Estimation of the flux tube diameters outside sunspots using Hinode observations. Preliminary results
Indirect estimations of diameters of the smallest flux tubes outside sunspots are made using SOT/Hinode observations of Fei 6301.5 and 6302.5 lines. These estimations are based on the comparison of measured effective magnetic field strength Bₑff in named lines. It is shown that Bₑff (6301.5)/Bₑff (6...
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| Published in: | Advances in Astronomy and Space Physics |
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| Date: | 2016 |
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| Format: | Article |
| Language: | English |
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Головна астрономічна обсерваторія НАН України
2016
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| Online Access: | https://nasplib.isofts.kiev.ua/handle/123456789/119945 |
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| Cite this: | Estimation of the flux tube diameters outside sunspots using Hinode observations. Preliminary results / O.O. Botygina, M.Yu. Gordovskyy, V.G. Lozitsky // Advances in Astronomy and Space Physics. — 2016. — Т. 6., вип. 1. — С. 20-23. — Бібліогр.: 17 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1862663738920796160 |
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| author | Botygina, O.O. Gordovskyy, M.Yu. Lozitsky, V.G. |
| author_facet | Botygina, O.O. Gordovskyy, M.Yu. Lozitsky, V.G. |
| citation_txt | Estimation of the flux tube diameters outside sunspots using Hinode observations. Preliminary results / O.O. Botygina, M.Yu. Gordovskyy, V.G. Lozitsky // Advances in Astronomy and Space Physics. — 2016. — Т. 6., вип. 1. — С. 20-23. — Бібліогр.: 17 назв. — англ. |
| collection | DSpace DC |
| container_title | Advances in Astronomy and Space Physics |
| description | Indirect estimations of diameters of the smallest flux tubes outside sunspots are made using SOT/Hinode observations of Fei 6301.5 and 6302.5 lines. These estimations are based on the comparison of measured effective magnetic field strength Bₑff in named lines. It is shown that Bₑff (6301.5)/Bₑff (6302.5) ≈ 1.3 in the range Bₑff = 40-300 G, and Bₑff (6301.5)/Bₑff (6302.5) ≈ 1.0 for Bₑff ≤ 10-20 G. The first case corresponds to the two-component magnetic field with kG flux tubes and weak background field, whereas the second one corresponds to background field without flux tubes. Assuming that the field range Bₑff = 10-40 G corresponds to the case with only one flux tube in each pixel, the flux tube diameters should be 15-30 km. Possible influence of the brightness contrast and the Zeeman saturation could change this estimation by approximately 20%.
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| first_indexed | 2025-12-07T15:11:44Z |
| format | Article |
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| id | nasplib_isofts_kiev_ua-123456789-119945 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 2227-1481 |
| language | English |
| last_indexed | 2025-12-07T15:11:44Z |
| publishDate | 2016 |
| publisher | Головна астрономічна обсерваторія НАН України |
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| spelling | Botygina, O.O. Gordovskyy, M.Yu. Lozitsky, V.G. 2017-06-10T13:13:07Z 2017-06-10T13:13:07Z 2016 Estimation of the flux tube diameters outside sunspots using Hinode observations. Preliminary results / O.O. Botygina, M.Yu. Gordovskyy, V.G. Lozitsky // Advances in Astronomy and Space Physics. — 2016. — Т. 6., вип. 1. — С. 20-23. — Бібліогр.: 17 назв. — англ. 2227-1481 DOI:10.17721/2227-1481.6.20-23 https://nasplib.isofts.kiev.ua/handle/123456789/119945 Indirect estimations of diameters of the smallest flux tubes outside sunspots are made using SOT/Hinode observations of Fei 6301.5 and 6302.5 lines. These estimations are based on the comparison of measured effective magnetic field strength Bₑff in named lines. It is shown that Bₑff (6301.5)/Bₑff (6302.5) ≈ 1.3 in the range Bₑff = 40-300 G, and Bₑff (6301.5)/Bₑff (6302.5) ≈ 1.0 for Bₑff ≤ 10-20 G. The first case corresponds to the two-component magnetic field with kG flux tubes and weak background field, whereas the second one corresponds to background field without flux tubes. Assuming that the field range Bₑff = 10-40 G corresponds to the case with only one flux tube in each pixel, the flux tube diameters should be 15-30 km. Possible influence of the brightness contrast and the Zeeman saturation could change this estimation by approximately 20%. The authors are extremely thankful to Dr. Myroslav Stodilka for helpful discussions and anonymous referee for useful critical notes and comments. Hinode telescope is Japanese project which was constructed and launched by ISAS/JAXA, in cooperation with NAOJ (Japan), NASA (USA) and STFC (UK) Telescope is operated by named organizations
 as well as ESA and NTS (Norway). This study was funded by the Taras Shevchenko National University of Kyiv, No.16BF023-01, No.16BF023-02 projects. en Головна астрономічна обсерваторія НАН України Advances in Astronomy and Space Physics Estimation of the flux tube diameters outside sunspots using Hinode observations. Preliminary results Article published earlier |
| spellingShingle | Estimation of the flux tube diameters outside sunspots using Hinode observations. Preliminary results Botygina, O.O. Gordovskyy, M.Yu. Lozitsky, V.G. |
| title | Estimation of the flux tube diameters outside sunspots using Hinode observations. Preliminary results |
| title_full | Estimation of the flux tube diameters outside sunspots using Hinode observations. Preliminary results |
| title_fullStr | Estimation of the flux tube diameters outside sunspots using Hinode observations. Preliminary results |
| title_full_unstemmed | Estimation of the flux tube diameters outside sunspots using Hinode observations. Preliminary results |
| title_short | Estimation of the flux tube diameters outside sunspots using Hinode observations. Preliminary results |
| title_sort | estimation of the flux tube diameters outside sunspots using hinode observations. preliminary results |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/119945 |
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