Response of granulation to small-scale bright features in the quiet Sun

A. Andić; J. Chae; P. R. Goode; Wenda Cao; Kwangsu Ahn; Vasyl Yurchyshyn; V. Abramenko

doi:10.1088/0004-637X/731/1/29

Response of granulation to small-scale bright features in the quiet Sun

A. Andić, J. Chae, P. R. Goode, Wenda Cao, Kwangsu Ahn, Vasyl Yurchyshyn, V. Abramenko

Center For Solar Terrestrial Research - Big Bear Solar Observatory

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

Abstract

We detected 2.8 bright points (BPs) per Mm² in the quiet Sun with the New Solar Telescope at Big Bear Solar Observatory, using the TiO 705.68 nm spectral line at an angular resolution 01 to obtain a 30 minute 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 022, they were detectable for 4.28 minutes on average, and had an averaged contrast of 0.1% in the deep red TiO spectral line.

Original language	English (US)
Article number	29
Journal	Astrophysical Journal
Volume	731
Issue number	1
DOIs	https://doi.org/10.1088/0004-637X/731/1/29
State	Published - Apr 10 2011

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

Keywords

Sun: granulation
Sun: photosphere
Sun: surface magnetism

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10.1088/0004-637X/731/1/29

Cite this

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title = "Response of granulation to small-scale bright features in the quiet Sun",

abstract = "We detected 2.8 bright points (BPs) per Mm2 in the quiet Sun with the New Solar Telescope at Big Bear Solar Observatory, using the TiO 705.68 nm spectral line at an angular resolution 01 to obtain a 30 minute 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 022, they were detectable for 4.28 minutes on average, and had an averaged contrast of 0.1% in the deep red TiO spectral line.",

keywords = "Sun: granulation, Sun: photosphere, Sun: surface magnetism",

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T1 - Response of granulation to small-scale bright features in the quiet Sun

AU - Andić, A.

AU - Chae, J.

AU - Goode, P. R.

AU - Cao, Wenda

AU - Ahn, Kwangsu

AU - Yurchyshyn, Vasyl

AU - Abramenko, V.

PY - 2011/4/10

Y1 - 2011/4/10

N2 - We detected 2.8 bright points (BPs) per Mm2 in the quiet Sun with the New Solar Telescope at Big Bear Solar Observatory, using the TiO 705.68 nm spectral line at an angular resolution 01 to obtain a 30 minute 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 022, they were detectable for 4.28 minutes on average, and had an averaged contrast of 0.1% in the deep red TiO spectral line.

AB - We detected 2.8 bright points (BPs) per Mm2 in the quiet Sun with the New Solar Telescope at Big Bear Solar Observatory, using the TiO 705.68 nm spectral line at an angular resolution 01 to obtain a 30 minute 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 022, they were detectable for 4.28 minutes on average, and had an averaged contrast of 0.1% in the deep red TiO spectral line.

KW - Sun: granulation

KW - Sun: photosphere

KW - Sun: surface magnetism

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DO - 10.1088/0004-637X/731/1/29

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SN - 0004-637X

VL - 731

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 1

M1 - 29

ER -

Response of granulation to small-scale bright features in the quiet Sun

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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