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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">msi</journal-id><journal-title-group><journal-title xml:lang="ru">Современная наука и инновации</journal-title><trans-title-group xml:lang="en"><trans-title>Modern Science and Innovations</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2307-910X</issn><publisher><publisher-name>North-Caucasus Federal University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.37493/2307-910X.2025.3.11</article-id><article-id custom-type="elpub" pub-id-type="custom">msi-1787</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>КРАТКИЕ СООБЩЕНИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>SHORT REPORTS</subject></subj-group></article-categories><title-group><article-title>Неустойчивость акустических колебаний под действием излучения</article-title><trans-title-group xml:lang="en"><trans-title>Instability of acoustic oscillations under the influence of radiation</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Манкаева</surname><given-names>Г. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Mankaeva</surname><given-names>G. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Манкаева Галина Алексеевна, старший преподаватель кафедры теоретической физики</p><p>phone number: +79061764200</p><p>д. 11, ул. Пушкина, г. Элиста</p></bio><bio xml:lang="en"><p>Mankaeva Galina Alekseevna, Senior Lecturer at the Department of Theoretical Physics</p><p>phone number: +79061764200</p><p>11, Pushkina Street, Elista</p></bio><email xlink:type="simple">mankaeva.galina@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Дертеев</surname><given-names>С. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Derteev</surname><given-names>S. B.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Дертеев Сергей Бадмаевич, старший преподаватель кафедры теоретической физики</p><p>phone number: +79613963655</p><p>д. 11, ул. Пушкина, г. Элиста</p></bio><bio xml:lang="en"><p>Derteev Sergey Badmaevich, Senior Lecturer at the Department of Theoretical Physics</p><p>phone number: +79613963655</p><p>11, Pushkina Street, Elista</p></bio><email xlink:type="simple">derteevsergei@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Агеев</surname><given-names>С. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Ageev</surname><given-names>S. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Агеев Сергей Сергеевич, младший научный сотрудник</p><p>phone number: +79093998719</p><p>д. 11, ул. Пушкина, г. Элиста</p></bio><bio xml:lang="en"><p>Ageev Sergey Sergeevich, Junior Researcher</p><p>phone number: +79093998719</p><p>11, Pushkina Street, Elista</p></bio><email xlink:type="simple">stankevsk@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Балтыков</surname><given-names>А. К.</given-names></name><name name-style="western" xml:lang="en"><surname>Baltykov</surname><given-names>A. K.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Балтыков Арслан Константинович, старший преподаватель кафедры природообустройства и охраны окружающей среды</p><p>phone number: +79371951901</p><p>д. 11, ул. Пушкина, г. Элиста</p></bio><bio xml:lang="en"><p>Baltykov Arslan Konstantinovich, Senior Lecturer at the Department of Environmental Management and Protection</p><p>phone number: +79371951901</p><p>11, Pushkina Street, Elista</p></bio><email xlink:type="simple">balars90@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Михаляев</surname><given-names>Б. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Mikhalyayev</surname><given-names>B. B.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Михаляев Бадма Борисович, заведующий кафедрой теоретической физики</p><p> phone number: +79613967444</p><p>д. 11, ул. Пушкина, г. Элиста</p></bio><bio xml:lang="en"><p>Mikhalyayev Badma Borisovich, Head of the Department of Theoretical Physics</p><p>phone number: +79371951901</p><p>11, Pushkina Street, Elista</p></bio><email xlink:type="simple">bbmikh@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Калмыцкий государственный университет имени Б. Б. Городовикова</institution><country>Россия</country></aff><aff xml:lang="en"><institution>State University named after B. B. Gorodovikov</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>26</day><month>01</month><year>2026</year></pub-date><volume>0</volume><issue>3</issue><fpage>116</fpage><lpage>122</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Манкаева Г.А., Дертеев С.Б., Агеев С.С., Балтыков А.К., Михаляев Б.Б., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Манкаева Г.А., Дертеев С.Б., Агеев С.С., Балтыков А.К., Михаляев Б.Б.</copyright-holder><copyright-holder xml:lang="en">Mankaeva G.A., Derteev S.B., Ageev S.S., Baltykov A.K., Mikhalyayev B.B.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://msi.elpub.ru/jour/article/view/1787">https://msi.elpub.ru/jour/article/view/1787</self-uri><abstract><p>Введение. Интенсивность излучения высокотемпературной плазмы солнечной короны существенно зависит от температуры, причем эта зависимость носит сложный характер, поскольку вклад различных источников излучения крайне неоднороден, особенно в линиях излучения элементов, входящих в состав короны. Результаты и обсуждение. Например, в диапазоне температур 0,5–1 МК наблюдается сильный рост функции излучения, а в диапазоне 1– 4,5 МК наблюдается столь же быстрый спад. В области затухания возможна адиабатическая неустойчивость колебаний плотности плазмы, обусловленная быстрым затуханием. Заключение. С использованием ранее полученной кубической сплайн-интерполяции функции излучения исследована адиабатическая неустойчивость и определены границы интервала неустойчивости, которые подтверждаются другими расчетами.</p></abstract><trans-abstract xml:lang="en"><p>Introduction. The radiation intensity of the high-temperature plasma of the solar corona depends strongly on temperature, and this dependence is complex, as the contributions of various radiation sources are highly nonuniform, particularly in the emission lines of elements inhabiting the corona. Results and discussion. For example, in the temperature range of 0.5-1 MK there is a strong increase in the radiation function, and in the range of 1-4.5 MK there is a similarly rapid decline. In the damping range, adiabatic instability of plasma density oscillations is possible, due to the rapid damping rate. Conclusion. Using previously obtained cubic spline interpolation of the radiation function, the adiabatic instability was studied, and the boundaries of the instability interval were determined, which are confirmed by other calculations.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>компьютерное моделирование</kwd><kwd>физика плазмы</kwd><kwd>функция излучения</kwd><kwd>магнитная гидродинамика</kwd><kwd>Солнце</kwd><kwd>колебания и волны</kwd></kwd-group><kwd-group xml:lang="en"><kwd>сomputer modeling</kwd><kwd>plasma physics</kwd><kwd>radiation function</kwd><kwd>magnetic hydrodynamic</kwd><kwd>Sun</kwd><kwd>oscillations and waves</kwd></kwd-group><funding-group><funding-statement xml:lang="en">The study was carried out within the framework of the state assignment of the Ministry of Education and Science of the Russian Federation (No. 075-03-2024-113).</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Priest E.R. 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