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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">18503</article-id>
   <article-id pub-id-type="doi">10.12737/szf-41201802</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">Intensity of emission lines of the quiescent solar corona: comparison between calculated and observed values</article-title>
    <trans-title-group xml:lang="ru">
     <trans-title>Интенсивность эмиссионных линий короны спокойного Солнца: сравнение расчетных и наблюдательных данных</trans-title>
    </trans-title-group>
   </title-group>
   <contrib-group content-type="authors">
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Криссинель</surname>
       <given-names>Борис Болеславович</given-names>
      </name>
      <name xml:lang="en">
       <surname>Krissinel</surname>
       <given-names>Boris Boleslavovich</given-names>
      </name>
     </name-alternatives>
     <email>krissinel@iszf.irk.ru</email>
     <bio xml:lang="ru">
      <p>доктор физико-математических наук;</p>
     </bio>
     <bio xml:lang="en">
      <p>doctor of physical and mathematical sciences;</p>
     </bio>
     <xref ref-type="aff" rid="aff-1"/>
    </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>
   <volume>4</volume>
   <issue>1</issue>
   <fpage>14</fpage>
   <lpage>27</lpage>
   <self-uri xlink:href="https://zh-szf.ru/en/nauka/article/18503/view">https://zh-szf.ru/en/nauka/article/18503/view</self-uri>
   <abstract xml:lang="ru">
    <p>Приведены результаты расчета центр—лимб интенсивности оптически тонких линий УФ-диапазона волн многокомпонентной модели спокойной короны Солнца. &#13;
Модель представляет собой совокупность ранжированных по размерам петель, спикул и свободного (межпетельного) вещества. Теоретические значения интенсивности находятся по вероятностям встречи по линии зрения участков петель с учетом вероятности отсутствия при этом других компонент короны. В модели используются 12 петель размера-ми от 3200 км до 210 000 км, с различными величинами коэффициента заполнения и давления в основании и в вершине петли. Температура вершин петель — 1 400 000 K. При расчетах использована база данных CHIANTI. Сравнение теоретических и экспериментальных значений интенсивности корональных линий, а также линий переходной зоны, полученных на телескопах SUMER, CDS и EIS, показало достаточно удовлетворительное согласие их, особенно для данных центра диска Солнца. Для данных над лимбом повышенные значения расхождений в результате анализа объясняются погрешностями измерений спектрометра EIS.</p>
   </abstract>
   <trans-abstract xml:lang="en">
    <p>The paper reports the results of calculations of the center-to-limb intensity of optically thin line emission in EUV and FUV wavelength ranges. The calculations employ a multicomponent model for the quiescent solar corona. &#13;
The model includes a collection of loops of various sizes, spicules, and free (inter-loop) matter. Theoretical intensity values are found from probabilities of encountering parts of loops in the line of sight with respect to the probability of absence of other coronal components. The model uses 12 loops with sizes from 3200 to 210000 km with different values of rarefaction index and pressure at the loop base and apex. The temperature at loop apices is 1 400 000 K. The calculations utilize the CHIANTI database. The comparison between theoretical and observed emission intensity values for coronal and transition region lines obtained by the SUMER, CDS, and EIS telescopes shows quite satisfactory agreement between them, particularly for the solar disk center. For the data acquired above the limb, the enhanced discrepancies after the analysis refer to errors in EIS measurements.</p>
   </trans-abstract>
   <kwd-group xml:lang="ru">
    <kwd>Солнце-корона</kwd>
    <kwd>УФ-излучение</kwd>
    <kwd>атомные данные</kwd>
   </kwd-group>
