The circumsolar dust complex and solar magnetic field

• Krivov Alexander

  Max-Planck-Institut Space Research Center St. Petersburg University

• Mann Ingrid

  Max-Planck-Institut

• Kimura Hiroshi

  Max-Planck-Institut

書誌事項

タイトル別名

• Circumsolar dust complex and solar

抄録

New model calculations for the dynamical evolution of dust particles at several solar radii around the Sun are presented. We choose a fractal aggregate consisting of either silicate or carbon as a representative of dielectric and absorbing fluffy particles. We take into account a large array of forces and effects acting on the dust particles-solar gravity, direct solar radiation pressure, Poynting-Robertson effect, sublimation, and the Lorentz force, with a special emphasis given to the latter. The Lorentz force was computed on the base of modeled grain's charges and a model of the actual solar magnetic field from 1976 to 1996. We have investigated the dynamics of individual grains, obtained radial and vertical density profiles of different-sized particles, and used the computed dust density distributions to calculate the expected F-corona brightness during the periods of weak and strong magnetic field. We have found that the solar magnetic field and its variations do not affect the dynamics and spatial distribution of carbon aggregates, which are thought to produce the peak features of the near-infrared F-corona brightness that were sometimes observed. On the other hand, the variations of the solar magnetic field may alter the latitudinal distribution of silicate aggregates. However, the effect is not strong enough to account for the observed temporal variations in the brightness. Thus we can rule out the correlation between the appearance or disappearance of a peak feature and the solar activity cycle.

収録刊行物

• Ｅａｒｔｈ，　Ｐｌａｎｅｔｓ　ａｎｄ　Ｓｐａｃｅ

  Ｅａｒｔｈ，　Ｐｌａｎｅｔｓ　ａｎｄ　Ｓｐａｃｅ 50 (6-7), 551-554, 1998

  地球電磁気・地球惑星圏学会 、公益社団法人 日本地震学会、特定非営利活動法人 日本火山学会、日本測地学会、日本惑星科学会

キーワード

• Space and Planetary Science
• Geology

詳細情報

• CRID: 1390001206508911232
• NII論文ID: 10002207135
• NII論文ID: 130003780731
• NII書誌ID: AA11211921
• DOI: 10.1186/bf03352148
• COI: 1:CAS:528:DyaK1cXntlSis7o%3D
• ISSN: 18805981
• ISSN: 13438832
• NDL書誌ID: 4552209
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4552209
• Web Site: https://link.springer.com/content/pdf/10.1186/BF03352148.pdf
• Web Site: https://link.springer.com/article/10.1186/BF03352148/fulltext.html
• Web Site: http://link.springer.com/content/pdf/10.1186/BF03352148
• 本文言語コード: en
• データソース種別:
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