TY - JOUR AU - Timár, Anikó AU - Opitz, Andrea AU - Németh, Zoltán AU - Márkusné Bebesi, Zsófia AU - Biró, Nikolett AU - Facskó, Gábor István AU - Kobán, Gergely AU - Madár, Ákos TI - 3D pressure-corrected ballistic extrapolation of solar wind speed in the inner heliosphere JF - JOURNAL OF SPACE WEATHER AND SPACE CLIMATE J2 - J SPACE WEATHER SPACE CLIMATE PY - 2024 PG - 29 SN - 2115-7251 DO - 10.1051/swsc/2024010 UR - https://m2.mtmt.hu/api/publication/34792341 ID - 34792341 AB - 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. LA - English DB - MTMT ER - TY - CHAP AU - Facskó, Gábor István AU - Kobán, Gergely AU - Biró, Nikolett AU - Lkhagvadorj, Munkhjargal ED - Kovács, Tünde Anna ED - Nyikes, Zoltán ED - Berek, Tamás ED - Daruka, Norbert ED - Tóth, László TI - Space Weather Effects on Critical Infrastructure T2 - Critical Infrastructure Protection in the Light of the Armed Conflicts PB - Springer Nature Switzerland AG CY - Cham SN - 9783031479908 T3 - Advanced Sciences and Technologies for Security Applications, ISSN 1613-5113 PY - 2024 SP - 45 EP - 56 PG - 12 DO - 10.1007/978-3-031-47990-8_5 UR - https://m2.mtmt.hu/api/publication/34742478 ID - 34742478 N1 - Referált konferencia kiadvány AB - 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. LA - English DB - MTMT ER - TY - GEN AU - Madár, Ákos AU - Erdős, Géza AU - Németh, Zoltán AU - Opitz, Andrea AU - Facskó, Gábor István AU - Kobán, Gergely AU - Biró, Nikolett AU - Timár, Anikó TI - Coherent structures in the Inner Heliosphere: Interplanetary discontinuities PY - 2023 UR - https://m2.mtmt.hu/api/publication/34558001 ID - 34558001 LA - English DB - MTMT ER - TY - GEN AU - Biró, Nikolett AU - Opitz, Andrea AU - Németh, Zoltán AU - Timár, Anikó AU - Kobán, Gergely AU - Lkhagvadorj, Munkhjargal AU - Facskó, Gábor István AU - Madár, Ákos TI - Napszél struktúrák térbeli és időbeli fejlődése a belső helioszférában PY - 2023 UR - https://m2.mtmt.hu/api/publication/34557966 ID - 34557966 LA - Hungarian DB - MTMT ER - TY - GEN AU - Márkusné Bebesi, Zsófia AU - Biró, Nikolett AU - Erdős, Géza AU - Facskó, Gábor István AU - Földy, Lajos AU - Juhász, Antal AU - Kobán, Gergely AU - Kovács, Péter Gábor AU - Madár, Ákos AU - Talafha, Mohammed AU - Opitz, Andrea AU - Szalai, S. AU - Tátrallyay, Mariella AU - Timár, Anikó AU - Tomasik, M. AU - Németh, Zoltán TI - 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 TS - Wigner 121 Scientific Symposium, Budapest, September 18-20, 2023 PY - 2023 PG - 1 UR - https://m2.mtmt.hu/api/publication/34132965 ID - 34132965 N1 - poster presentation AB - 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. LA - English DB - MTMT ER - TY - GEN AU - Facskó, Gábor István AU - Lkhagvadorj, Munkhjargal AU - Opitz, Andrea TI - Conjugated observations of interplanetary shocks PY - 2023 UR - https://m2.mtmt.hu/api/publication/34024746 ID - 34024746 N1 - Szeminárium a Finn Meteorológiai Intézetben, Helsinkiben LA - English DB - MTMT ER - TY - GEN AU - Facskó, Gábor István AU - Kobán, Gergely AU - Biró, Nikolett AU - Lkhagvadorj, Munkhjargal TI - Extreme Space Weather Impact on Critical Infrastructure PY - 2023 PG - 12 UR - https://m2.mtmt.hu/api/publication/34024745 ID - 34024745 N1 - Meghívott előadás nemzetközi konferencián LA - English DB - MTMT ER - TY - GEN AU - Facskó, Gábor István TI - Hétköznapi Űrkutatás PY - 2023 UR - https://m2.mtmt.hu/api/publication/33806088 ID - 33806088 AB - Az űrkutatás és az űrtechnológiák mindennapjaink részévé váltak, eredményeik mindenki javára válnak. Az űrtechnológiák fejlesztését az államok helyett egyre inkább magáncégek veszik át és így egyre olcsóbb eszközök válnak elérhetővé. Az űrtevékenység a Föld környezetére koncentrál, eredményeivel megkönnyítve a hétköznapi tájékozódást