   <kwd-group xml:lang="en">
    <kwd>Sun-corona</kwd>
    <kwd>UV radiation</kwd>
    <kwd>atomic data</kwd>
   </kwd-group>
  </article-meta>
 </front>
 <body>
  <p>ВВЕДЕНИЕИзмерения характеристик корональной плазмы важны для понимания различных процессов, происходящих в солнечной атмосфере, таких как нагрев короны и выбросы корональной массы, а также структуры и физических характеристик активных областей, протуберанцев и корональных дыр. Исследования короны в УФ-диапазоне волн ведутся давно, и в настоящее время ряд превосходных спектрографов на борту спутников дает возможность детальной диагностики электронной плотности и температуры солнечной плазмы. Диагностика по наблюдаемым интенсивностям оптически тонких линий [Mason, Monsignori Fossi, 1994; Laming et al., 1997] использует расчеты излучения переходов возбужденных уровней ионов. Созданная в 1997 г. и непрерывно уточняемая база атомных данных CHIANTI [Dere et al., 1997; Landi et al., 2012] содержит среди прочего пакет программ для таких расчетов.К настоящему времени опубликовано достаточно большое число работ по исследованию плазмы спокойных участков Солнца и активных областей. Анализ эмиссионных линий УФ дает представление о характеристиках плазмы, но в то же время позволяет выявлять проблемы, возникающие из-за неточности атомных данных и погрешностей при обработке спектрогелиограмм. Атомные данные в значительной мере являются расчетными, и проверка правильности расчетов может быть осуществлена по стабильному источнику излучения, каковым представляется излучение спокойных участков атмосферы Солнца. Исследованию спокойной короны над лимбом на расстояниях 1.03–1.3 солнечного радиуса посвящены работы [Feldman et al., 1998, 1999; Warren, 1999; Allen et al., 2000; Landi et al., 2002a, 2002b; Warren, Warshall, 2002; Feldman, 2003; Mo-han et al., 2003; Parenti et al., 2003; Warren, Brooks, 2009], в которых принималось, что плазма на таких высотах изотермальная.В работах [Warren, 2005; Brooks, Warren, 2006; Brooks et al., 2009] исследовалась плазма при наблюдениях в центре диска Солнца. В этом случае температура излучающего слоя принималась равной температуре максимума ионизации данного иона. Оценить правомерность таких приближений можно путем расчета интенсивности эмиссионных линий по модели спокойных участков Солнца.В настоящей работе использована многокомпонентная модель короны спокойного Солнца [Krissinel, 2015], позволившая получить экваториальные распределения центр-лимб в диапазоне волн от 1 до 100 см, хорошо совпадающие с эксперименталь-ными данными. В этой модели распределение компонент по диску Солнца представляет собой случайный процесс, дисперсия и среднее значения которого неизменны. В таком случае излучение Солнца может быть представлено излучением дискретного набора компонент короны.Целью данной работы является сравнение расчетов интенсивности излучения по модели солнечной короны, созданной по радионаблюдениям, с результатами наблюдений эмиссионных EUV- и FUV-линий на спектрографах SOHO/CDS, SOHO/SUMER и HINODE/EIS, опубликованными в литературе. При адаптации модели к расчетам экваториального распределения интенсивности корональных линий особое внимание было обращено на выбор типа фракционной ионизации, а также на высотные профили плотности и температуры в переходной области петель. </p>
 </body>
 <back>
  <ref-list>
   <ref id="B1">
    <label>1.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Гетман К.В., Лившиц М.А. Модель внешней атмосферы Солнца, лишенной активности // АЖ. 1996. Т. 73. С. 119-124.</mixed-citation>
     <mixed-citation xml:lang="en">Allen R., Landi E., Landini M., Bromage G.E. An empirical test of different ionization balance calculations in an isothermal solar plasma. Astron. Astrophys. 2000, vol. 358, pp. 332-342.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B2">
