<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE root>
<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">Astronomy Reports</journal-id><journal-title-group><journal-title xml:lang="en">Astronomy Reports</journal-title><trans-title-group xml:lang="ru"><trans-title>Астрономический журнал</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0004-6299</issn><issn publication-format="electronic">3034-5170</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">647687</article-id><article-id pub-id-type="doi">10.31857/S0004629924120062</article-id><article-id pub-id-type="edn">ICLIPB</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">Search for interpulses in a complete sample of pulsars at a frequency of 111 MHz</article-title><trans-title-group xml:lang="ru"><trans-title>Поиск интерпульсов в полной выборке пульсаров на частоте 111 МГц</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Toropov</surname><given-names>M. O.</given-names></name><name xml:lang="ru"><surname>Торопов</surname><given-names>М. О.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>serg@prao.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Tyul’bashev</surname><given-names>S. A.</given-names></name><name xml:lang="ru"><surname>Тюльбашев</surname><given-names>С. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Astro-Space Center, Pushchino radio astronomy observatory</p></bio><bio xml:lang="ru"><p>Астрокосмический центр, Пущинская радиоастрономическая обсерватория</p></bio><email>serg@prao.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Beskin</surname><given-names>V. S.</given-names></name><name xml:lang="ru"><surname>Бескин</surname><given-names>В. С.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>serg@prao.ru</email><xref ref-type="aff" rid="aff2"/><xref ref-type="aff" rid="aff3"/></contrib></contrib-group><aff id="aff1"><institution>LLC TEK Inform</institution></aff><aff-alternatives id="aff2"><aff><institution xml:lang="en">Lebedev Physical Institute</institution></aff><aff><institution xml:lang="ru">Физический институт им. П. Н. Лебедева</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Moscow Institute of Physics and Technology (MIPT)</institution></aff><aff><institution xml:lang="ru">Московский физико-технический институт (Национальный исследовательский университет)</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2024-12-15" publication-format="electronic"><day>15</day><month>12</month><year>2024</year></pub-date><volume>101</volume><issue>12</issue><fpage>1084</fpage><lpage>1094</lpage><history><date date-type="received" iso-8601-date="2025-01-28"><day>28</day><month>01</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2024, The Russian Academy of Sciences</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2024, Российская академия наук</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="en">The 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/0004-6299/article/view/647687">https://journals.eco-vector.com/0004-6299/article/view/647687</self-uri><abstract xml:lang="en"><p>An interpulse search was carried out in a sample of 96 pulsars observed on the Large Phased Array (LPA) radio telescope in the Pushchino Multibeams Pulsar Search (PUMPS). The pulsar sample is complete for pulsars having a signal-to-noise ratio (<italic>S/N</italic>) in the main pulse (MP) greater than 40. To search for weak interpulses (IP), the addition of average profiles over an interval of up to 10 years was used. Interpulses were detected in 12 pulsars (12.5% of the sample), of which 7 pulsars have an interpulse located near the 180◦ phase relative to the main pulse (probable orthogonal rotators), and 5 have phases far from 180◦ (probable coaxial rotators). The amplitude ratios of IP/MP are in the range of 0.004−0.023, the median value is 0.01. Estimates of the observed number of coaxial and orthogonal rotators with IP/MP ≥0.01 do not contradict the model according to which, during evolution, the magnetic axis and the axis of rotation become orthogonal.</p></abstract><trans-abstract xml:lang="ru"><p>Проведен поиск интерпульсов в выборке 96 пульсаров, наблюдавшихся на радиотелескопе Большая Синфазная Антенна (БСА) в Пущинском многолучевом поиске пульсаров (PUMPS). Выборка пульсаров является полной для пульсаров, имеющих отношение сигнала к шуму (<italic>S</italic>/<italic>N</italic>) в главном импульсе (MP) больше 40. Для поиска слабых интерпульсов (IP) использовалось сложение средних профилей на интервале до 10 лет. У 12 пульсаров обнаружены интерпульсы (12.5% от выборки), из них у семи пульсаров интерпульс располагается вблизи фазы 180◦ относительно главного импульса (вероятные ортогональные ротаторы), а у пяти — на фазах, далеких от 180◦ (вероятные соосные ротаторы). Отношения амплитуд IP/MP находятся в пределах 0.004—0.023, медианное значение составляет 0.01. Оценки наблюдаемого количества соосных и ортогональных ротаторов, у которых IP/MP ≥0.01, не противоречат модели, согласно которой в ходе эволюции магнитная ось и ось вращения становятся ортогональными.