@article{MTMT:34792341, title = {3D pressure-corrected ballistic extrapolation of solar wind speed in the inner heliosphere}, url = {https://m2.mtmt.hu/api/publication/34792341}, author = {Timár, Anikó and Opitz, Andrea and Németh, Zoltán and Márkusné Bebesi, Zsófia and Biró, Nikolett and Facskó, Gábor István and Kobán, Gergely and Madár, Ákos}, doi = {10.1051/swsc/2024010}, journal-iso = {J SPACE WEATHER SPACE CLIMATE}, journal = {JOURNAL OF SPACE WEATHER AND SPACE CLIMATE}, unique-id = {34792341}, issn = {2115-7251}, abstract = {Solar wind parameters at different locations in the inner heliosphere can be estimated using various solar wind extrapolation methods. The simple ballistic method extrapolates solar wind parameters from the point of measurement to a chosen heliospheric position by assuming that major solar wind structures are persistent and arrive relatively unaltered to the target position. The method considers the rotation period of the Sun while assuming a constant solar wind speed during radial propagation. We improve the simple ballistic model by considering the interaction between the slow and the fast solar wind with a pressure-correction during the propagation. Instead of extrapolating from the position of a single spacecraft, we apply this pressure-corrected ballistic method to 2D speed maps of the solar source surface available from solar coronal models to determine the solar wind speed in the inner heliosphere in 3D, between latitudes of ±50°. We also take into account the effects of the solar differential rotation in our model. Our method is simple, fast and it can be applied to different source surface datasets. The results of our model are validated with in situ data from the ACE spacecraft. We find that the pressure-corrected ballistic method can give accurate predictions of the solar wind in 3D.}, year = {2024}, eissn = {2115-7251}, orcid-numbers = {Németh, Zoltán/0000-0001-9527-3447; Facskó, Gábor István/0000-0001-9502-2816} } @article{MTMT:34768151, title = {Jovian Magnetosheath Turbulence Driven by Whistler}, url = {https://m2.mtmt.hu/api/publication/34768151}, author = {Dwivedi, N.K. and Singh, S. and Khodachenko, M.L. and Sasunov, Y.L. and Kovács, Péter Gábor and Kislyakova, K.G. and Kis, A.}, doi = {10.1088/1402-4896/ad3484}, journal-iso = {PHYS SCR}, journal = {PHYSICA SCRIPTA}, volume = {99}, unique-id = {34768151}, issn = {0031-8949}, year = {2024}, eissn = {1402-4896} } @{MTMT:34742478, title = {Space Weather Effects on Critical Infrastructure}, url = {https://m2.mtmt.hu/api/publication/34742478}, author = {Facskó, Gábor István and Kobán, Gergely and Biró, Nikolett and Lkhagvadorj, Munkhjargal}, booktitle = {Critical Infrastructure Protection in the Light of the Armed Conflicts}, doi = {10.1007/978-3-031-47990-8_5}, unique-id = {34742478}, abstract = {Gas pipelines, transmission lines, overhead wires, transformers, GNSS navigation, and telecommunication systems are part of critical infrastructure. Industry, transportation, service operations, farming, and everyday life highly depend on this infrastructure. However, these systems are very sensitive to solar activity. Therefore, all activities above are vulnerable and defenseless against the catastrophic changes in Earth’s cosmic environment. The Solar System is dominated by the influence of our star. In the Solar System, all objects are gravitationally bound and the radiation of the Sun provides the energy for example for the terrestrial biosphere. A small fraction of the energy produced in the core of our star turns into a magnetic field and emits the constant high-velocity flow, the solar wind. Solar magnetic activity produces radiation and ejects matter from the upper