    <label>2.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Allen R., Landi E., Landini M., Bromage G.E. An empirical test of different ionization balance calculations in an isothermal solar plasma // Astron. Astrophys. 2000. V. 358. P. 332-342.</mixed-citation>
     <mixed-citation xml:lang="en">Binello A.M., Landi E., Mason H.E., Storey P.J., Brosius J.W. A comparison between theoretical and solar Fe XII UV line intensity ratios. Astron. Astrophys. 2001, vol. 370, pp. 1071-1087. DOI: 10.1051/ 0004-6361:20010255.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B3">
    <label>3.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Binello A.M., Landi E., Mason H.E., et al. A comparison between theoretical and solar Fe XII UV line intensity ratios // Astron. Astrophys. 2001. V. 370. P. 1071-1087. DOI: 10.1051/ 0004-6361:20010255.</mixed-citation>
     <mixed-citation xml:lang="en">Borovik V.N., Kurbanov M.Sh., Makarov V.V. Distribution on radio brightness of the quiet Sun in the 2-32 cm range. Soviet Aston. 1992, vol. 36, no. 9, pp. 656-663.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B4">
    <label>4.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Borovik V.N., Kurbanov M.Sh., Makarov V.V. Distribution on radio brightness of the quiet Sun in the 2-32 cm range // Soviet Astron. 1992. V. 36, N. 9. P. 656-663.</mixed-citation>
     <mixed-citation xml:lang="en">Brooks D.H., Warren H.P. The intercalibration of SOHO EIT, CDS-NIS, and TRACE. Astrophys. J. Suppl. Ser. 2006, vol. 164, no. 1, pp. 202-214.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B5">
    <label>5.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Brooks D.H., Warren H.P. The intercalibration of SOHO EIT, CDS-NIS, and TRACE // Astrophys. J. Suppl. Ser. 2006. V. 164, N 1. P. 202-214.</mixed-citation>
     <mixed-citation xml:lang="en">Brooks D.H, Warren H.P, Williams D.R., Watanabe T. HINODE/extreme - ultraviolet imaging spectrometer observations of the temperature structure of the quiet corona. Astrophys. J. 2009, vol. 705, no. 1, pp. 1522-1532. DOI: 10.1088/ 0004-637X/705/2/1522.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B6">
    <label>6.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Brooks D.H., Warren H.P., Williams D.R., Watanabe T. HINODE/Extreme-ultraviolet Imaging Spectrometer observations of the temperature structure of the quiet corona // Astrophys. J. 2009. V. 705, N 1. P. 1522-1532. DOI: 10.1088/ 0004-637X/705/2/1522.</mixed-citation>
     <mixed-citation xml:lang="en">Brown C.M., Feldman U., Seely J.F., Korendyke C.M., Hara H. Wavelengths and intensities of spectral lines in the 171-211 and 245-291 Ǻ ranges from five solar regions recorded by Extreme-ultraviolet Imaging Spectrometer (EIS) on Hinode. Astrophys. J. Suppl. Ser. 2008. vol. 176. pp. 511-535.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B7">
    <label>7.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Brown C.M., Feldman U., Seely J.F., et al. Wavelengths and intensities of spectral lines in the 171-211 and 245-291 Ǻ ranges from five solar regions recorded by Extreme-ultraviolet Imaging Spectrometer (EIS) on Hinode // Astrophys. J. Suppl. Ser. 2008. V. 176. P. 511-535.</mixed-citation>
     <mixed-citation xml:lang="en">Bryans P., Landi E., Savin D.W. A new approach analyzing solar spectra and updaten collisional ionization equilibrium calculations. II. Updaten ionization rate coefficients. Astrophys. J. 2009, vol. 691, no. 2, pp. 1540-1559. DOI: 10.1088/0004-637X/691/2/1540.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B8">
    <label>8.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Bryans P., Landi E., Savin D.W. A new approach analyzing solar spectra and updaten collisional ionization equilibrium calculations. II. Updaten ionization rate coefficients // Astrophys. J. 2009. V. 691, N 2. P. 1540-1559. DOI: 10.1088/ 0004-637X/691/2/1540.</mixed-citation>
