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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">100205</article-id>
   <article-id pub-id-type="doi">10.12737/szf-112202512</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">Geomagnetic cutoff rigidity in neutron monitor locations</article-title>
    <trans-title-group xml:lang="ru">
     <trans-title>Жесткость геомагнитного обрезания в местах расположения нейтронных мониторов</trans-title>
    </trans-title-group>
   </title-group>
   <contrib-group content-type="authors">
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Кручинин</surname>
       <given-names>Павел Алексеевич</given-names>
      </name>
      <name xml:lang="en">
       <surname>Kruchinin</surname>
       <given-names>Pavel Alekseevich</given-names>
      </name>
     </name-alternatives>
     <email>kruchinin_01@inbox.ru</email>
     <xref ref-type="aff" rid="aff-1"/>
    </contrib>
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Сирук</surname>
       <given-names>Степан Александрович</given-names>
      </name>
      <name xml:lang="en">
       <surname>Siruk</surname>
       <given-names>Stepan Aleksandrovich</given-names>
      </name>
     </name-alternatives>
     <email>sstepana001@mail.ru</email>
     <xref ref-type="aff" rid="aff-2"/>
    </contrib>
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Майоров</surname>
       <given-names>Андрей Георгиевич</given-names>
      </name>
      <name xml:lang="en">
       <surname>Mayorov</surname>
       <given-names>Andrey Georgievich</given-names>
      </name>
     </name-alternatives>
     <email>agmayorov@mephi.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 contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Малахов</surname>
       <given-names>Виталий Валерьевич</given-names>
      </name>
      <name xml:lang="en">
       <surname>Malakhov</surname>
       <given-names>Vitaly Valerievich</given-names>
      </name>
     </name-alternatives>
     <email>vvmalakhov@mephi.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 contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Александрин</surname>
       <given-names>Сергей Юрьевич</given-names>
      </name>
      <name xml:lang="en">
       <surname>Aleksandrin</surname>
       <given-names>Sergey Yur'evich</given-names>
      </name>
     </name-alternatives>
     <email>SYaleksandrin@mephi.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">Национальный исследовательский ядерный университет «МИФИ»</institution>
    </aff>
    <aff>
     <institution xml:lang="en">National Research Nuclear University “MEPhI”</institution>
    </aff>
   </aff-alternatives>
   <aff-alternatives id="aff-2">
    <aff>
     <institution xml:lang="ru">Национальный исследовательский ядерный университет МИФИ</institution>
     <city>Moscow</city>
     <country>Россия</country>
    </aff>
    <aff>
     <institution xml:lang="en">National Research Nuclear University</institution>
     <city>Moscow</city>
     <country>Russian Federation</country>
    </aff>
   </aff-alternatives>
   <aff-alternatives id="aff-3">
    <aff>
     <institution xml:lang="ru">Национальный исследовательский ядерный  университет «МИФИ»</institution>
     <city>Москва</city>
     <country>Россия</country>
    </aff>
    <aff>
     <institution xml:lang="en">National Research Nuclear University MEPhI</institution>
     <city>Moscow</city>
     <country>Russian Federation</country>
    </aff>
   </aff-alternatives>
   <pub-date publication-format="print" date-type="pub" iso-8601-date="2025-06-26T16:59:24+03:00">
    <day>26</day>
    <month>06</month>
    <year>2025</year>
   </pub-date>
   <pub-date publication-format="electronic" date-type="pub" iso-8601-date="2025-06-26T16:59:24+03:00">
    <day>26</day>
    <month>06</month>
    <year>2025</year>
   </pub-date>
   <volume>11</volume>
   <issue>2</issue>
   <fpage>132</fpage>
   <lpage>138</lpage>
   <history>
    <date date-type="received" iso-8601-date="2025-03-29T00:00:00+03:00">
     <day>29</day>
     <month>03</month>
     <year>2025</year>
    </date>
