Response of Granulation to Small Scale Bright Features in the Quiet Sun
arXiv:1102.3404 · doi:10.1088/0004-637X/731/1/29
Abstract
We detected 2.8 bright points (BPs) per Mm 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.
18 pages 8 figures. The version here has slightly different position and size of figures than the original article accepted in ApJ
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