     <mixed-citation xml:lang="en">Dere K.P., Landi E., Mason H.E., et al. CHI-ANTI - an atomic database for emission lines. Astron. Astrophys. Suppl. Ser. 1997, vol. 125, pp. 149-173.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B9">
    <label>9.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Dere K.P., Landi E., Mason H.E., et al. CHI-ANTI - an atomic database for emission lines// Astron. Astrophys. Suppl. Ser. 1997. V. 125. P. 149-173.</mixed-citation>
     <mixed-citation xml:lang="en">Doschek E.E., Laming G.A., Doschek G.A., Feldman V., Wilhelm K. A comparison of measurements of solar extreme-ultraviolet spectral line intensities emitted by C, N, O, and S ions with theoretical calculations. Astrophys. J. 1999. vol. 518, no. 2. pp. 909-917.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B10">
    <label>10.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Doschek E.E., Laming G.A., Doschek G.A., et al. A comparison of measurements of solar extreme-ultraviolet spectral line intensities emitted by C, N, O, and S ions with theoretical calculations // Astrophys. J. 1999. V. 518, N 2. P. 909-917.</mixed-citation>
     <mixed-citation xml:lang="en">Erdely R., Doyle J.G., Perez M.E., Wilhelm K. Center-to-limb width measurements of solar chromospheric, transition region and coronal lines. Astron. Astrophys. 1998, vol. 337, pp. 287-293.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B11">
    <label>11.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Erdely R., Doyle J.G., Perez M.E., Wilhelm K. Center-to-limb width measurements of solar chromospheric, transition region and coronal lines // Astron. Astrophys. 1998. V. 337. P. 287-293.</mixed-citation>
     <mixed-citation xml:lang="en">Feldman U. Elemental abundances in the upper solar atmosphere. Physica Scripta. 1992, vol. 46, pp. 202-220.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B12">
    <label>12.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Feldman U. Elemental abundances in the upper solar atmosphere // Physica Scripta. 1992. V. 46. P. 202-220.</mixed-citation>
     <mixed-citation xml:lang="en">Feldman U., Mandelbaum P., Seely J.L., Doschek G.A., Gursky H. The potential for plasma diagnostics from stellar extreme-ultraviolet observations. Astron. Astrophys. Suppl. Ser. 1992, vol. 81, pp. 387-408.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B13">
    <label>13.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Feldman U., Mandelbaum P., Seely J.L., et al. The potential for plasma diagnostics from stellar extreme-ultraviolet observations // Astrophys. J. Suppl. Ser. 1992. V. 81. P. 387-408.</mixed-citation>
     <mixed-citation xml:lang="en">Feldman U., Schühle U., Widing K.G., Laming J.M. Coronal composition above the solar equa-tor and the north pole as determined from spectra acquired by the SUMER instrument on SOHO. Astrophys. J. 1998, vol. 505, no. 2, pp. 99-1006.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B14">
    <label>14.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Feldman U., Schühle U., Widing K.G., Laming J.M. Coronal composition above the solar equator and the north pole as determined from spectra acquired by the SUMER instrument on SOHO // Astrophys. J. 1998. V. 505, N 2. P. 99-1006.</mixed-citation>
     <mixed-citation xml:lang="en">Feldman U., Doschek G.A., Schühle U., Wilhelm K. Properties of quiet - Sun coronal plasmas at distances of 1.03 ≤Ro≤1.50 along the solar equatorial plane. Astrophys. J. 1999, vol. 518, no. 1, pp. 500-507.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B15">
    <label>15.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Feldman U., Doschek G.A., Schühle U., Wihelm K. Properties of quiet - Sun coronal plasmas at distances of 1.03 ≤Ro≤1.50 along the solar equatorial plane // Astrophys. J. 1999. V. 518, N 1. P. 500-507.</mixed-citation>