    <date date-type="accepted" iso-8601-date="2025-05-12T00:00:00+03:00">
     <day>12</day>
     <month>05</month>
     <year>2025</year>
    </date>
   </history>
   <self-uri xlink:href="https://zh-szf.ru/en/nauka/article/100205/view">https://zh-szf.ru/en/nauka/article/100205/view</self-uri>
   <abstract xml:lang="ru">
    <p>Нейтронные мониторы (НМ), расположенные в разных точках планеты, позволяют проводить исследования временных, энергетических и угловых характеристик потоков галактических  и солнечных частиц. Поскольку НМ находятся внутри магнитосферы Земли, их отклик зависит от места на поверхности планеты, которое можно характеризовать жесткостью геомагнитного обрезания (ЖГО). Рассчитанные значения ЖГО зависят от модели магнитного поля, даты и даже от численных методов. В работе приводятся вычисленные значения ЖГО в местах расположения некоторых нейтронных мониторов и проводится сравнение полученных значений с результатами расчетов других авторов, включая сопоставление временной динамики за последнее десятилетие. Показано, что значения ЖГО, полученные для 2020 г. в модели IGRF-14, отличаются от таковых в IGRF-13, однако уже для 2015 г. эта разница оказывается пренебрежимо мала. Продемонстрирована тенденция к уменьшению ЖГО со временем, особенно сильно проявляющаяся    на средних широтах. Сравнение полученных нами значений ЖГО с результатами других авторов показало, что в большинстве случаев разница не превышает 0.2 ГВ. Подобные отклонения существенны лишь в приполярной области, где основную роль  в экранировании частиц играет не магнитное поле Земли, а ее атмосфера. Показано, что точность используемого алгоритма сопоставима с точностью других алгоритмов и достаточна для расчетов отклика нейтронных мониторов.</p>
   </abstract>
   <trans-abstract xml:lang="en">
    <p>Neutron monitors (NMs), located at different points on the planet, allow us to study the time, energy, and angular characteristics of galactic and solar particle fluxes. Since NMs are located inside Earth's magnetosphere, their response depends on their location on the planet's surface that can be characterized by the geomagnetic cutoff rigidity. Its calculation depends on the magnetic field model, the date, and even on numerical methods. The paper presents calculated geomagnetic cutoff rigidities at the locations of some neutron monitors, and compares the cutoff values with the calculation results obtained by other authors, including a comparison of the time dynamics over the past decade. We show that the geomagnetic cutoff rigidities obtained for 2020 by the IGRF-14 model differ from those derived by IGRF-13; however, for 2015 the difference between the models is negligible. We demonstrate a tendency for the geomagnetic cutoff rigidity to decrease over time, especially at midlatitudes. Comparison of the obtained geomagnetic cutoff rigidities with those obtained by other authors has shown that in most cases the difference does not exceed 0.2 GV. Such discrepancies are significant only in the circumpolar region, where particles are mostly shielded by Earth’s atmosphere rather than by the geomagnetic field. We show that the accuracy of the algorithm in use is comparable to that of other existing instruments and is sufficient for calculating neutron monitor responses.</p>
   </trans-abstract>
   <kwd-group xml:lang="ru">
    <kwd>геомагнитное поле</kwd>
    <kwd>жесткость геомагнитного обрезания</kwd>
    <kwd>космические лучи</kwd>
    <kwd>нейтронные мониторы</kwd>
   </kwd-group>
   <kwd-group xml:lang="en">
    <kwd>geomagnetic field</kwd>
    <kwd>geomagnetic cutoff rigidity</kwd>
    <kwd>cosmic rays</kwd>
    <kwd>neutron monitors</kwd>
   </kwd-group>
   <funding-group>
    <funding-statement xml:lang="ru">Работа выполнена при поддержке Российского научного фонда, проект № 20-72-10170-П</funding-statement>
    <funding-statement xml:lang="en">The work was financially supported by the Russian Science Foundation (Project No. 20-72-10170-P)</funding-statement>
   </funding-group>
  </article-meta>
 </front>
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