Zobrazeno 1 - 10
of 144
pro vyhledávání: '"Przybylski, D."'
The Mg ii h&k lines are key diagnostics of the solar chromosphere. They are sensitive to the temperature, density, and non-thermal velocities in the chromosphere. The average Mg ii h&k line profiles arising from previous 3D chromospheric simulations
Externí odkaz:
http://arxiv.org/abs/2410.04594
Autor:
Witzke, V., Duehnen, H. B., Shapiro, A. I., Przybylski, D., Bhatia, T. S., Cameron, R., Solanki, S. K.
Publikováno v:
A&A 669, A157 (2023)
All cool main sequence stars including our Sun are thought to have magnetic fields. Observations of the Sun revealed that even in quiet regions small-scale turbulent magnetic fields are present. Simulations further showed that such magnetic fields af
Externí odkaz:
http://arxiv.org/abs/2211.02722
Autor:
Przybylski, D., Cameron, R., Solanki, S. K., Rempel, M., Leenaarts, J., Anusha, L. S., Witzke, V., Shapiro, A. I.
Publikováno v:
A&A 664, A91 (2022)
Detailed numerical models of chromosphere and corona are required to understand the heating of the solar atmosphere. An accurate treatment of the solar chromosphere is complicated by the effects arising from Non Local Thermodynamic Equilibrium (NLTE)
Externí odkaz:
http://arxiv.org/abs/2204.03126
Coronal loops are the basic building block of the upper solar atmosphere. Comprehending how these are energized, structured, and evolve is key to understanding stellar coronae. Here we investigate how the energy to heat the loop is generated by photo
Externí odkaz:
http://arxiv.org/abs/2112.11549
Autor:
Rempel, M., Przybylski, D.
Partially ionized plasmas, such as the solar chromosphere, require a generalized Ohm's law including the effects of ambipolar and Hall drift. While both describe transport processes that arise from the multifluid equations and are therefore of hyperb
Externí odkaz:
http://arxiv.org/abs/2111.13811
Autor:
Peter, H., Ballester, E. Alsina, Andretta, V., Auchere, F., Belluzzi, L., Bemporad, A., Berghmans, D., Buchlin, E., Calcines, A., Chitta, L. P., Dalmasse, K., Aleman, T. del Pino, Feller, A., Froment, C., Harrison, R., Janvier, M., Matthews, S., Parenti, S., Przybylski, D., Solanki, S. K., Stepan, J., Teriaca, L., Bueno, J. Trujillo
The magnetic activity of the Sun directly impacts the Earth and human life. Likewise, other stars will have an impact on the habitability of planets orbiting these host stars. The lack of information on the magnetic field in the higher atmospheric la
Externí odkaz:
http://arxiv.org/abs/2101.01566
Previous helioseismology of sunspots has been sensitive to both the structural and magnetic aspects of sunspot structure. We aim to develop a technique that is insensitive to the magnetic component so the two aspects can be more readily separated. We
Externí odkaz:
http://arxiv.org/abs/1806.01032
Publikováno v:
A&A 614, A73 (2018)
The use of instruments that record narrow band images at selected wavelengths is a common approach in solar observations. They allow the scanning of a spectral line by sampling the Stokes profiles with 2D images at each line position, but require a c
Externí odkaz:
http://arxiv.org/abs/1802.05028
Publikováno v:
Astronomy & Astrophysics / Astronomie et Astrophysique; 9/26/2024, Vol. 690, p1-16, 16p
In this paper, we show a "proof of concept" of the heating mechanism of the solar chromosphere due to wave dissipation caused by the effects of partial ionization. Numerical modeling of non-linear wave propagation in a magnetic flux tube, embedded in
Externí odkaz:
http://arxiv.org/abs/1602.03373