     <mixed-citation xml:lang="en">Feldman U., Warren H.P., Brown C.M., Do-schek G.A. Can then composition of the solar corona be derived from HINODE/extreme-ultraviolet imaging spectrometer spectra. Astro-phys. J. 2009, vol. 695, no. 1, pp. 36-45. DOI: 10.1088/ 0004-637X/695/1/36.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B16">
    <label>16.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Feldman U., Warren H.P., Brown C.M., Doschek G.A. Can then composition of the solar corona be derived from HINODE/extreme-ultraviolet imaging spectrometer spectra // Astrophys. J. 2009. V. 695, N 1. P. 36-45. DOI: 10.1088/ 0004-637X/695/1/36.</mixed-citation>
     <mixed-citation xml:lang="en">Fludra A., Schmelz J.T. The absolute coronal abundance of silfur, calcium, and iron from YOHKOH-BCS flare spectra. Astr. Astrophys, 1999, vol. 348, pp. 286-294.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B17">
    <label>17.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Fludra A., Schmelz J.T. The absolute coronal abundance of silfur, calcium, and iron from YOHKOH-BCS flare spectra // Astron. Astrophys. 1999. V. 348. P. 286-294.</mixed-citation>
     <mixed-citation xml:lang="en">Fontenla I.M., Avrett E.H., Loeser R. Energy balance in the solar transition region. III. Helium emission in hydrostatic, constant- abundance models with diffusion. Astrophys. J. 1993, vol. 406, no. 1, pp. 319-345.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B18">
    <label>18.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Fontenla I.M., Avrett E.H., Loeser R. Energy balance in the solar transition region. III. Helium emission in hydrostatic, constant-abundance models with diffusion // Astrophys. J. 1993. V. 406, N 1. P. 319-345.</mixed-citation>
     <mixed-citation xml:lang="en">Getman K.V., Livshits M.A. A model for the outer solar atmosphere devoid of activity. Astronomichesky zhurnal [Astron. Report]. 1996, vol. 73, pp. 119-124. (In Russian).</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B19">
    <label>19.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Hassler D.M., Rottman G.J., Shoub E.C., Holzer T.E. Line broadening of Mg X λλ609 and 625 coronal emission lines observed above the solar limb // Astrophys. J. 1990. V. 348, N 1. P. L77-L80.</mixed-citation>
     <mixed-citation xml:lang="en">Hassler D.M., Rottman G.J., Shoub E.C., Holzer T.E. Line broadening of Mg X λλ609 and 625 coronal emission lines observed above the solar limb. Astrophys. J. 1990, vol. 348, no. 1, pp. L77-L80.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B20">
    <label>20.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Kjeldseth Moe O., Nicolas K.R. Emission measures, electron densities, and nonthermal velocities from optically thin UV lines near a quiet solar limb // Astrophys. J. 1977. V. 211. P. 579-586.</mixed-citation>
     <mixed-citation xml:lang="en">Kjeldseth Moe O., Nicolas K.R. Emission measures, electron densities, and nonthermal velocities from optically thin UV lines near a quiet solar limb. Astrophys. J. 1977, vol. 211, pp. 579-586.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B21">
    <label>21.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Krissinel B.B. Modeling of the structure of quiescent areas of the solar atmosphere emitting at 1-100 cm // Astron. Rep. 2015. V. 59, N 1. P. 58-71. DOI: 10.1134/S1063772915010060.</mixed-citation>
     <mixed-citation xml:lang="en">Krissinel B.B. Modeling of the structure of quiescent areas of the solar atmosphere emitting at 1-100 cm. Astron. Rep. 2015, vol. 59, no. 1, pp. 58-71. DOI: 10.1134/ S1063772915010060.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B22">
    <label>22.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Laming J.M., Feldman U., Schühle U., et al. Electron density diagnostic for solar upper atmosphere from spectra obtained by SUMER/SOHO // Astrophys. J. 1997. V. 485. P. 911-919.</mixed-citation>
