азимутально-мелкомасштабных МГД-волн в одномерно-неоднородной плазме конечного давления с кривыми силовыми линиями</trans-title>
    </trans-title-group>
   </title-group>
   <contrib-group content-type="authors">
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Петращук</surname>
       <given-names>Александр Владимирович</given-names>
      </name>
      <name xml:lang="en">
       <surname>Petrashchuk</surname>
       <given-names>Aleksandr Vladimirovich</given-names>
      </name>
     </name-alternatives>
     <email>av.petrashchuk@mail.ru</email>
     <xref ref-type="aff" rid="aff-1"/>
    </contrib>
    <contrib contrib-type="author">
     <contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3278-6250</contrib-id>
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Климушкин</surname>
       <given-names>Дмитрий Юрьевич</given-names>
      </name>
      <name xml:lang="en">
       <surname>Klimushkin</surname>
       <given-names>Dmitri Yur'evich</given-names>
      </name>
     </name-alternatives>
     <email>klimush@iszf.irk.ru</email>
     <bio xml:lang="ru">
      <p>кандидат физико-математических наук;</p>
     </bio>
     <bio xml:lang="en">
      <p>candidate of physical and mathematical sciences;</p>
     </bio>
     <xref ref-type="aff" rid="aff-2"/>
    </contrib>
   </contrib-group>
   <aff-alternatives id="aff-1">
    <aff>
     <institution xml:lang="ru">Институт солнечно-земной физики СО РАН</institution>
     <city>Иркутск</city>
     <country>Россия</country>
    </aff>
    <aff>
     <institution xml:lang="en">Institute of Solar-Terrestrial Physics SB RAS</institution>
     <city>Irkutsk</city>
     <country>Russian Federation</country>
    </aff>
   </aff-alternatives>
   <aff-alternatives id="aff-2">
    <aff>
     <institution xml:lang="ru">Институт солнечно-земной физики СО РАН</institution>
     <city>Иркутск</city>
     <country>Россия</country>
    </aff>
    <aff>
     <institution xml:lang="en">Institute of Solar-Terrestrial Physics SB RAS</institution>
     <city>Irkutsk</city>
     <country>Russian Federation</country>
    </aff>
   </aff-alternatives>
   <volume>6</volume>
   <issue>1</issue>
   <fpage>63</fpage>
   <lpage>74</lpage>
   <self-uri xlink:href="https://zh-szf.ru/en/nauka/article/28728/view">https://zh-szf.ru/en/nauka/article/28728/view</self-uri>
   <abstract xml:lang="ru">
    <p>Изучено распространение гидромагнитных (МГД) волн в одномерно-неоднородной плазме конечного давления с кривыми силовыми линиями. Магнитные поверхности считаются концентрическими цилиндрами, где радиус цилиндра моделирует радиальную координату в магнитосфере Земли. Предполагается, что волны обладают азимутальной мелкомасштабностью. В данном приближении имеется только две МГД-моды: альфвеновская и медленный магнитный звук (ММЗ). Получено обыкновенное дифференциальное уравнение, описывающее пространственную структуру волнового поля в данной модели. Изучен характер особенностей на поверхностях альфвеновского и ММЗ-резонансов, влияние на него кривизны силовых линий. Определены области прозрачности волн. Установлено существенное расширение области прозрачности ММЗ по сравнению со случаем прямых силовых линий, а само существование альфвеновской области прозрачности обусловлено наличием кривизны силовых линий и конечного давления плазмы: в противном случае пространственная структура представляет локализованный резонанс.</p>
   </abstract>
   <trans-abstract xml:lang="en">
    <p>We have studied propagation of hydromagnetic (MHD) waves in one-dimensionally inhomogeneous finite pressure plasma with curved field lines. Magnetic surfaces are considered to be concentric cylinders, where the cylinder’s radius models the radial coordinate in Earth’s magnetosphere. The waves are supposed to be azimuthally small-scale. In this approximation there are only two MHD modes — Alfvén and slow magnetosonic (SMS). We have derived an ordinary differential equation for the spatial structure of the wave field in this model. We have examined the character of the singularity on the surface of Alfvén and SMS resonances and the influence of field line curvature on them. We have determined wave transparent regions. The SMS transparent region was found to essentially broaden as compared to the straight field line case. The very existence of the Alfvén transparent region is caused by the field line curvature and finite plasma pressure; otherwise, the wave structure is represented by a localized resonance.</p>
   </trans-abstract>
   <kwd-group xml:lang="ru">
    <kwd>МГД-волны</kwd>
    <kwd>цилиндрическая модель магнитосферы</kwd>
    <kwd>МГД-резонансы</kwd>
   </kwd-group>
   <kwd-group xml:lang="en">
    <kwd>MHD waves</kwd>
    <kwd>cylinder model of the magnetosphere</kwd>
    <kwd>MHD resonances</kwd>
   </kwd-group>
  </article-meta>
 </front>
 <body>
  <p></p>
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