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A New Model Will Help Predict Several Solar Phenomena

 An international group of scientists, in cooperation with a research scientist from Skoltech, has developed a model to describe changes in solar plasma. This will help comprehend solar dynamics and gives clues to understanding how to predict space weather events. The results have been published in The Astrophysical Journal.

Plasma β is an important quantity to investigate the interchanging roles of plasma and magnetic pressure in the solar atmosphere. It relates to both the solar magnetic field and driving solar phenomena such as solar wind, coronal mass ejections, and flares; these phenomena affect space weather directly.

Dr. Jenny Rodriguez, a scientist from the Space Center of Skolkovo Institute of Science and Technology (Russia), her colleagues from Leibniz Institut für Sonnenphysik (Germany) and Instituto Nacional de Pesquisas Espaciais (Brazil) have developed a model to estimate how plasma β changes in the solar atmosphere. Specifically, they obtain a description of the plasma β in the solar corona during previous solar cycles (~22 years). They found the strongest influence during both solar cycles from faculae and the quiet Sun regions.


Image: Plasma β in Apr. 17 (2014). Image in the solar corona at 171 A, Source: Solar Dynamic Observatory (SDO).


The faculae and QS regions drive variations in magnetic and kinetic pressure at coronal heights. It can directly affect space weather and the ability to predict it. These results give an interesting outlook on solar cycle dynamics.

“Plasma β is a very important quantity in the solar atmosphere. The solar atmosphere is a plasma physics laboratory near us; it allows us to know about its dynamics and to understand how many events are happening on the Sun. We believe that our findings will help comprehend the Sun’s dynamics and help forecast space weather,” said Dr. Jenny Rodriguez.

Link to the paper: M. Rodríguez Gómez, Palacios, J., Vieira, L., Dal Lago, A.  Plasma ß evolution through the solar corona during solar cycles 23 and 24.  The Astrophysical Journal, Volume 884,  1, 2019

About Skolkovo Institute of Science and Technology (Skoltech)

Skoltech is a private graduate research university. Established in 2011 in collaboration with the Massachusetts Institute of Technology (MIT), Skoltech cultivates a new generation of researchers and entrepreneurs, promotes advanced scientific knowledge and fosters innovative technology to address critical issues facing Russia and the world in the third millennium. Skoltech applies the best Russian and international research and educational practices, with particular emphasis on entrepreneurship and innovation. Web:


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