Zobrazeno 1 - 10
of 245
pro vyhledávání: '"M. Palmroth"'
Publikováno v:
Geoscientific Model Development, Vol 17, Pp 6401-6413 (2024)
Automatically adaptive grid resolution is a common way of improving simulation accuracy while keeping computational efficiency at a manageable level. In space physics, adaptive grid strategies are especially useful as simulation volumes are extreme,
Externí odkaz:
https://doaj.org/article/6991b13253ff4dc9bee9a4a6e59a1796
Autor:
M. Alho, G. Cozzani, I. Zaitsev, F. T. Kebede, U. Ganse, M. Battarbee, M. Bussov, M. Dubart, S. Hoilijoki, L. Kotipalo, K. Papadakis, Y. Pfau-Kempf, J. Suni, V. Tarvus, A. Workayehu, H. Zhou, M. Palmroth
Publikováno v:
Annales Geophysicae, Vol 42, Pp 145-161 (2024)
Magnetic reconnection is a crucially important process for energy conversion in plasma physics, with the substorm cycle of Earth's magnetosphere and solar flares being prime examples. While 2D models have been widely applied to study reconnection, in
Externí odkaz:
https://doaj.org/article/bb5b2047d4044a259685d023a62e4c42
Autor:
M. Grandin, H. K. Connor, S. Hoilijoki, M. Battarbee, Y. Pfau-Kempf, U. Ganse, K. Papadakis, M. Palmroth
Publikováno v:
Earth and Planetary Physics, Vol 8, Iss 1, Pp 70-88 (2024)
Solar wind charge exchange produces emissions in the soft X-ray energy range which can enable the study of near-Earth space regions such as the magnetopause, the magnetosheath and the polar cusps by remote sensing techniques. The Solar wind Magnetosp
Externí odkaz:
https://doaj.org/article/ba341cb400274ff4858819e3b07b067f
Autor:
J. Suni, M. Palmroth, L. Turc, M. Battarbee, G. Cozzani, M. Dubart, U. Ganse, H. George, E. Gordeev, K. Papadakis, Y. Pfau-Kempf, V. Tarvus, F. Tesema, H. Zhou
Publikováno v:
Annales Geophysicae, Vol 41, Pp 551-568 (2023)
Magnetosheath jets are plasma structures that are characterised by enhanced dynamic pressure and/or plasma velocity. In this study, we investigate the formation of magnetosheath jets in four two-dimensional simulation runs of the global magnetospheri
Externí odkaz:
https://doaj.org/article/2648ef58e4d7414b9e2744ac7b300bbd
Autor:
F. Tesema, M. Palmroth, L. Turc, H. Zhou, G. Cozzani, M. Alho, Y. Pfau‐Kempf, K. Horaites, I. Zaitsev, M. Grandin, M. Battarbee, U. Ganse, A. Workayehu, J. Suni, K. Papadakis, M. Dubart, V. Tarvus
Publikováno v:
Geophysical Research Letters, Vol 51, Iss 3, Pp n/a-n/a (2024)
Abstract Flux transfer events (FTEs) are transient magnetic flux ropes at Earth's dayside magnetopause formed due to magnetic reconnection. As they move across the magnetopause surface, they can generate disturbances in the ultralow frequency (ULF) r
Externí odkaz:
https://doaj.org/article/f045b888cbd3482bbdf8bb16684804bb
Autor:
K. Papadakis, Y. Pfau-Kempf, U. Ganse, M. Battarbee, M. Alho, M. Grandin, M. Dubart, L. Turc, H. Zhou, K. Horaites, I. Zaitsev, G. Cozzani, M. Bussov, E. Gordeev, F. Tesema, H. George, J. Suni, V. Tarvus, M. Palmroth
Publikováno v:
Geoscientific Model Development, Vol 15, Pp 7903-7912 (2022)
Numerical simulation models that are used to investigate the near-Earth space plasma environment require sophisticated methods and algorithms as well as high computational power. Vlasiator 5.0 is a hybrid-Vlasov plasma simulation code that is able to
Externí odkaz:
https://doaj.org/article/d52aceff34024ddca9e69e0e6f3f48bd
Autor:
V. Tarvus, L. Turc, M. Battarbee, J. Suni, X. Blanco-Cano, U. Ganse, Y. Pfau-Kempf, M. Alho, M. Dubart, M. Grandin, A. Johlander, K. Papadakis, M. Palmroth
Publikováno v:
Annales Geophysicae, Vol 39, Pp 911-928 (2021)
The foreshock located upstream of Earth's bow shock hosts a wide variety of phenomena related to the reflection of solar wind particles from the bow shock and the subsequent formation of ultra-low-frequency (ULF) waves. In this work, we investigate f
Externí odkaz:
https://doaj.org/article/d352177b4bfc43cab53c28b2f5f1b452
Autor:
A. Runov, M. Grandin, M. Palmroth, M. Battarbee, U. Ganse, H. Hietala, S. Hoilijoki, E. Kilpua, Y. Pfau-Kempf, S. Toledo-Redondo, L. Turc, D. Turner
Publikováno v:
Annales Geophysicae, Vol 39, Pp 599-612 (2021)
We present results of noon–midnight meridional plane global hybrid-Vlasov simulations of the magnetotail ion dynamics under a steady southward interplanetary magnetic field using the Vlasiator model. The simulation results show magnetotail reconnec
Externí odkaz:
https://doaj.org/article/3652868923354ed4b46191152677e3f8
Autor:
M. Palmroth, S. Raptis, J. Suni, T. Karlsson, L. Turc, A. Johlander, U. Ganse, Y. Pfau-Kempf, X. Blanco-Cano, M. Akhavan-Tafti, M. Battarbee, M. Dubart, M. Grandin, V. Tarvus, A. Osmane
Publikováno v:
Annales Geophysicae, Vol 39, Pp 289-308 (2021)
Magnetosheath jets are regions of high dynamic pressure, which can traverse from the bow shock towards the magnetopause. Recent modelling efforts, limited to a single jet and a single set of upstream conditions, have provided the first estimations ab
Externí odkaz:
https://doaj.org/article/b632bc9236d24dbcb489b8d301e621ee
Autor:
M. Palmroth, M. Grandin, T. Sarris, E. Doornbos, S. Tourgaidis, A. Aikio, S. Buchert, M. A. Clilverd, I. Dandouras, R. Heelis, A. Hoffmann, N. Ivchenko, G. Kervalishvili, D. J. Knudsen, A. Kotova, H.-L. Liu, D. M. Malaspina, G. March, A. Marchaudon, O. Marghitu, T. Matsuo, W. J. Miloch, T. Moretto-Jørgensen, D. Mpaloukidis, N. Olsen, K. Papadakis, R. Pfaff, P. Pirnaris, C. Siemes, C. Stolle, J. Suni, J. van den IJssel, P. T. Verronen, P. Visser, M. Yamauchi
Publikováno v:
Annales Geophysicae, Vol 39, Pp 189-237 (2021)
The lower-thermosphere–ionosphere (LTI) system consists of the upper atmosphere and the lower part of the ionosphere and as such comprises a complex system coupled to both the atmosphere below and space above. The atmospheric part of the LTI is dom
Externí odkaz:
https://doaj.org/article/cfe2c3bae6e04b5097c10b6750012a54