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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">57380</article-id>
   <article-id pub-id-type="doi">10.12737/szf-92202308</article-id>
   <article-categories>
    <subj-group subj-group-type="toc-heading" xml:lang="ru">
     <subject>ВОСЕМНАДЦАТАЯ ЕЖЕГОДНАЯ КОНФЕРЕНЦИЯ «ФИЗИКА ПЛАЗМЫ В СОЛНЕЧНОЙ СИСТЕМЕ», 6–10 ФЕВРАЛЯ 2023 г., ИНСТИТУТ КОСМИЧЕСКИХ ИССЛЕДОВАНИЙ РАН, МОСКВА, РОССИЯ</subject>
    </subj-group>
    <subj-group subj-group-type="toc-heading" xml:lang="en">
     <subject>18TH ANNUAL CONFERENCE “PLASMA PHYSICS IN THE SOLAR SYSTEM”. FEBRUARY 6–10, 2023, SPACE RESEARCH INSTITUTE RAS, MOSCOW, RUSSIA</subject>
    </subj-group>
    <subj-group>
     <subject>ВОСЕМНАДЦАТАЯ ЕЖЕГОДНАЯ КОНФЕРЕНЦИЯ «ФИЗИКА ПЛАЗМЫ В СОЛНЕЧНОЙ СИСТЕМЕ», 6–10 ФЕВРАЛЯ 2023 г., ИНСТИТУТ КОСМИЧЕСКИХ ИССЛЕДОВАНИЙ РАН, МОСКВА, РОССИЯ</subject>
    </subj-group>
   </article-categories>
   <title-group>
    <article-title xml:lang="en">Quiet solar corona: daily images at 8.8–10.7 cm wavelengths</article-title>
    <trans-title-group xml:lang="ru">
     <trans-title>Спокойная корона Солнца: ежедневные изображения на длинах волн 8.8–10.7 см</trans-title>
    </trans-title-group>
   </title-group>
   <contrib-group content-type="authors">
    <contrib contrib-type="author">
     <contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1589-556X</contrib-id>
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Алтынцев</surname>
       <given-names>Александр Тимофеевич</given-names>
      </name>
      <name xml:lang="en">
       <surname>Altyntsev</surname>
       <given-names>Alexander Timofeevich</given-names>
      </name>
     </name-alternatives>
     <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-1"/>
    </contrib>
    <contrib contrib-type="author">
     <contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9174-7350</contrib-id>
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Глоба</surname>
       <given-names>Мария Викторовна</given-names>
      </name>
      <name xml:lang="en">
       <surname>Globa</surname>
       <given-names>Mariia Viktorovna</given-names>
      </name>
     </name-alternatives>
     <email>globa@iszf.irk.ru</email>
     <bio xml:lang="ru">
      <p>аспирант физико-математических наук;</p>
     </bio>
     <bio xml:lang="en">
      <p>graduate student of physical and mathematical sciences;</p>
     </bio>
     <xref ref-type="aff" rid="aff-2"/>
    </contrib>
    <contrib contrib-type="author">
     <contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6873-6394</contrib-id>
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Мешалкина</surname>
       <given-names>Наталия Сергеевна</given-names>
      </name>
      <name xml:lang="en">
       <surname>Meshalkina</surname>
       <given-names>Nataliya Sergeevna</given-names>
      </name>
     </name-alternatives>
     <email>nata@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-3"/>
    </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>
   <aff-alternatives id="aff-3">
    <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>
   <pub-date publication-format="print" date-type="pub" iso-8601-date="2023-06-29T16:11:28+03:00">
    <day>29</day>
    <month>06</month>
    <year>2023</year>
   </pub-date>
   <pub-date publication-format="electronic" date-type="pub" iso-8601-date="2023-06-29T16:11:28+03:00">
    <day>29</day>
    <month>06</month>
    <year>2023</year>
   </pub-date>
   <volume>9</volume>
   <issue>2</issue>
   <fpage>71</fpage>
   <lpage>77</lpage>
   <history>
    <date date-type="received" iso-8601-date="2023-02-28T00:00:00+03:00">
     <day>28</day>
     <month>02</month>
     <year>2023</year>
    </date>
    <date date-type="accepted" iso-8601-date="2023-04-13T00:00:00+03:00">
     <day>13</day>
     <month>04</month>
     <year>2023</year>
    </date>
   </history>
   <self-uri xlink:href="https://naukaru.ru/en/nauka/article/57380/view">https://naukaru.ru/en/nauka/article/57380/view</self-uri>
   <abstract xml:lang="ru">