     <mixed-citation xml:lang="en">Laming J.M., Feldman U., Schühle U., Lemaire P., Curdt W., Wilhelm K. Electron density diagnostic for solar upper atmosphere from spectra obtained by SUMER/SOHO. Astrophys. J. 1997, vol. 485, pp. 911-919.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B23">
    <label>23.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Landi E., Feldman U., Dere K.P. CHIANTI - an atomic database for emission lines. V. Comparison with an isothermal spectrum observed with SUMER // Astrophys. J. Suppl. Ser. 2002a. V. 139, N 1. P. 281-296</mixed-citation>
     <mixed-citation xml:lang="en">Landi E., Feldman U., Dere K.P. CHIANTI - an atomic database for emission lines. V. Comparison with an isothermal spectrum observed with SUMER. Astrophys. J. Suppl. Ser. 2002a, vol. 139, no. 1, pp. 281-296.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B24">
    <label>24.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Landi E., Feldman U., Dere K.P. A comparison between coronal emission lines from an isothermal spectrum obtained with the coronal diagnostic spectrometer and CHIANTI emissivities // Astrophys. J. 2002b. V. 574, N 2. P. 495-503.</mixed-citation>
     <mixed-citation xml:lang="en">Landi E., Feldman U., Dere K.P. A comparison between coronal emission lines from an isothermal spectrum obtained with the coronal diagnostic spectrometer and CHIANTI emissivi-ties. Astrophys. J. 2002b, vol. 574, no. 2, pp. 495-503.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B25">
    <label>25.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Landi E., Feldman U. Properties of solar plasmas near solar maximum above two quiet regions at distance of 1.02 - 1.34 Ro // Astrophys. J. 2003. V. 592, N 1. P. 607-619.</mixed-citation>
     <mixed-citation xml:lang="en">Landi E., Feldman U. Propeerties of solar plas-mas near solar maximum above two quiet regions at distance of 1.02 - 1.34 Ro. Astrophys. J. 2003, vol. 592, no. 1, pp. 607-619.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B26">
    <label>26.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Landi E., Del Zanna G., Young P.R., et al. CHIANTI - an atomic database for emission lines. XII, Version 7 for database // Astrophys. J. 2012. V. 744, N 1. P. 99-108. DOI: 10.1088/ 0004-637X/778/1/29.</mixed-citation>
     <mixed-citation xml:lang="en">Landi E., Del Zanna G., Young P.R., Dere K.P., Mason H.E. CHIANTI - an atomic database for emission lines. XII, Version 7 for database. As-trophys. J. 2012, vol. 744, no. 2, p. 99. DOI: 10.1088/0004-637X/778/1/29.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B27">
    <label>27.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Lantos P., Kundu M.R. The quiet Sun brightness distributions at millimeter wavelenghts and chrospheric inhomogeneties // Astron. Astro-phys. 1972. V. 21. P. 119-124.</mixed-citation>
     <mixed-citation xml:lang="en">Lantos P., Kundu M.R. The quiet Sun brightness distributions at millimeter wavelenghts and chrospheric inhomogeneties. Astron. Astrophys. 1972, vol. 21, pp. 119-124.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B28">
    <label>28.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Lee H., Yun H.S., Chae J. Nonthermal broadening of UV lines observed at the limb of the quiet SUN // J. Kor. Astron. Soc. 2000. V. 33. P. 57-37.</mixed-citation>
     <mixed-citation xml:lang="en">Lee H., Yun H.S., Chae J. Nonthermal broadening of UV lines observed at the limb of the quiet SUN. J. Kor. Astron. Soc. 2000, vol. 33, pp. 57-37.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B29">
    <label>29.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Mariska J.T., Feldman U., Doschek G.A. Meas-urements of extreme-ultraviolet emission-line profilies near the solar limb // Astrophys. J. 1978. V. 226. P. 698-705.</mixed-citation>
