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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">81101</article-id>
   <article-id pub-id-type="doi">10.12737/szf-103202403</article-id>
   <article-categories>
    <subj-group subj-group-type="toc-heading" xml:lang="ru">
     <subject>ДЕВЯТНАДЦАТАЯ ЕЖЕГОДНАЯ КОНФЕРЕНЦИЯ «ФИЗИКА ПЛАЗМЫ В СОЛНЕЧНОЙ СИСТЕМЕ», 5–9 ФЕВРАЛЯ 2024 Г., ИНСТИТУТ КОСМИЧЕСКИХ ИССЛЕДОВАНИЙ РАН, МОСКВА, РОССИЯ</subject>
    </subj-group>
    <subj-group subj-group-type="toc-heading" xml:lang="en">
     <subject>19TH ANNUAL CONFERENCE “PLASMA PHYSICS IN THE SOLAR SYSTEM”. FEBRUARY 5–9, 2024, SPACE RESEARCH INSTITUTE RAS, MOSCOW, RUSSIA</subject>
    </subj-group>
    <subj-group>
     <subject>ДЕВЯТНАДЦАТАЯ ЕЖЕГОДНАЯ КОНФЕРЕНЦИЯ «ФИЗИКА ПЛАЗМЫ В СОЛНЕЧНОЙ СИСТЕМЕ», 5–9 ФЕВРАЛЯ 2024 Г., ИНСТИТУТ КОСМИЧЕСКИХ ИССЛЕДОВАНИЙ РАН, МОСКВА, РОССИЯ</subject>
    </subj-group>
   </article-categories>
   <title-group>
    <article-title xml:lang="en">Observation at radio frequencies of the hydroxyl (OH) absorption line in filaments and prominences above active regions of the Sun</article-title>
    <trans-title-group xml:lang="ru">
     <trans-title>Наблюдение в радиодиапазоне линии поглощения гидроксила (ОН) в волокнах и протуберанцах над активными областями Солнца</trans-title>
    </trans-title-group>
   </title-group>
   <contrib-group content-type="authors">
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Овчинникова</surname>
       <given-names>Нина Евгеньевна</given-names>
      </name>
      <name xml:lang="en">
       <surname>Ovchinnikova</surname>
       <given-names>Nina Evgenevna</given-names>
      </name>
     </name-alternatives>
     <email>n.e.ovchinnikova@gmail.com</email>
     <xref ref-type="aff" rid="aff-1"/>
    </contrib>
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Bogod</surname>
       <given-names>V. Михайлович</given-names>
      </name>
      <name xml:lang="en">
       <surname>Bogod</surname>
       <given-names>V. M.</given-names>
      </name>
     </name-alternatives>
     <email>vbog_spb@mail.ru</email>
     <bio xml:lang="ru">
      <p>доктор физико-математических наук;</p>
     </bio>
     <bio xml:lang="en">
      <p>doctor of physical and mathematical sciences;</p>
     </bio>
     <xref ref-type="aff" rid="aff-2"/>
    </contrib>
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Лебедев</surname>
       <given-names>Михаил Константинович</given-names>
      </name>
      <name xml:lang="en">
       <surname>Lebedev</surname>
       <given-names>Mikhail Konstantinovich</given-names>
      </name>
     </name-alternatives>
     <email>m.k.lebedev@gmail.com</email>
     <xref ref-type="aff" rid="aff-3"/>
    </contrib>
   </contrib-group>
   <aff-alternatives id="aff-1">
    <aff>
     <institution xml:lang="ru">Санкт-Петербургский филиал Специальной астрофизической обсерватории РАН</institution>
     <city>Санкт-Петербург</city>
     <country>Россия</country>
    </aff>
    <aff>
     <institution xml:lang="en">Special Astrophysical Observatory</institution>
     <city>St. Petersburg</city>
     <country>Russian Federation</country>
    </aff>
   </aff-alternatives>
   <aff-alternatives id="aff-2">
    <aff>
     <institution xml:lang="ru">St. Petersburg Branch of the Special Astrophysical Observatory of the Russian Academy of Sciences</institution>
     <country>Россия</country>
    </aff>
    <aff>
     <institution xml:lang="en">St. Petersburg Branch of the Special Astrophysical Observatory of the Russian Academy of Sciences</institution>
     <country>Russian Federation</country>
    </aff>
   </aff-alternatives>
   <aff-alternatives id="aff-3">
    <aff>
     <institution xml:lang="ru">Санкт-Петербургский филиал Специальной астрофизической обсерватории РАН</institution>
