A model of the prolate chromosphere formation at the solar minimum

Filippov, B.P. and Koutchmy, S. and Den, O.G. (2002) A model of the prolate chromosphere formation at the solar minimum. Il nuovo cimento C, 25 (5\6). pp. 667-672. ISSN 1826-9885

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Detailed observations in different chromospheric lines of a solar diameter in polar and equatorial directions showed that the polar chromosphere at the minimum phase of solar cycle looks more extended than the low-latitude chromosphere. We propose a simple geometric model to explainthe effect of the prolateness of the solar chromosphere. A specific dynamical part of the solar atmosphere above the 2 Mm level is assumed to be a mixture of moving up and down jets of chromospheric matter with the coronal plasma between them. Due to the dynamic nature of this layer, the magnetic field is considered to play a very important role in the density distribution with the height, guiding the mass flows along the field lines. The difference of the magnetic-field topology in the polar and the equatorial regions leads to different heights of the chromospheric limb.

Item Type: Article
Additional Information: Paper presented at the International Meeting on THEMIS and the New Frontiers of Solar Atmosphere Dynamics, Rome, Italy, March 19-21, 2001.
Uncontrolled Keywords: Magnetohydrodynamics and plasmas ; Solar physics ; Conference proceedings
Subjects: 500 Scienze naturali e Matematica > 550 Scienze della Terra > 551 Geologia, Idrologia, Meteorologia > 551.5 Meteorologia (Classificare qui l'atmosfera) (Classificare la previsione e le previsioni di specifici fenomeni meteorologici in 551.64; classificare la Micrometeorologia in 551.66) > 551.51 Composizione, zone, dinamica dell'atmosfera > 551.514 Alta atmosfera (Include la magnetosfera, la mesosfera) (Classificare i fenomeni magnetici nella magnetosfera, le opere d'insieme sulla magnetosfera in 538.766) > 551.5145 Ionosfera
Depositing User: Marina Spanti
Date Deposited: 12 Mar 2020 16:57
Last Modified: 12 Mar 2020 16:57
URI: http://eprints.bice.rm.cnr.it/id/eprint/14877

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