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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Cosmic Research</journal-id><journal-title-group><journal-title xml:lang="en">Cosmic Research</journal-title><trans-title-group xml:lang="ru"><trans-title>Космические исследования</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0023-4206</issn><issn publication-format="electronic">3034-5502</issn><publisher><publisher-name xml:lang="en">The Russian Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">682922</article-id><article-id pub-id-type="doi">10.31857/S0023420625010022</article-id><article-id pub-id-type="edn">HEWOWK</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Статьи</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Observations of hard x-ray emission of solar flares on the cubsat satellites of the Moscow University group</article-title><trans-title-group xml:lang="ru"><trans-title>Наблюдения жесткого рентгеновского излучения солнечных вспышек на спутниках формата кубсат группировки Московского университета</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Bogomolov</surname><given-names>A. V.</given-names></name><name xml:lang="ru"><surname>Богомолов</surname><given-names>А. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Skobeltsyn Institute of Nuclear Physics</p></bio><bio xml:lang="ru"><p>Научно-исследовательский институт ядерной физики имени Д.В. Скобельцына</p></bio><email>aabboogg@srd.sinp.msu.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Bogomolov</surname><given-names>V. V.</given-names></name><name xml:lang="ru"><surname>Богомолов</surname><given-names>В. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Skobeltsyn Institute of Nuclear Physics, Faculty of Physics</p></bio><bio xml:lang="ru"><p>Научно-исследовательский институт ядерной физики имени Д.В. Скобельцына, физический факультет</p></bio><email>aabboogg@srd.sinp.msu.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Iyudin</surname><given-names>A. F.</given-names></name><name xml:lang="ru"><surname>Июдин</surname><given-names>А. Ф.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Skobeltsyn Institute of Nuclear Physics</p></bio><bio xml:lang="ru"><p>Научно-исследовательский институт ядерной физики имени Д.В. Скобельцына</p></bio><email>aabboogg@srd.sinp.msu.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Myagkova</surname><given-names>I. N.</given-names></name><name xml:lang="ru"><surname>Мягкова</surname><given-names>И. Н.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Skobeltsyn Institute of Nuclear Physics</p></bio><bio xml:lang="ru"><p>Научно-исследовательский институт ядерной физики имени Д.В. Скобельцына </p></bio><email>aabboogg@srd.sinp.msu.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Svertilov</surname><given-names>S. I.</given-names></name><name xml:lang="ru"><surname>Свертилов</surname><given-names>С. И.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Skobeltsyn Institute of Nuclear Physics, Faculty of Physics</p></bio><bio xml:lang="ru"><p>Научно-исследовательский институт ядерной физики имени Д.В. Скобельцына, физический факультет</p></bio><email>aabboogg@srd.sinp.msu.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Lomonosov Moscow State University</institution></aff><aff><institution xml:lang="ru">Московский государственный университет имени М.В. Ломоносова</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2025-01-15" publication-format="electronic"><day>15</day><month>01</month><year>2025</year></pub-date><volume>63</volume><issue>1</issue><fpage>13</fpage><lpage>22</lpage><history><date date-type="received" iso-8601-date="2025-06-05"><day>05</day><month>06</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2025, Russian Academy of Sciences</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2025, Российская академия наук</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="en">Russian Academy of Sciences</copyright-holder><copyright-holder xml:lang="ru">Российская академия наук</copyright-holder></permissions><self-uri xlink:href="https://journals.eco-vector.com/0023-4206/article/view/682922">https://journals.eco-vector.com/0023-4206/article/view/682922</self-uri><abstract xml:lang="en"><p>The possibilities of using cubesat nanosatellites to detect the hard X-ray radiation (HXR) from solar flares are shown. The results of HXR measurements of several flares in the energy range &gt;30 keV using the DeCoR-1 and DeCoR-3 instruments installed on the <italic>Avion</italic> satellite are presented, as well as a table of flares observed in HXR on the MSU constellation cubesats from September 2023 to February 2024.</p></abstract><trans-abstract xml:lang="ru"><p>В работе показаны возможности использования наноспутников формата кубсат для регистрации жесткого рентгеновского излучения (ЖРИ) солнечных вспышек. Приводятся результаты измерений ЖРИ нескольких вспышек в диапазоне энергий &gt;30 кэВ приборами ДеКоР-1 и ДеКоР-3, установленными на спутнике <italic>Авион</italic>, а также таблица вспышек, наблюдавшихся в ЖРИ на кубсатах группировки МГУ с сентября 2023 г. по февраль 2024 г.</p></trans-abstract><funding-group><award-group><funding-source><institution-wrap><institution xml:lang="ru">Российский Научный Фонд</institution></institution-wrap><institution-wrap><institution xml:lang="en">Russian Science Foundation</institution></institution-wrap></funding-source><award-id>23-42-10005</award-id></award-group><award-group><funding-source><institution-wrap><institution xml:lang="ru">Правительство РФ</institution></institution-wrap><institution-wrap><institution xml:lang="en">The Russian Government</institution></institution-wrap></funding-source><award-id>24-Ш01-05</award-id></award-group></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Fletcher L., Dennis B.R., Hudson H.S. et al. 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