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arXiv · 1102.3404

Response of Granulation to Small Scale Bright Features in the Quiet Sun

Aleksandra Andic·J. Chae·K. Ahn·P. R. Goode·W. Cao·V. Yurchyshyn·V. Abramenko
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Abstract

We detected 2.8 bright points (BPs) per Mm$^2$ in the Quiet Sun (QS) with the New Solar Telescope (NST) at Big Bear Solar Observatory; using the TiO 705.68 nm spectral line, at an angular resolution ~ 0.1'' to obtain 30 min data sequence. Some BPs formed knots that were stable in time and influenced the properties of the granulation pattern around them. The observed granulation pattern within ~ 3'' of knots presents smaller granules than those observed in a normal granulation pattern; i.e., around the knots a suppressed convection is detected. Observed BPs covered ~ 5% of the solar surface and were not homogeneously distributed. BPs had an average size of 0.22'', they were detectable for 4.28 min in average, and had an averaged contrast of 0.1% in the deep red TiO spectral line.

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Aleksandra Andic, J. Chae, K. Ahn, P. R. Goode, W. Cao, V. Yurchyshyn, V. Abramenko. 2011-02-16. Response of Granulation to Small Scale Bright Features in the Quiet Sun. https://doi.org/10.1088/0004-637x%2F731%2F1%2F29

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