Interannual variation of sunspot magnetic fields from 1924 to 2004
Some results of analysis of sunspot magnetic fields, including data from published papers (1000 measurements performed at the Mount Wilson National Observatory during 1924–1956) and data from various databases (20 000 measurements carried out during 1957–2004 at ten astronomical observatories, among...
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| Дата: | 2005 |
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| Автор: | |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
Головна астрономічна обсерваторія НАН України
2005
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| Назва видання: | Кинематика и физика небесных тел |
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| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/79630 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Interannual variation of sunspot magnetic fields from 1924 to 2004 / N.I. Lozitska // Кинематика и физика небесных тел. — 2005. — Т. 21, № 5-додаток. — С. 151-152. — Бібліогр.: 5 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| id |
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irk-123456789-796302015-04-04T03:02:01Z Interannual variation of sunspot magnetic fields from 1924 to 2004 Lozitska, N.I. MS2: Physics of Solar Atmosphere Some results of analysis of sunspot magnetic fields, including data from published papers (1000 measurements performed at the Mount Wilson National Observatory during 1924–1956) and data from various databases (20 000 measurements carried out during 1957–2004 at ten astronomical observatories, among them 400 measurements at the Kyiv University Astronomical Observatory) are presented. All the data were obtained using visual observations of the Zeeman splitting in the Fe I λλ 525.02 and 630.25 nm lines. The sunspots only with a diameter of penumbra from 30 to 60 arcsec and distance from disc centre less than 0.65R were studied. Magnetic field strengths Bsp averaged for each year were calculated on the basis of all individual daily measurements to exclude the influence of seasonal astroclimatic changes on quality of the Sun’s image and to reduce individual errors. The essential interannual variations of Bsp parameter in the range from 22 to 27 cT were found. These variations are about ten times more than standard errors of Bsp and have mainly an irregular character. The highest values of sunspot magnetic fields were in about 1943 and 2004 (Bsp ≈ 27 cT). 2005 Article Interannual variation of sunspot magnetic fields from 1924 to 2004 / N.I. Lozitska // Кинематика и физика небесных тел. — 2005. — Т. 21, № 5-додаток. — С. 151-152. — Бібліогр.: 5 назв. — англ. 0233-7665 http://dspace.nbuv.gov.ua/handle/123456789/79630 en Кинематика и физика небесных тел Головна астрономічна обсерваторія НАН України |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| language |
English |
| topic |
MS2: Physics of Solar Atmosphere MS2: Physics of Solar Atmosphere |
| spellingShingle |
MS2: Physics of Solar Atmosphere MS2: Physics of Solar Atmosphere Lozitska, N.I. Interannual variation of sunspot magnetic fields from 1924 to 2004 Кинематика и физика небесных тел |
| description |
Some results of analysis of sunspot magnetic fields, including data from published papers (1000 measurements performed at the Mount Wilson National Observatory during 1924–1956) and data from various databases (20 000 measurements carried out during 1957–2004 at ten astronomical observatories, among them 400 measurements at the Kyiv University Astronomical Observatory) are presented. All the data were obtained using visual observations of the Zeeman splitting in the Fe I λλ 525.02 and 630.25 nm lines. The sunspots only with a diameter of penumbra from 30 to 60 arcsec and distance from disc centre less than 0.65R were studied. Magnetic field strengths Bsp averaged for each year were calculated on the basis of all individual daily measurements to exclude the influence of seasonal astroclimatic changes on quality of the Sun’s image and to reduce individual errors. The essential interannual variations of Bsp parameter in the range from 22 to 27 cT were found. These variations are about ten times more than standard errors of Bsp and have mainly an irregular character. The highest values of sunspot magnetic fields were in about 1943 and 2004 (Bsp ≈ 27 cT). |
| format |
Article |
| author |
Lozitska, N.I. |
| author_facet |
Lozitska, N.I. |
| author_sort |
Lozitska, N.I. |
| title |
Interannual variation of sunspot magnetic fields from 1924 to 2004 |
| title_short |
Interannual variation of sunspot magnetic fields from 1924 to 2004 |
| title_full |
Interannual variation of sunspot magnetic fields from 1924 to 2004 |
| title_fullStr |
Interannual variation of sunspot magnetic fields from 1924 to 2004 |
| title_full_unstemmed |
Interannual variation of sunspot magnetic fields from 1924 to 2004 |
| title_sort |
interannual variation of sunspot magnetic fields from 1924 to 2004 |
| publisher |
Головна астрономічна обсерваторія НАН України |
| publishDate |
2005 |
| topic_facet |
MS2: Physics of Solar Atmosphere |
| url |
http://dspace.nbuv.gov.ua/handle/123456789/79630 |
| citation_txt |
Interannual variation of sunspot magnetic fields from 1924 to 2004 / N.I. Lozitska // Кинематика и физика небесных тел. — 2005. — Т. 21, № 5-додаток. — С. 151-152. — Бібліогр.: 5 назв. — англ. |
| series |
Кинематика и физика небесных тел |
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AT lozitskani interannualvariationofsunspotmagneticfieldsfrom1924to2004 |
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