@article{MTMT:35293810,
	title = {Directional discontinuities in the inner heliosphere from Parker Solar Probe and Solar Orbiter observations},
	url = {https://m2.mtmt.hu/api/publication/35293810},
	author = {Madár, Ákos and Opitz, Andrea and Erdős, Géza and Timár, Anikó and Biró, Nikolett and Kobán, Gergely and Szabo, A. and Németh, Zoltán},
	doi = {10.1051/0004-6361/202450684},
	journal-iso = {ASTRON ASTROPHYS},
	journal = {ASTRONOMY & ASTROPHYSICS},
	unique-id = {35293810},
	issn = {0004-6361},
	abstract = {Directional discontinuities (DDs) are common structures in the solar wind plasma and are among the most important discontinuities besides shock waves. The Parker Solar Probe and Solar Orbiter spacecraft currently provide whole new insight into the inner heliosphere in spatial coverage and timescales. We search for DDs and classify them into subgroups of tangential (TD) and rotational (RD) discontinuities. The analysis of the DD thicknesses allows us to test different theories about their origin and evolution. We applied an automatic algorithm to select discontinuities between heliocentric distances of 0.06-1.01 AU. The method uses the spatial rotation of the magnetic field to identify the DDs and minimum variance analysis to determine the normal vector of the discontinuity surface. A classification into TDs and RDs was carried out using the magnetic field data and the Walén test in both the spacecraft and the deHoffmann-Teller frame. With strict conditions, we found more than 140\,000 DDs in the time intervals. We find that the spatial density of DDs decreases with increasing radial distance from the Sun in the innermost heliosphere. The comprehensive analysis revealed that most of the DD, for which the normal component of the magnetic field is small are in fact TDs, regardless of the jump in field magnitude. After the classification, we were able to determine the radial thickness evolution for the TDs and RDs separately. We found that the thickness of RDs decreases from 0.06 to 0.30 AU, and beyond this (0.30 – 1.01 AU) it increases with the local ion inertial length. This characteristic scaling is present for TDs throughout between 0.06 and 1.01 AU. Our results give us a simple classification tool for future studies of DDs, that is based only on magnetic field measurements. After we analyzed the DD thickness, we observationally confirmed that RDs are produced by Alfvén-wave steepening, while the TDs are most likely the boundaries of flux tubes.},
	year = {2024},
	eissn = {1432-0746},
	orcid-numbers = {Németh, Zoltán/0000-0001-9527-3447}
}

@article{MTMT:35138918,
	title = {The response of the cometary ionosphere to space weather forcing},
	url = {https://m2.mtmt.hu/api/publication/35138918},
	author = {Timár, Anikó and Németh, Zoltán and Burch, J.L.},
	doi = {10.1093/mnras/stae1556},
	journal-iso = {MON NOT R ASTRON SOC},
	journal = {MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY},
	volume = {532},
	unique-id = {35138918},
	issn = {0035-8711},
	year = {2024},
	eissn = {1365-2966},
	pages = {1402-1409},
	orcid-numbers = {Németh, Zoltán/0000-0001-9527-3447}
}

@article{MTMT:35093466,
	title = {A mágneses csend világa. Új eszköz a hazai kutatásokhoz},
	url = {https://m2.mtmt.hu/api/publication/35093466},
	author = {Erdős, Géza and Biró, Nikolett and Németh, Zoltán and Veres, Miklós and Hevesi, László and Lemperger, István and Wesztergom, Viktor},
	journal-iso = {TERMÉSZET VILÁGA},
	journal = {TERMÉSZET VILÁGA},
	volume = {155},
	unique-id = {35093466},
	issn = {0040-3717},
	year = {2024},
	pages = {2-7},
	orcid-numbers = {Németh, Zoltán/0000-0001-9527-3447}
}

@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},
	volume = {14},
	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: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: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}
}

@misc{MTMT:34557966,
	title = {Napszél struktúrák térbeli és időbeli fejlődése a belső helioszférában},
	url = {https://m2.mtmt.hu/api/publication/34557966},
	author = {Biró, Nikolett and Opitz, Andrea and Németh, Zoltán and Timár, Anikó and Kobán, Gergely and Lkhagvadorj, Munkhjargal and Facskó, Gábor István and Madár, Ákos},
	unique-id = {34557966},
	year = {2023},
	orcid-numbers = {Németh, Zoltán/0000-0001-9527-3447; Facskó, Gábor István/0000-0001-9502-2816}
}

@misc{MTMT:34132965,
	title = {Wigner Research Centre for Physics, Institute for Particle and Nuclear Physics, Dept. of Space Physics and Space Technology. Wigner 121 Scientific Symposium, Budapest, September 18-20, 2023},
	url = {https://m2.mtmt.hu/api/publication/34132965},
	author = {Márkusné Bebesi, Zsófia and Biró, Nikolett and Erdős, Géza and Facskó, Gábor István and Földy, Lajos and Juhász, Antal and Kobán, Gergely and Kovács, Péter Gábor and Madár, Ákos and Talafha, Mohammed and Opitz, Andrea and Szalai, S. and Tátrallyay, Mariella and Timár, Anikó and Tomasik, M. and Németh, Zoltán},
	unique-id = {34132965},
	abstract = {The main research interest of our Department is the Solar System and its physical processes. It includes a complex regime of interactions, like the study of the solar interior, its physical processes, and the effect the solar wind and the interplanetary magnetic field on the ionospheres, and/or magnetospheres of planets, moons, and other objects in our Solar System (like comets). We are interested in comparing and finding analogies on the plasma environments of planets as well. Also it is vital to understand how our direct cosmic environment can affect our own planet, so space weather is another important topic that we focus on.
		In order to engage in answering these questions we use the science data measured by several different space missions. We are actively participating in the international mission teams, and take part in data analysis and the publication of new results. Our team has been involved in several major space missions from the earliest planning phases through the development, building and testing of onboard instruments and finally the evaluation of the measurements in space. The paper presents some of our current researches and achievements.},
	year = {2023},
	orcid-numbers = {Facskó, Gábor István/0000-0001-9502-2816; Németh, Zoltán/0000-0001-9527-3447}
}