    <p>В работе обсуждаются результаты тестовых испытаний решетки диапазона 3–6 ГГц Сибирского радиогелиографа (СРГ). Проверен метод калибровки яркостных температур изображений с помощью известных в литературе измерений яркостной температуры спокойного Солнца в минимуме между 20 и 21 циклами солнечной активности. Полученные зависимости от времени интегрального потока Солнца на 2.8 ГГц подобны измеренным в обсерватории Dominion Radio Astrophysical Observatory (DRAO), однако абсолютные значения потоков СРГ занижены относительно потоков DRAO на 10–15 %.&#13;
Спектральная плотность микроволнового потока Солнца на частоте 2.8 ГГц, так называемый индекс F10.7, является одним из основных индексов солнечной активности, используемых в качестве входных параметров в моделях ионосферы Земли. В работе рассмотрена связь величин полных потоков радиоизлучения с изменениями структуры источников на диске Солнца в течение интервала длительностью 50 дней. В период ежедневных наблюдений с 1 сентября по 20 октября 2021 г. количество активных областей на диске менялось в несколько раз, а величина интегральной плотности потока на частоте 2.8 ГГц — до 1.5 раз. В работе определены относительные вклады в интегральный поток тормозного излучения прилимбовых уярчений и факельных площадок, а также магнитотормозного излучения в магнитных полях активных областей. Проведено сравнение измеренных яркостных температур радиокарт СРГ с модельными, рассчитанными по данным наблюдений крайнего ультрафиолетового излучения (КУФ-излучения) на телескопе AIA/SDO. Результаты анализа могут быть использованы для организации на СРГ регулярных измерений скорректированного прокси-индекса солнечной активности F10.7, в котором исключен вклад гирорезонансного излучения.</p>
   </abstract>
   <trans-abstract xml:lang="en">
    <p>We discuss results of test observations of the 3–6 GHz range array of the Siberian Radio Heliograph (SRH). A method for calibrating brightness temperatures of images was verified using measurements of the brightness temperature of the quiet Sun at a minimum between solar activity cycles 20 and 21 known in the literature. The obtained time dependences of the integral solar flux at 2.8 GHz are similar to those measured at the Dominion Radio Astrophysical Observatory (DRAO), but the absolute values of SRH fluxes are lower relative to the DRAO fluxes by 10–15 %.&#13;
The spectral density of the solar microwave flux at a frequency of 2.8 GHz, the so-called F10.7 index, is one of the main solar activity indices used as input parameters in models of Earth’s ionosphere. The paper considers the relationship between total radio fluxes and changes in the structure of sources on the solar disk during an interval of 50 days. During the period of daily observations from September 1 to October 20, 2021, the number of active regions on the disk changed several times, and the integral flux density at 2.8 GHz changed up to 1.5 times. We determine the relative contributions to the integral flux of bremsstrahlung of near-limb brightenings and plage regions, as well as bremsstrahlung in magnetic fields of active regions. The measured brightness temperatures of SRH radio maps are compared to the model temperatures calculated from observations of extreme ultraviolet emission (EUV) with the AIA/SDO telescope. The results of the analysis can be used to organize regular measurements of the corrected solar activity proxy index F10.7 at SRH, in which the contribution of gyroresonance emission is excluded.</p>
   </trans-abstract>
   <kwd-group xml:lang="ru">
    <kwd>полный поток Солнца</kwd>
    <kwd>индекс F10.7</kwd>
   </kwd-group>
   <kwd-group xml:lang="en">
    <kwd>total solar flux</kwd>
    <kwd>F10.7 index</kwd>
   </kwd-group>
   <funding-group>
    <funding-statement xml:lang="ru">Работа выполнена при поддержке гранта РНФ № 22-22-00019</funding-statement>
    <funding-statement xml:lang="en">The work was financially supported by RSF (Grant No. 22-22-00019)</funding-statement>
   </funding-group>
  </article-meta>
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