atmosphere of our star. The magnetic field of the solar wind interacts with the planetary magnetic fields and atmospheres. These phenomena, called Space Weather have a serious influence on the radiation environment of Earth where telecommunication, Global Navigation Satellite System, meteorological, and other purpose satellites are located. The conductivity and transparency of the higher partly ionized atmospheric layer, the ionosphere also depend on solar radiation and activity. This fact makes the navigation and communication systems dependent on solar activity. Finally, the solar magnetic activity creates magnetic variations in the terrestrial magnetic field and induces currents in gas pipelines, transmission lines, overhead wires, and transformers. In this short briefing, we introduce the solar activity phenomena, and their influence on our planet’s cosmic neighborhood and pro- vide a detailed description of the Space Weather effects on critical infrastructure. We describe the Hungarian national and global space weather forecast centres and capabilities. Finally, we share some guidelines on how to prepare for extreme space weather events.}, year = {2024}, pages = {45-56}, orcid-numbers = {Facskó, Gábor István/0000-0001-9502-2816} } @article{MTMT:34557456, title = {The Comet Interceptor Mission}, url = {https://m2.mtmt.hu/api/publication/34557456}, author = {Jones, G.H. and Snodgrass, C. and Tubiana, C. and Küppers, M. and Kawakita, H. and Lara, L.M. and Agarwal, J. and André, N. and Attree, N. and Auster, U. and Bagnulo, S. and Bannister, M. and Beth, A. and Bowles, N. and Coates, A. and Colangeli, L. and Corral, van Damme C. and Da, Deppo V. and De, Keyser J. and Della, Corte V. and Edberg, N. and El-Maarry, M.R. and Faggi, S. and Fulle, M. and Funase, R. and Galand, M. and Goetz, C. and Groussin, O. and Guilbert-Lepoutre, A. and Henri, P. and Kasahara, S. and Kereszturi, A. and Kidger, M. and Knight, M. and Kokotanekova, R. and Kolmasova, I. and Kossacki, K. and Kührt, E. and Kwon, Y. and La, Forgia F. and Levasseur-Regourd, A.-C. and Lippi, M. and Longobardo, A. and Marschall, R. and Morawski, M. and Muñoz, O. and Näsilä, A. and Nilsson, H. and Opitom, C. and Pajusalu, M. and Pommerol, A. and Prech, L. and Rando, N. and Ratti, F. and Rothkaehl, H. and Rotundi, A. and Rubin, M. and Sakatani, N. and Sánchez, J.P. and Simon, Wedlund C. and Stankov, A. and Thomas, N. and Toth, I. and Villanueva, G. and Vincent, J.-B. and Volwerk, M. and Wurz, P. and Wielders, A. and Yoshioka, K. and Aleksiejuk, K. and Alvarez, F. and Amoros, C. and Aslam, S. and Atamaniuk, B. and Baran, J. and Barciński, T. and Beck, T. and Behnke, T. and Berglund, M. and Bertini, I. and Bieda, M. and Binczyk, P. and Busch, M.-D. and Cacovean, A. and Capria, M.T. and Carr, C. and Castro, Marín J.M. and Ceriotti, M. and Chioetto, P. and Chuchra-Konrad, A. and Cocola, L. and Colin, F. and Crews, C. and Cripps, V. and Cupido, E. and Dassatti, A. and Davidsson, B.J.R. and De, Roche T. and Deca, J. and Del, Togno S. and Dhooghe, F. and Donaldson, Hanna K. and Eriksson, A. and Fedorov, A. and Fernández-Valenzuela, E. and Ferretti, S. and Floriot, J. and Frassetto, F. and Fredriksson, J. and Garnier, P. and Gaweł, D. and Génot, V. and Gerber, T. and Glassmeier, K.-H. and Granvik, M. and Grison, B. and Gunell, H. and Hachemi, T. and Hagen, C. and Hajra, R. and Harada, Y. and Hasiba, J. and Haslebacher, N. and Herranz, De La Revilla M.L. and Hestroffer, D. and Hewagama, T. and Holt, C. and Hviid, S. and Iakubivskyi, I. and Inno, L. and Irwin, P. and Ivanovski, S. and Jansky, J. and Jernej, I. and Jeszenszky, H. and Jimenéz, J. and Jorda, L. and Kama, M. and Kameda, S. and Kelley, M.S.P. and Klepacki, K. and Kohout, T. and Kojima, H. and Kowalski, T. and Kuwabara, M. and Ladno, M. and Laky, G. and Lammer, H. and Lan, R. and Lavraud, B. and Lazzarin, M. and Le, Duff O. and Lee, Q.