</p></trans-abstract><kwd-group xml:lang="en"><kwd>pulsar</kwd><kwd>interpulse</kwd><kwd>coaxial (alignment) rotator</kwd><kwd>orthogonal (counter-alignment) rotator</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>пульсары</kwd><kwd>интерпульсы</kwd><kwd>соосный ротатор</kwd><kwd>ортогональный ротатор</kwd></kwd-group><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>22–12–00236</award-id></award-group></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>R.N. Manchester, G.B. Hobbs, A. Teoh, and M. Hobbs, Astron. J. 129(4), 1993 (2005).</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>J. Gil, Astron. and Astrophys. 127, 267 (1983).</mixed-citation></ref><ref id="B3"><label>3.</label><mixed-citation>K. Maciesiak, J. Gil, and V.A.R.M. Ribeiro, Monthly Not. Roy. Astron. Soc. 414(2), 1314 (2011).</mixed-citation></ref><ref id="B4"><label>4.</label><mixed-citation>D.R. Lorimer and M. Kramer, Handbook of Pulsar Astronomy (Cambridge, UK: Cambridge University Press, 2012).</mixed-citation></ref><ref id="B5"><label>5.</label><mixed-citation>L. Davis and M. Goldstein, Astrophys. J. Letters 159, L81 (1970).</mixed-citation></ref><ref id="B6"><label>6.</label><mixed-citation>R.N. Manchester and A.G. Lyne, Monthly Not. Roy. Astron. Soc. 181, 761 (1977).</mixed-citation></ref><ref id="B7"><label>7.</label><mixed-citation>P. Goldreich, Astrophys. J. Letters 160, L11 (1970).</mixed-citation></ref><ref id="B8"><label>8.</label><mixed-citation>A. Philippov, A. Tchekhovskoy, and J.G. Li, Monthly Not. Roy. Astron. Soc. 441(3), 1879 (2014).</mixed-citation></ref><ref id="B9"><label>9.</label><mixed-citation>V.S. Beskin, A.V. Gurevich, and Y.N. Istomin, Physics of the Pulsar Magnetosphere (Cambridge, New York: Cambridge University Press, 1993).</mixed-citation></ref><ref id="B10"><label>10.</label><mixed-citation>A.G. Lyne, C.A. Jordan, F. Graham-Smith, C.M. Espinoza, B.W. Stappers, and P. Weltevrede, Monthly Not. Roy. Astron. Soc. 446(1), 857 (2015).</mixed-citation></ref><ref id="B11"><label>11.</label><mixed-citation>V.I. Shishov, I.V. Chashei, V.V. Oreshko, S.V. Logvinenko, et al., Astron. Rep. 60(12), 1067 (2016).</mixed-citation></ref><ref id="B12"><label>12.</label><mixed-citation>S.A. Tyul’bashev, V.S. Tyul’bashev, V.V. Oreshko, and S.V. Logvinenko, Astron. Rep. 60(2), 220 (2016).</mixed-citation></ref><ref id="B13"><label>13.</label><mixed-citation>S.A. Tyul’bashev, P.Y. Golysheva, V.S. Tyul’bashev, and I.A. Subaev, Astron. Rep. 63(11), 920 (2019).</mixed-citation></ref><ref id="B14"><label>14.</label><mixed-citation>S.A. Tyul’bashev, M.A. Kitaeva, and G.E. Tyul’basheva, Monthly Not. Roy. Astron. Soc. 517(1), 1112 (2022).</mixed-citation></ref><ref id="B15"><label>15.</label><mixed-citation>S.A. Tyul’bashev, G.E. Tyul’basheva, M.A. Kitaeva, I.L. Ovchinnikov, V.V. Oreshko, and S.V. Logvinenko, Monthly Not. Roy. Astron. Soc. 528(2), 2220 (2024).</mixed-citation></ref><ref id="B16"><label>16.</label><mixed-citation>I.F. Malov and E.B. Nikitina, Astron. Rep. 57(11), 833 (2013).</mixed-citation></ref><ref id="B17"><label>17.</label><mixed-citation>A.D. Kuz’min, B.Ya. Losovskii, and K.A. Lapaev, Astron. Rep. 51(8), 615 (2007).</mixed-citation></ref><ref id="B18"><label>18.</label><mixed-citation>A.V. Pynzar’ and V.I. Shishov, Astron. Rep. 52(8), 623 (2008).</mixed-citation></ref><ref id="B19"><label>19.</label><mixed-citation>P. Weltevrede and S. Johnston, Monthly Not. Roy. Astron. Soc. 387(4), 1755 (2008).</mixed-citation></ref><ref id="B20"><label>20.</label><mixed-citation>P.F. Wang, J.L. Han, J. Xu, C. Wang, et al., Res. Astron. and Astrophys. 3(10), id. 104002 (2023).</mixed-citation></ref><ref id="B21"><label>21.</label><mixed-citation>B. Posselt, A. Karastergiou, S. Johnston, A. Parthasarathy, et al., Monthly Not. Roy. Astron. Soc. 520(3), 4582 (2023).</mixed-citation></ref><ref id="B22"><label>22.</label><mixed-citation>E.M. Novoselov, V.S. Beskin, A.K. Galishnikova, M.M. Rashkovetskyi, and A.V. Biryukov, Monthly Not. Roy. Astron. Soc. 494(3), 3899 (2020).</mixed-citation></ref><ref id="B23"><label>23.</label><mixed-citation>L.I. Arzamasskiy, V.S. Beskin, and K.K. Pirov, Monthly Not. Roy. Astron. Soc. 466(2), 2325 (2017).</mixed-citation></ref><ref id="B24"><label>24.</label><mixed-citation>A. Spitkovsky, Astrophys. J. Letters 648(1), L51 (2006).</mixed-citation></ref></ref-list></back></article>