     <city>Санкт-Петербург</city>
     <country>Россия</country>
    </aff>
    <aff>
     <institution xml:lang="en">Special Astrophysical Observatory</institution>
     <city>St. Petersburg</city>
     <country>Russian Federation</country>
    </aff>
   </aff-alternatives>
   <pub-date publication-format="print" date-type="pub" iso-8601-date="2024-09-29T00:00:00+03:00">
    <day>29</day>
    <month>09</month>
    <year>2024</year>
   </pub-date>
   <pub-date publication-format="electronic" date-type="pub" iso-8601-date="2024-09-29T00:00:00+03:00">
    <day>29</day>
    <month>09</month>
    <year>2024</year>
   </pub-date>
   <volume>10</volume>
   <issue>3</issue>
   <fpage>21</fpage>
   <lpage>26</lpage>
   <history>
    <date date-type="received" iso-8601-date="2024-03-31T00:00:00+03:00">
     <day>31</day>
     <month>03</month>
     <year>2024</year>
    </date>
    <date date-type="accepted" iso-8601-date="2024-05-23T00:00:00+03:00">
     <day>23</day>
     <month>05</month>
     <year>2024</year>
    </date>
   </history>
   <self-uri xlink:href="https://naukaru.ru/en/nauka/article/81101/view">https://naukaru.ru/en/nauka/article/81101/view</self-uri>
   <abstract xml:lang="ru">
    <p>При наблюдениях Солнца на радиотелескопе РАТАН-600 с использованием спектрополяриметрического комплекса диапазона 1–3 ГГц в радиоизлучении отдельных активных областей Солнца, находящихся под холодным волокном или на лимбе под протуберанцем, а также при наблюдении коронального дождя было обнаружено поглощение в области спектра 1.5–1.65 ГГц. Наблюдаемая структура линий соответствует частотам сверхтонкого расщепления в основном состоянии X²Π₃/₂ гидроксила (OH) 1612–1720 МГц. При прохождении наблюдаемой области через ножевую диаграмму направленности антенны телескопа полоса поглощения смещается по частоте в результате сдвига энергетических уровней молекулы OH в магнитном поле, которое меняется вдоль волокна.</p>
   </abstract>
   <trans-abstract xml:lang="en">
    <p>When observing the Sun with RATAN-600 radio telescope using a spectropolarimetric complex in the range 1–3 GHz, as well as when observing coronal rain, absorption in the radio emission was discovered in the spectral region 1.5–1.65 GHz in active solar regions located under a cold filament or on the limb under a prominence. The observed line structure corresponds to the hyperfine splitting frequencies in the ground state of X²Π₃/₂ hydroxyl (OH) 1612–1720 MHz. When the observed active region passes through the knife-shaped beam pattern of the telescope antenna, the absorption band shifts in frequency due to a shift in the energy levels of the OH molecule in a magnetic field, which changes along the filament.</p>
   </trans-abstract>
   <kwd-group xml:lang="ru">
    <kwd>Солнце</kwd>
    <kwd>корональные структуры</kwd>
    <kwd>линии поглощения</kwd>
    <kwd>гидроксил</kwd>
   </kwd-group>
   <kwd-group xml:lang="en">
    <kwd>Sun</kwd>
    <kwd>coronal structures</kwd>
    <kwd>absorption lines</kwd>
    <kwd>hydroxyl</kwd>
   </kwd-group>
   <funding-group>
    <funding-statement xml:lang="ru">Наблюдения на телескопах САО РАН проводятся при поддержке Министерства науки и высшего образования Российской Федерации. Обновление приборной базы осуществляется в рамках национального проекта «Наука и университеты»</funding-statement>
    <funding-statement xml:lang="en">Observations by SAO RAS telescopes are supported by the Ministry of Science and Higher Education of the Russian Federation. Renovation of telescope equipment is currently provided within the national project &quot;Science and Universities”</funding-statement>
   </funding-group>
  </article-meta>
 </front>
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