Observations of umbral dots and their physical models

Watanabe Hiroko

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Observations of umbral dots and their physical models

机译：本影点及其物理模型的观察

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TheHinodesatelliteopensanewerainsunspotresearch,becauseofitshighspatialresolutionandtemporalstability.Fine-scalestructuresinsunspots,calledumbraldots(UDs),havebecomeoneofthehottesttopicsintermsofcloseobservationsofmagnetoconvection.Inthispaper,abriefreviewoftheobservedpropertiesofUDsisgivenbasedonrecentliterature.UDsbornintheperipheryoftheumbraexhibitinwardmigration,andtheirspeedsarepositivelycorrelatedwiththemagneticfieldinclination.Longer-lastingUDstendtobelargerandbrighter,whilethelifetimesofUDsshownorelationtotheirbackgroundmagneticfieldstrength.UDstendtodisappear,orstoptheirpropermotionbycollidingwithalocallystrongfieldregion.ThespatialdistributionofUDsisnotuniformoveranumbra,butisratherlocatedattheboundariesofcellularpatterns.Fromourtwo-dimensionalcorrelationanalysis,wemeasuredthecharacteristicwidthofthecellboundaries(a‰?a€‰0$${^{primeprime}_{.}}$$5)andthesizeofthecells(a‰?a€‰6a€3).WethenperformedasimplifiedanalysistoobtainstatisticsofhowtheUDdistributionisrandomorclusteredusingHinodebluecontinuumimages.WehavefoundahintthattheUDsbecomelessdenseandmoreclusteredforlater-phasesunspots.Theseresultsmayberelatedtotheevolutionalchangeofthesubsurfacestructureofasunspot.Basedontheseobservationalresults,wediscusstheirphysicalmodelsbymeansofnumericalsimulationsofmagnetoconvection.

机译：TheHinodesatelliteopensanewerainsunspotresearch，becauseofitshighspatialresolutionandtemporalstability.Fine-scalestructuresinsunspots，calledumbraldots（UDS），havebecomeoneofthehottesttopicsintermsofcloseobservationsofmagnetoconvection.Inthispaper，abriefreviewoftheobservedpropertiesofUDsisgivenbasedonrecentliterature.UDsbornintheperipheryoftheumbraexhibitinwardmigration，andtheirspeedsarepositivelycorrelatedwiththemagneticfieldinclination.Longer-lastingUDstendtobelargerandbrighter，whilethelifetimesofUDsshownorelationtotheirbackgroundmagneticfieldstrength.UDstendtodisappear，orstoptheirpropermotionbycollidingwithalocallystrongfieldregion.ThespatialdistributionofUDsisnotuniformoveranumbra，butisratherlocatedattheboundariesofcellularpatterns.Fromourtwo-dimensionalcorrelationanalysis，wemeasuredthecharacteristicwidthofthecellboundaries（一个‰？一个€‰0 $$ {^ {primeprime} _ {。}} $$ 5）和像元大小（a？a？‰6a€3）。然后我们进行了简化的分析，以获取使用H分布UD分布的统计数据。我们发现，后来的UD变得无影无踪，聚簇了很多。这些结果可能与太阳的表面结构的演化变化有关。基于这些观测结果，我们用数学模拟的方式讨论了它的物理模型。

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《PASJ: Publications of the Astronomical Society of Japan》 |2014年第sp1期|共页
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Watanabe Hiroko;
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1. Physical Properties of Umbral Dots Observed in Sunspots: A Hinode Observation [J] . Rahul Yadav, Shibu K. Mathew Solar physics . 2018,第4期

机译：在太阳黑子中观察到的翁布点的物理性质：Hinode观察
2. The study of umbral dots in sunspots based on SOT/Hinode observations [J] . H.Ebadi, V.Abbasvand, H.Pourjavadi Astronomische Nachrichten: A Journal on all Fields of Astronomy . 2017,第6期

机译：基于SOT / Hinode观测的太阳黑子中的翁布点研究
3. Improved SOT (Hinode mission) high resolution solar imaging observations: 2-Photometric properties of sunspot umbral dots [J] . Goodarzi H., Koutchmy S., Adjabshirizadeh A. Astrophysics and space science . 2016,第11期

机译：改进的SOT（高空任务）高分辨率太阳影像观测：黑子本影点的2-光度特性
4. Are the umbral dots, penumbral grains, and G band bright points formed by the same type of magnetic flux tubes? [C] . Isroil Sattarov Symposium of the International Astronomical Union . 2011

机译：是由相同类型的磁通管形成的翁布线点，粒子晶粒和G带亮点？
5. A near-infrared filter system and study of solar umbral dots at 1.56 mum. [D] . Wang, Jingshan. 2001

机译：一种近红外滤光片系统，研究1.56 mum处的太阳本影点。
6. Fundal white dots: observations from a murine model of congenital ocular toxoplasmosis. [O] . J Hay, G N Dutton 1996

机译：眼底白点：来自先天性眼弓形虫病小鼠模型的观察结果。
7. Observations of Umbral Dots and their Physical Models [O] . Watanabe, Hiroko 2014

机译：Umbral Dots及其物理模型的观察

Observations of umbral dots and their physical models

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