Role of periodic fluctuations in solar wind-magnetosphere coupling |
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| Institution: | 1. Department of Physics, University of Kerala, Kariavattom, Trivandrum 695 581, India;2. Space Physics Laboratory, Vikram Sarabhai Space Centre, Trivandrum 695 022, India;1. Laboratório de radioisótopos, Departamento de análises Clinicas, Universidade Federal de Minas Gerais (UFMG), Avenida Presidente Antônio Carlos, 6627, Belo Horizonte, Minas Gerais, Brazil;2. Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI, 53705, USA;3. Laboratório de Bioengenharia, Universidade Federal de Itajubá (UNIFEI), Rua Irmã Ivone Drumond, 200, Itabira, Minas Gerais, Brazil;4. Department of Nuclear Medicine, Radiology, Medical Physics and Clinical Pathology, Santa Maria della Misericordia Hospital, Rovigo, Italy;5. Department of Drug Discovery and Pharmaceutical Sciences, Medical University of South Carolina, USA |
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| Abstract: | In this paper, the behaviour of the fluctuating component in the solar wind parameters (V, Bz), the auroral electrojet indices (AU, AL), the ring current index (Dst) and the interplanetary electric field (V × B2) during 10 magnetic storms is analysed to understand the solar wind-magnetosphere coupling. It is found that during the moderate storms (Dst > −100 nT), the fluctuating component of 3–4 h periodicity is clearly discernible in all the parameters, and during the intense storms (Dst < −100 nT) the periodic fluctuations are not well defined. |
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