     <mixed-citation xml:lang="en">Mariska J.T., Feldman U., Doschek G.A. Meas-urements of extreme-ultraviolet emission-line profilies near the solar limb. Astrophys. J. 1978, vol. 226, pp. 698-705.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B30">
    <label>30.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Mariska J.T., Feldman U., Doschek G.A. Non-thermal broadening of extreme ultraviolet emission lines near Solar limb // Astron. Astrophys. 1979. V. 73. P. 361-363.</mixed-citation>
     <mixed-citation xml:lang="en">Mariska J.T., Feldman U., Doschek G.A. Non-thermal broadening of extreme ultraviolet emission lines near Solar limb. Astron. Astrophys. 1979, vol. 73, pp. 361-363.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B31">
    <label>31.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Mason H.E., Monsignori Fossi B.C. Spectro-scopic diagnostic in the VUW for solar and stellar plasmas // Astron. Astrophys. Rev. 1994. V. 6. P. 123-173.</mixed-citation>
     <mixed-citation xml:lang="en">Mason H.E., Monsignori Fossi B.C. Spectro-scopic diagnostic in the VUW for solar and stellar plasmas. Astron. Astrophys. Rev. 1994, vol. 6, pp. 123-173.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B32">
    <label>32.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Mohan A., Landi E., Dwivedeli B.N. On the ex-treme-ultraviolet/ultraviolet plasma diagnostics for nitrogen-like ions from spectra obtained by SOHO/SUMER // Astrophys. J. 2003. V. 582, N 1. P. 1162-1171.</mixed-citation>
     <mixed-citation xml:lang="en">Mohan A., Landi E., Dwivedeli B.N. On the ex-treme-ultraviolet/ultraviolet plasma diagnostics for nitrogen-like ions from spectra obtained by SOHO/SUMER. Astrophys. J. 2003, vol. 582, no. 1, pp. 1162-1171.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B33">
    <label>33.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Parenti S., Landi E., Bromage B.J.I. SOHO-ULYSSES spring 2000 quadrature: coronal diag-nostic spectrometer and SUMER results // Astro-phys. J. 2003. V. 590, N 1. P. 519-532.</mixed-citation>
     <mixed-citation xml:lang="en">Parenti S., Landi E., Bromage B.J.I. SOHO-ULYSSES spring 2000 quadrature: coronal diagnostic spectrometer and SUMER results. Astrophys. J. 2003, vol. 590, no. 1, pp. 519-532.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B34">
    <label>34.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Peter H. Analysis of transition-region emission-line profiles from full-disk scans of the Sun using the SUMER instrument on SOHO // Astrophys. J. 1999. V. 516, N 1. P. 490-504.</mixed-citation>
     <mixed-citation xml:lang="en">Peter H. Analysis of transition-region emission-line profiles from full-disk scans of the Sun using the SUMER instrument on SOHO. Astrophys. J. 1999, vol. 516, no. 1, pp. 490-504.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B35">
    <label>35.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Schmelz J.T., Reames D.V., von Steiger R., Basu S. Composition of the solar corona, solar wind, and solar energetic particles // Astrophys. J. 2012. V. 755, N 1. P. 33-40. DOI: 10.1088/0004-637X/755/1/33.</mixed-citation>
     <mixed-citation xml:lang="en">Schmelz J.T., Reames D.V., von Steiger R., Basu S. Composition of the solar corona, solar wind, and solar energetic particles. Astrophys. J. 2012, vol. 755, no. 1, p. 33-40. DOI: 10.1088/0004-637X/755/1/33.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B36">
    <label>36.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Warren H.P. Measuring the physical properties of the solar corona: results from SUMER/SOHO and TRACE // Sol. Phys. 1999. V. 190. P. 363-377.</mixed-citation>
     <mixed-citation xml:lang="en">Warren H.P. Measuring the physical properties of the solar corona: results from SUMER/SOHO and TRACE. Sol. Phys. 1999, vol. 190, pp. 363-377.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B37">