-M. and Lesniak, C. and Lewis, Z. and Lin, Z.-Y. and Lister, T. and Lowry, S. and Magnes, W. and Markkanen, J. and Martinez, Navajas I. and Martins, Z. and Matsuoka, A. and Matyjasiak, B. and Mazelle, C. and Mazzotta, Epifani E. and Meier, M. and Michaelis, H. and Micheli, M. and Migliorini, A. and Millet, A.-L. and Moreno, F. and Mottola, S. and Moutounaick, B. and Muinonen, K. and Müller, D.R. and Murakami, G. and Murata, N. and Myszka, K. and Nakajima, S. and Németh, Zoltán and Nikolajev, A. and Nordera, S. and Ohlsson, D. and Olesk, A. and Ottacher, H. and Ozaki, N. and Oziol, C. and Patel, M. and Savio, Paul A. and Penttilä, A. and Pernechele, C. and Peterson, J. and Petraglio, E. and Piccirillo, A.M. and Plaschke, F. and Polak, S. and Postberg, F. and Proosa, H. and Protopapa, S. and Puccio, W. and Ranvier, S. and Raymond, S. and Richter, I. and Rieder, M. and Rigamonti, R. and Ruiz, Rodriguez I. and Santolik, O. and Sasaki, T. and Schrödter, R. and Shirley, K. and Slavinskis, A. and Sodor, B. and Soucek, J. and Stephenson, P. and Stöckli, L. and Szewczyk, P. and Troznai, G. and Uhlir, L. and Usami, N. and Valavanoglou, A. and Vaverka, J. and Wang, W. and Wang, X.-D. and Wattieaux, G. and Wieser, M. and Wolf, S. and Yano, H. and Yoshikawa, I. and Zakharov, V. and Zawistowski, T. and Zuppella, P. and Rinaldi, G. and Ji, H.}, doi = {10.1007/s11214-023-01035-0}, journal-iso = {SPACE SCI REV}, journal = {SPACE SCIENCE REVIEWS}, volume = {220}, unique-id = {34557456}, issn = {0038-6308}, year = {2024}, eissn = {1572-9672}, orcid-numbers = {Németh, Zoltán/0000-0001-9527-3447} } @misc{MTMT:34558101, title = {Study of the terrestrial ring current by the magnetic field observations of multi-spacecraft missions}, url = {https://m2.mtmt.hu/api/publication/34558101}, author = {Tomasik, M. and Kovács, Péter Gábor}, unique-id = {34558101}, year = {2023} } @misc{MTMT:34558079, title = {Elektromos áramok vizsgálata a földi magnetoszférában}, url = {https://m2.mtmt.hu/api/publication/34558079}, author = {Tomasik, M. and Kovács, Péter Gábor}, unique-id = {34558079}, year = {2023} } @misc{MTMT:34558076, title = {Swarm műholdak GPS és mágneses regisztrátumainak elemzése a felső ionoszféra dinamikai folyamatainak megismerésére}, url = {https://m2.mtmt.hu/api/publication/34558076}, author = {Kovács, Péter Gábor and Heilig, B. and Kobán, Gergely}, unique-id = {34558076}, year = {2023} } @misc{MTMT:34558069, title = {Az ionoszféra vizsgálata a Swarm műholdak GPS jeleinek szcintillációi alapján}, url = {https://m2.mtmt.hu/api/publication/34558069}, author = {Kobán, Gergely and Kovács, Péter Gábor and Németh, Zoltán}, unique-id = {34558069}, year = {2023}, orcid-numbers = {Németh, Zoltán/0000-0001-9527-3447} } @misc{MTMT:34558001, title = {Coherent structures in the Inner Heliosphere: Interplanetary discontinuities}, url = {https://m2.mtmt.hu/api/publication/34558001}, author = {Madár, Ákos and Erdős, Géza and Németh, Zoltán and Opitz, Andrea and Facskó, Gábor István and Kobán, Gergely and Biró, Nikolett and Timár, Anikó}, unique-id = {34558001}, year = {2023}, orcid-numbers = {Németh, Zoltán/0000-0001-9527-3447; Facskó, Gábor István/0000-0001-9502-2816} } @misc{MTMT:34557987, title = {Solar wind propagation throughout the 3D inner heliosphere}, url = {https://m2.mtmt.hu/api/publication/34557987}, author = {Opitz, Andrea and Timár, Anikó and Biró, Nikolett and Kobán, Gergely and Dálya, Zsuzsanna and Németh, Zoltán}, unique-id = {34557987}, year = {2023}, orcid-numbers = {Németh, Zoltán/0000-0001-9527-3447} }