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Journal of Physical Studies 16(3), Article 3902 [7 pages] (2012)
DOI: https://doi.org/10.30970/jps.16.3902 MESOGRANULATION IN SOLAR ATMOSPHEREO. A. Baran
Astronomical Observatory of the Ivan Franko National University of Lviv, |
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We studied the structure of the convective cells of mesogranule scales in the solar atmosphere using neutral iron line $λ ≈ 639.3$ nm profiles obtained with high spatial and temporal resolution. The acoustic waves were removed by $k-ω$ filtration, the convective cells of mesogranule scales were selected. The distributions of temperature and vertical velocity in the investigated region are analyzed: the inversion of temperature fluctuations is detected in the upper layers of the photosphere and the inversion of vertical velocity is also possible. We investigated the distributions of temperature and vertical velocity within mesogranule cells; we have detected horizontal shifts of the corresponding structures. The correlation of temperature fluctuations and vertical velocity is the highest in the lower photosphere, then decreases to zero at $h≈240$ km, changes sign and increases in the upper layers again.
PACS number(s): 97.10.Ex