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 <front>
  <journal-meta>
   <journal-id journal-id-type="publisher-id">Solar-Terrestrial Physics</journal-id>
   <journal-title-group>
    <journal-title xml:lang="en">Solar-Terrestrial Physics</journal-title>
    <trans-title-group xml:lang="ru">
     <trans-title>Солнечно-земная физика / Solnechno-Zemnaya Fizika / Solar-Terrestrial Physics</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">46199</article-id>
   <article-id pub-id-type="doi">10.12737/szf-81202202</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">Small solar flares and local polarity inversion lines of the longitudinal magnetic field of the active region</article-title>
    <trans-title-group xml:lang="ru">
     <trans-title>Малые солнечные вспышки и локальные линии раздела полярности продольного магнитного поля активной области</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/0000-0001-5725-8262</contrib-id>
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Боровик</surname>
       <given-names>Александр Васильевич</given-names>
      </name>
      <name xml:lang="en">
       <surname>Borovik</surname>
       <given-names>Aleksandr Vasil'evich</given-names>
      </name>
     </name-alternatives>
     <email>aborovik@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-1"/>
    </contrib>
    <contrib contrib-type="author">
     <contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9563-1360</contrib-id>
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Жданов</surname>
       <given-names>Антон Андреевич</given-names>
      </name>
      <name xml:lang="en">
       <surname>Zhdanov</surname>
       <given-names>Anton Andreevich</given-names>
      </name>
     </name-alternatives>
     <email>kick.out@mail.ru</email>
     <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>
   <pub-date publication-format="print" date-type="pub" iso-8601-date="2022-03-25T18:50:14+03:00">
    <day>25</day>
    <month>03</month>
    <year>2022</year>
   </pub-date>
   <pub-date publication-format="electronic" date-type="pub" iso-8601-date="2022-03-25T18:50:14+03:00">
    <day>25</day>
    <month>03</month>
    <year>2022</year>
   </pub-date>
   <volume>8</volume>
   <issue>1</issue>
   <fpage>19</fpage>
   <lpage>23</lpage>
   <history>
    <date date-type="received" iso-8601-date="2021-10-11T00:00:00+03:00">
     <day>11</day>
     <month>10</month>
     <year>2021</year>
    </date>
    <date date-type="accepted" iso-8601-date="2021-12-13T00:00:00+03:00">
     <day>13</day>
     <month>12</month>
     <year>2021</year>
    </date>
   </history>
   <self-uri xlink:href="https://naukaru.ru/en/nauka/article/46199/view">https://naukaru.ru/en/nauka/article/46199/view</self-uri>
   <abstract xml:lang="ru">
    <p>По фотосферным данным и данным о продольном магнитном поле со спутника SDO, а также по наблюдениям в линии Нα на наземных станциях GONG исследована вспышечная активность группы солнечных пятен NOAA 12673, которая в сентябре 2017 г. произвела крупнейшую за последнее десятилетие вспышку класса X9.3. Активная область отличалась бурным развитием и сложными топологией и динамикой магнитного поля. Установлено, что в активной области на протяжении практически всего времени развития вследствие движений разнополярных магнитных потоков и их сближений происходило формирование многочисленных локальных линий раздела полярностей (ЛЛРП) магнитного поля. Обнаружено, что малые солнечные вспышки тесным образом связаны с ЛЛРП и возникают на тех участках ЛЛРП, где градиент продольного магнитного поля со временем достигает максимальных значений.</p>
   </abstract>
   <trans-abstract xml:lang="en">
    <p>Using photospheric data and data on the longitudinal magnetic field from the SDO satellite, as well as observations in the Hα line from GONG ground stations, we have studied the flare activity of the NOAA 12673 sunspot group, which in September 2017 produced the largest X9.3 class flare in the last decade. The active region was distinguished by rapid development, complex topology, and magnetic field dynamics. We have established that in the active region almost throughout the development period due to movements of diverse polar magnetic fluxes and their convergence, numerous local polarity inversion lines (LPIL) of the magnetic field were formed. Small solar flares have been found to be closely related to LPIL and to occur in those areas of LPIL where the gradient of the longitudinal magnetic field over time reaches maximum values.</p>
   </trans-abstract>
   <kwd-group xml:lang="ru">
    <kwd>активные области</kwd>
    <kwd>малые солнечные вспышки</kwd>
    <kwd>структура продольного магнитного поля</kwd>
    <kwd>линии раздела полярности (ЛРП)</kwd>
   </kwd-group>
   <kwd-group xml:lang="en">
    <kwd>active regions</kwd>
    <kwd>small solar flares</kwd>
    <kwd>longitudinal magnetic field structure</kwd>
    <kwd>polarity inversion lines (PIL)</kwd>
   </kwd-group>
   <funding-group>
    <funding-statement xml:lang="ru">Работа выполнена в рамках государственного задания II.16 и поддержана грантом РФФИ 19-52-45002</funding-statement>
    <funding-statement xml:lang="en">The work was performed with budgetary funding of Basic Research program II.16 and was supported by RFBR grant No. 19-52-45002</funding-statement>
   </funding-group>
  </article-meta>
 </front>
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