Zobrazeno 1 - 10
of 38
pro vyhledávání: '"M Ala-Lahti"'
Publikováno v:
Annales Geophysicae, Vol 42, Pp 163-177 (2024)
In this work, we perform a statistical study of magnetic field fluctuations in the solar wind at 1 au using permutation entropy and complexity analysis and the investigation of the temporal variations of the Hurst exponents. Slow and fast wind, magne
Externí odkaz:
https://doaj.org/article/4a2dd2893caf47b4ad4ab16ebbd9a950
Autor:
M. Akhavan-Tafti, L. Johnson, R. Sood, J. A. Slavin, T. Pulkkinen, S. Lepri, E. Kilpua, D. Fontaine, A. Szabo, L. Wilson, G. Le, T. Y. Atilaw, M. Ala-Lahti, S. L. Soni, D. Biesecker, L. K. Jian, D. Lario
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 10 (2023)
The Space Weather Investigation Frontier (SWIFT) mission will aim at making major discoveries on the three-dimensional structure and dynamics of heliospheric structures that drive space weather. The focus will be on Interplanetary Coronal Mass Ejecti
Externí odkaz:
https://doaj.org/article/4091f28d72de4a488db4843c4e8d2c62
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 9 (2022)
Sheath regions of interplanetary coronal mass ejections (ICMEs) are formed when the upstream solar wind is deflected and compressed due to the propagation and expansion of the ICME. Small-scale flux ropes found in the solar wind can thus be swept int
Externí odkaz:
https://doaj.org/article/1a656ff6b165488598917518c4e8c76e
Autor:
E. K. J. Kilpua, D. Fontaine, S. W. Good, M. Ala-Lahti, A. Osmane, E. Palmerio, E. Yordanova, C. Moissard, L. Z. Hadid, M. Janvier
Publikováno v:
Annales Geophysicae, Vol 38, Pp 999-1017 (2020)
In this work, we investigate magnetic field fluctuations in three coronal mass ejection (CME)-driven sheath regions at 1 AU, with their speeds ranging from slow to fast. The data set we use consists primarily of high-resolution (0.092 s) magnetic
Externí odkaz:
https://doaj.org/article/d924c28382cf47a0819eb633cedea544
Autor:
A. Lakka, T. I. Pulkkinen, A. P. Dimmock, E. Kilpua, M. Ala-Lahti, I. Honkonen, M. Palmroth, O. Raukunen
Publikováno v:
Annales Geophysicae, Vol 37, Pp 561-579 (2019)
We study the response of the Earth's magnetosphere to fluctuating solar wind conditions during interplanetary coronal mass ejections (ICMEs) using the Grand Unified Magnetosphere-Ionosphere Coupling Simulation (GUMICS-4). The two ICME events occurred
Externí odkaz:
https://doaj.org/article/a8493871fbf7408bbea8542cc57d143f
Autor:
E. K. J. Kilpua, S. W. Good, M. Ala-Lahti, A. Osmane, D. Fontaine, L. Hadid, M. Janvier, E. Yordanova
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 7 (2021)
We report a statistical analysis of magnetic field fluctuations in 79 coronal mass ejection- (CME-) driven sheath regions that were observed in the near-Earth solar wind. Wind high-resolution magnetic field data were used to investigate 2 h regions a
Externí odkaz:
https://doaj.org/article/56c9549cac3c43159904a6a9e0c7425f
Publikováno v:
Annales Geophysicae, Vol 36, Pp 793-808 (2018)
We present a comprehensive statistical analysis of mirror mode waves and the properties of their plasma surroundings in sheath regions driven by interplanetary coronal mass ejection (ICME). We have constructed a semi-automated method to identify m
Externí odkaz:
https://doaj.org/article/cb1c1bbd625345b187df7321b028cb11
Interplanetary coronal mass ejections (ICMEs) contain magnetic field and velocity fluctuations across a wide range of scales. These fluctuations may be interpreted as Alfv\'enic wave packets propagating parallel or anti-parallel to the background mag
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b7ed425b092823d4d113fe6abcf4c443
http://arxiv.org/abs/2205.07751
http://arxiv.org/abs/2205.07751
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