Astronomical Institute
Topic
Numerical simulation of jets in the solar atmosphere
PhD. program
Astronomy and Astrophysics
Year of admission
2025
Name of the supervisor
Mgr. Peter Gömöry, PhD.
Contact:
Receiving school
Faculty of Mathematics, Physics and Informatics
Annotation
Language of Thesis: English
Secondary language: Slovak
Affiliation: Astronomical Institute of the Slovak Academy of Sciences, Tatranská Lomnica, 059 60 Vysoké Tatry, Slovakia
Consultant: Prof. Teimuraz Zaqarashvili, PhD. (temury.zaqarashvili@iliauni.edu.ge)
Affiliation: Ilia State University, Tbilisi, Georgia
Sylabus
Focus of Thesis: Solar plasma jets are highly dynamic and complex phenomena occurring in the Sun’s atmosphere. They play a critical role in energy and mass transfer within the solar atmosphere and contribute to space weather effects that impact Earth. Despite substantial progress in solar physics, many mysteries remain, such as the rapid heating of plasma to coronal temperatures and the short lifetimes of jets like type II spicules. These processes are believed to be driven by various instabilities, including Kelvin-Helmholtz (KH), kink, and Rayleigh-Taylor instabilities, within magnetised plasma flows.
This thesis aims to investigate the dynamics, stability, and heating mechanisams of solar plasma jets through advanced numerical simulations. By integrating theoretical models, high-resolution numerical simulations, and observational data, the research seeks to provide a deeper understanding of how instabilities and other processes contribute to the behaviour of solar plasma jets and their role in the coronal heating problem. The outcomes are expected to enhance our understanding of solar atmospheric dynamics and inform space weather prediction models.
Objectives: The overarching goal of this thesis is to deepen our understanding of the dynamics of solar plasma jets and the associated coronal heating problem. By employing advanced numerical simulations, the project aims to unravel the physical processes driving these phenomena, which are critical for advancing solar physics and improving space weather prediction.
Requirements: good background in physics, basic knowledge in programing (e. g., IDL).
Research field: Research of physical properties and processes in the atmosphere of the Sun.
Literature:
[1] Beckers, J. M. (1968). Solar Phys., 3, 367.
[2] De Pontieu, B., McIntosh, S., Hansteen, V. H., et al. (2007). PASJ, 59, S655.
[3] Rouppe van der Voort, L., Leenaarts, J., de Pontieu, B., et al. (2009). ApJ, 705, 272.
[4] Tsiropoula, G., Tziotziou, K., Kontogiannis, I., et al. (2012). Space Sci. Rev., 169, 181.
[5] Shibata, K., Ishido, Y., Acton, L. W., et al. (1992). PASJ, 44, L173.
[6] Moore, R. L., Sterling, A. C., Falconer, D. A., & Robe, D. (2013). ApJ, 769, 134.
[7] Nishizuka, N., et al. (2011). ApJ, 731, 43.
[8] Sterling, A. C., Moore, R. L., Falconer, D. A., & Adams, M. (2015). Nature, 523, 437.
[9] Murawski, K. & Zaqarashvili, T. V. (2010). A&A, 519, A8.
[10] Zaqarashvili, T. V., Vörös, Z., Narita, Y., & Bruno, R. (2014a). ApJL, 783, L19.
[11] Zaqarashvili, T. V., Vörös, Z., & Zhelyazkov, I. (2014b). A&A, 561, A62.
[12] Zaqarashvili, T. V. (2020). ApJL, 893, L46.
[13] Zaqarashvili, T. V., Lomineishvili, S., Leitner, P., et al. (2021). A&A, 649, A179.
[14] Hollweg, J. V. (1982). ApJ, 257, 345.
[15] Chandrasekhar, S. (1961). Hydrodynamic and Hydromagnetic Stability. Oxford Univ. Press.
For further information please see https://www.astro.sk/en/study/phd-study/
Secondary language: Slovak
Affiliation: Astronomical Institute of the Slovak Academy of Sciences, Tatranská Lomnica, 059 60 Vysoké Tatry, Slovakia
Consultant: Prof. Teimuraz Zaqarashvili, PhD. (temury.zaqarashvili@iliauni.edu.ge)
Affiliation: Ilia State University, Tbilisi, Georgia
Sylabus
Focus of Thesis: Solar plasma jets are highly dynamic and complex phenomena occurring in the Sun’s atmosphere. They play a critical role in energy and mass transfer within the solar atmosphere and contribute to space weather effects that impact Earth. Despite substantial progress in solar physics, many mysteries remain, such as the rapid heating of plasma to coronal temperatures and the short lifetimes of jets like type II spicules. These processes are believed to be driven by various instabilities, including Kelvin-Helmholtz (KH), kink, and Rayleigh-Taylor instabilities, within magnetised plasma flows.
This thesis aims to investigate the dynamics, stability, and heating mechanisams of solar plasma jets through advanced numerical simulations. By integrating theoretical models, high-resolution numerical simulations, and observational data, the research seeks to provide a deeper understanding of how instabilities and other processes contribute to the behaviour of solar plasma jets and their role in the coronal heating problem. The outcomes are expected to enhance our understanding of solar atmospheric dynamics and inform space weather prediction models.
Objectives: The overarching goal of this thesis is to deepen our understanding of the dynamics of solar plasma jets and the associated coronal heating problem. By employing advanced numerical simulations, the project aims to unravel the physical processes driving these phenomena, which are critical for advancing solar physics and improving space weather prediction.
Requirements: good background in physics, basic knowledge in programing (e. g., IDL).
Research field: Research of physical properties and processes in the atmosphere of the Sun.
Literature:
[1] Beckers, J. M. (1968). Solar Phys., 3, 367.
[2] De Pontieu, B., McIntosh, S., Hansteen, V. H., et al. (2007). PASJ, 59, S655.
[3] Rouppe van der Voort, L., Leenaarts, J., de Pontieu, B., et al. (2009). ApJ, 705, 272.
[4] Tsiropoula, G., Tziotziou, K., Kontogiannis, I., et al. (2012). Space Sci. Rev., 169, 181.
[5] Shibata, K., Ishido, Y., Acton, L. W., et al. (1992). PASJ, 44, L173.
[6] Moore, R. L., Sterling, A. C., Falconer, D. A., & Robe, D. (2013). ApJ, 769, 134.
[7] Nishizuka, N., et al. (2011). ApJ, 731, 43.
[8] Sterling, A. C., Moore, R. L., Falconer, D. A., & Adams, M. (2015). Nature, 523, 437.
[9] Murawski, K. & Zaqarashvili, T. V. (2010). A&A, 519, A8.
[10] Zaqarashvili, T. V., Vörös, Z., Narita, Y., & Bruno, R. (2014a). ApJL, 783, L19.
[11] Zaqarashvili, T. V., Vörös, Z., & Zhelyazkov, I. (2014b). A&A, 561, A62.
[12] Zaqarashvili, T. V. (2020). ApJL, 893, L46.
[13] Zaqarashvili, T. V., Lomineishvili, S., Leitner, P., et al. (2021). A&A, 649, A179.
[14] Hollweg, J. V. (1982). ApJ, 257, 345.
[15] Chandrasekhar, S. (1961). Hydrodynamic and Hydromagnetic Stability. Oxford Univ. Press.
For further information please see https://www.astro.sk/en/study/phd-study/