navigációs rendszerek segítségével. A műholdas távközlés közel hozza egymáshoz a bolygó különböző részein élőket. A meteorológia, a mezőgazdaság és felderítés sem nélkülözheti a Föld körül keringő műholdakat. Szerencsés korban élünk, amikor az emberiség végre meg tudja védeni magát a bolygón kívülről érkező veszélyekkel szemben. LA - Hungarian DB - MTMT ER - TY - CHAP AU - Facskó, Gábor István AU - David, Sibeck AU - Ilja, Honkonen AU - Bór, József AU - German, Farinas Perez AU - Timár, Anikó AU - Yuri, Shprits AU - Pyry, Peitso AU - Laura, Degener AU - Eija, Tanskanen AU - Chandrasekhar, Anekallu AU - Szalai, Sándor AU - Kis, Árpád AU - Wesztergom, Viktor AU - Madár, Ákos AU - Biró, Nikolett AU - Kobán, Gergely AU - Illyés, András AU - Lkhagvadorj, Munkhjargal ED - Bacsárdi, László ED - Hirn, Attila TI - A földi magnetoszféra egy év hosszú magnetohidrodinamikai szimulációjánakösszehasonlítása Cluster mérésekkel T2 - Magyar Űrkutatási Fórum 2021 - Válogatott közlemények PB - Magyar Asztronautikai Társaság CY - Budapest SN - 9789637367311 PY - 2023 PG - 6 UR - https://m2.mtmt.hu/api/publication/33758323 ID - 33758323 LA - Hungarian DB - MTMT ER - TY - JOUR AU - Szalai, Sándor AU - Baracza, Mátyás Krisztián AU - Kárpi, Marcell AU - Szűcs, Péter AU - Metwaly, M. AU - Turai, Endre AU - Facskó, Gábor István AU - Zubair, M. AU - Szarka, László Csaba AU - Gribovszki, Katalin Eszter TI - Improving ERT Imaging of Small-Size 2D Targets Using Different Strategies JF - PURE AND APPLIED GEOPHYSICS J2 - PURE APPL GEOPHYS VL - 180 PY - 2023 SP - 157 EP - 185 PG - 29 SN - 0033-4553 DO - 10.1007/s00024-022-03204-8 UR - https://m2.mtmt.hu/api/publication/33532115 ID - 33532115 N1 - Institute of Earth Physics and Space Science (ELKH-EPSS), Sopron, Hungary Department of Geophysics, University of Miskolc, Miskolc-Egyetemváros, 3515, Hungary Research Institute of Applied Earth Sciences, University of Miskolc, Miskolc, Hungary Institute of Environmental Management, University of Miskolc, Miskolc, Hungary MTA-ME Geoengineering Research Group, Miskolc-Egyetemváros, Hungary Archaeology Department, College of Tourism and Archaeology, King Saud University, Riyadh, Saudi Arabia National Research Institute of Astronomy and Geophysics (NRIAG), Helwan, Cairo, Egypt Wigner Research Centre for Physics, Budapest, Hungary Department of Earth Science, IIT, Roorkee, 247667, India Export Date: 24 April 2023 Correspondence Address: Szalai, S.; Institute of Earth Physics and Space Science (ELKH-EPSS)Hungary; email: szalai@ggki.hu Funding details: European Commission, EC, EU, GI-2.3.2-15-2016-00010 Funding details: King Saud University, KSU Funding details: Excellent Young Talents Fund Program of Higher Education Institutions of Anhui Province Funding details: Nemzeti Kutatási Fejlesztési és Innovációs Hivatal, NKFIH; hu:NKFI, K-138969, RSP-2021/89 Funding text 1: This work was supported by the National Research, Development and Innovation Office, Hungary‐NKFIH, K-138969. S. Szalai is profoundly grateful for the support provided by topic “Optimizing natural resources based on state-of-the-art technologies” of the project of the Excellence Program for Higher Education Institutions. The authors would like to thank the Research Supporting Project number (RSP-2021/89), King Saud University, Riyadh, Saudi Arabia for funding this work. Support was received from the GINOP-2.3.2-15-2016-00010 “Development of enhanced engineering methods with the aim at utilization of subterranean energy resources” project of the Research Institute of Applied Earth Sciences of the University of Miskolc in the framework of the Széchenyi 2020 Plan, funded by the European Union, co-financed by the European Structural and Investment Funds. LA - English DB - MTMT ER -