Analysis of large-scale photospheric dynamics during the solar cycle 24


Authors

  • Valeria Quintero Ortega Universidad Nacional de Colombia
  • Jose Iván Campos Rozo Universidad Nacional de Colombia
  • Santiago Vargas Domínguez Universidad Nacional de Colombia

DOI:

https://doi.org/10.22517/23447214.17541

Keywords:

Solar physics, Granulation, Photosphere, Dynamics, Meridional Flows, Local Correlation Tracking

Abstract

The analysis of the movements of the solar photosphere has been used by several authors to study the dynamics of solar plasma at various spatial and temporal scales. This work, in particular, is focused on the study of vertical movements, in order to perform a statistical analysis of the flow maps to characterize some dynamic aspects of the photospheric plasma along the time evolution of the Sun. To carry out this analysis, we used a set of images obtained by the HMI instrument HMI (Helioseismic and Magnetic Imager) aboard the SDO mission (Solar Dynamics Observatory) to which local correlation tracking algorithms (LCT) were applied. they allow the identification of areas of convergence and divergence of the plasma at certain time intervals during the solar cycle 24, thus covering moments of high and low solar activity. The study gives us the reason for the meridional movements showing that in low latitudes the outgoing emergency flow occupied a higher percentage of area, while in the latitudes near the poles the behavior changes, that is, the incoming flows occupy a greater area.

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References

[1]. Campos Rozo, J. I. (2017). “Evolution and dynamic properties of photospheric plasma in solar active regions” MSc thesis, MSc Thesis, 2017.

[2]. Hathaway, D. H. et al. Jan 2002. “Radial Flows in Supergranules”. 205:25-38.

[3]. National Aerinautics and Space Administration. “The Solar Dynamo”. Marshall Space Flight Center. Solar Physics. [Online]. Avaliable: “http://solarscience.msfc.nasa.gov/dynamo.shtml”.

[4]. November, L. J. and Simon, G. W. (1988) "Precise propermotion measurement of solar granulation," ApJ, 333:427-442.

[5]. Rieutord, M. and Rincon, F. (2010). “The sun's supergranulation”. Living Reviews in Solar Physics, 7 (2).

[6]. Sarbani Basu and H. M. Antia. (2011).“Characteristics of Solar Meridional Flows”. J.Phys. : Conf. Ser.271 012071.

[7]. Stanford Solar Observatories Group. “Joint Science Operations Center (JSOC)”. Stanford University. [Online]. Available: “http://jsoc.stanfor.edu/”.

[8]. Stix, Michael, “The sun: An introduction”. Second Edition. Springer-Verlag. 2004.

[9]. SunPy Community et al. (2015). SunPy-Python for solar physics. Computational Science andDiscovery, 8(1):014009.

[10]. Thomson, W. T. “Coordinate Systems for Solar Image Data”. A&A 449,791-803 (2006)

[11]. Vargas Dominguez, S. (2009). "Study of horizontal flows in solar active regions based on high-resolution image reconstruction techniques". PhD thesis, PhD Thesis, 2009.

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Published

2018-06-30

How to Cite

Quintero Ortega, V., Campos Rozo, J. I., & Vargas Domínguez, S. (2018). Analysis of large-scale photospheric dynamics during the solar cycle 24. Scientia Et Technica, 23(2), 288–292. https://doi.org/10.22517/23447214.17541

Issue

Vol. 23 No. 2 (2018)

Section

Ciencias Básicas

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