    <label>37.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Warren H.P., Warshall A.D. Temperature and density measurements in a quiet coronal streamer // Astrophys. J. 2002. V. 571, N 1. P. 999-1007.</mixed-citation>
     <mixed-citation xml:lang="en">Warren H.P., Warshall A.D. Temperature and density measurements in a quiet coronal streamer. Astrophys. J. 2002, vol. 571, no. 1, pp. 999-1007.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B38">
    <label>38.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Warren H.P. A solar minimum irradiance spectrum for wavelengths below 1200 Å // Astro-phys. J. Suppl. Ser. 2005. V. 157, N 1. P. 147-173.</mixed-citation>
     <mixed-citation xml:lang="en">Warren H.P. A solar minimum irradiance spectrum for wavelengths below 1200Ǻ. Astrophys. J. Suppl. Ser. 2005, vol. 157, no. 1, pp. 147-173.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B39">
    <label>39.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Warren H.P., Brooks D.H. The temperature and density structure of the solar corona. I. Observations of the quiet Sun with the EUV imaging spectrometer on Hinode // Astrophys. J. 2009. V. 700, N 2. P. 762-773. DOI: 10.1088/0004-637X/700/1/762.</mixed-citation>
     <mixed-citation xml:lang="en">Warren H.P., Brooks D.H. The temperature and density structure of the solar corona. I. Observations of the quiet Sun with the EUV imaging spectrometer on Hinode. Astrophys. J. 2009, vol. 700, no. 2, p. 762-773. DOI: 10.1088/0004-637X/700/1/762.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B40">
    <label>40.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Wilhelm K., Lemaire P., Dammasch I.E., et al. Solar irradiances and radiances of UV and EUV lines during the minimum sunspot activity in 1996 // Astron. Astrophys. 1998. V. 334. P. 685-702.</mixed-citation>
     <mixed-citation xml:lang="en">Wilhelm K., Lemaire P., Dammasch I.E., et al. Solar irradiances and radiances of UV and EUV lines during the minimum sunspot activity in 1996. Astron. Astrophys. 1998, vol. 334, p. 685-702.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B41">
    <label>41.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Young P.R., Landi E., Thomas R.J. CHIANTI: an atomic database for emission lines. II. Comparison with the SERTS-89 active region spectrum // Astron. Astrophys. 1998. V. 329. P. 291-314.</mixed-citation>
     <mixed-citation xml:lang="en">Young P.R., Landi E., Thomas R.J. CHIANTI: an atomic database for emission lines. II. Comparison with the SERTS-89 active region spectrum. Astron. Astrophys. 1998, vol. 329, p. 291-314.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B42">
    <label>42.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Young P.R., Del Zanna G., Mason H.E., et al. EUV emission lines and diagnostics observed with Hinode/EIS // Publ. Astron. Soc. Japan. 2007. V. 59. P. S857-S864.</mixed-citation>
     <mixed-citation xml:lang="en">Young P.R., Del Zanna G., Mason H.E., Dere K.P., Landi E., Landini M., Doschek G.A., Brown Ch.M., Culhane L., Harra L.K., Watanabe T., Hara H. EUV emission lines and diagnostics observed with Hinode/EIS. Publ. Astron. Soc. Japan. 2007, vol. 59, p. S857-S864.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B43">
    <label>43.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Zirin H., Baument B.M., Hurford G.J. The microwave brightness temperature spectrum of the quiet Sun // Astrophys. J. 1991. V. 370, N 1. P. 779-783.</mixed-citation>
     <mixed-citation xml:lang="en">Zirin H., Baument B.M., Hurford G.J. The microwave brightness temperature spectrum of the quiet Sun. Astrophys. J. 1991, vol. 370, no. 1, p. 779-783.</mixed-citation>
    </citation-alternatives>
   </ref>
  </ref-list>
 </back>
</article>
