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Based on the data of the solar wind (SW) measurements of the OMNI base for the period 1976-2019, the behavior of SW types as well as plasma and interplanetary magnetic field (IMF) parameters for 21-24 solar cycles (SCs) is studied. It is…

Solar and Stellar Astrophysics · Physics 2023-05-02 Yuri I. Yermolaev , Irina G. Lodkina , Aleksander A. Khokhlachev , Mikhail Yu. Yermolaev

The outflowing magnetized wind from a host star shapes planetary and exoplanetary magnetospheres dictating the extent of its impact. We carry out three-dimensional (3D) compressible magnetohydrodynamic (MHD) simulations of the interactions…

Earth and Planetary Astrophysics · Physics 2019-06-05 Srijan Bharati Das , Arnab Basak , Dibyendu Nandy , Bhargav Vaidya

The pressure balance at the magnetopause is formed by magnetic field and plasma in the magnetosheath, on one side, and inside the magnetosphere, on the other side. In the approach of dipole earth's magnetic field configuration and…

Earth and Planetary Astrophysics · Physics 2011-10-25 A. V. Suvorova , A. V. Dmitriev

This paper addresses the fundamental science question: "How does solar wind energy flow through the Earth's magnetosphere, how is it converted and distributed?". We need to understand how the Sun creates the heliosphere, and how the planets…

The impact of high-speed jets -- dynamic pressure enhancements in the magnetosheath -- on the Earth's magnetopause has been observed to trigger local magnetic reconnection. We perform a three-dimensional hybrid simulation to study the…

Space Physics · Physics 2024-06-19 J. Ng , L. -J. Chen , Y. Omelchenko

We used the Lyon-Fedder-Mobarry global magnetohydrodynamics model to study the effects of the interplanetary magnetic field (IMF) IMF $\mathit{B}_{y}$ component on the coupling between the solar wind and magnetosphere-ionosphere system.…

Space Physics · Physics 2016-06-06 P. Tenfjord , N. Østgaard , K. Snekvik , K. M. Laundal , J. P. Reistad , S. Haaland , S. E. Milan

Based on global hybrid simulation results, we predict that foreshock turbulence can reach the magnetopause and lead to reconnection as well as Earth-sized indents. Both the interplanetary magnetic field (IMF) and solar wind are constant in…

Space Physics · Physics 2021-07-07 Li-Jen Chen , Jonathan Ng , Yuri Omelchenko , Shan Wang

The location of the terrestrial magnetopause (MP) and it's subsolar stand-off distance depends not only on the solar wind dynamic pressure and the interplanetary magnetic field (IMF), both of which play a crucial role in determining it's…

Space Physics · Physics 2017-09-06 Madhusudan Ingale , P. Janardhan , K. Fujiki , Susanta Kumar Bisoi , Diptiranjan Rout

Solar wind-magnetosphere coupling, its causes and consequences have been studied for the last several decades. However, the assessment of continuously changing behaviour of the sun, plasma and field flows in the interplanetary space and…

Solar and Stellar Astrophysics · Physics 2013-12-09 Badruddin , O. P. M. Aslam

We utilize solar rotation average geomagnetic index ap and various solar wind plasma and field parameters for four solar cycles 20-23. We perform analysis to search for a best possible coupling function at 27-day time resolution. Regression…

Solar and Stellar Astrophysics · Physics 2014-04-07 Badruddin , O. P. M. Aslam

We study the role of substorms and steady magnetospheric convection (SMC) in magnetic flux transport in the magnetosphere, using observations of field-aligned currents by the Active Magnetosphere and Planetary Electrodynamics Response…

Solar and Stellar Astrophysics · Physics 2021-07-26 S. E. Milan , M. -T. Walach , J. A. Carter , H. Sangha , B. J. Anderson

The terrestrial magnetopause is the boundary that shields the Earth's magnetosphere on one side from the shocked solar wind and its embedded interplanetary magnetic field on the other side. In this paper, we show observations from two of…

Space Physics · Physics 2020-12-18 S. Haaland , A. Runov , A. Artemyev , V. Angelopoulos

The coupling of Jupiter's magnetosphere and ionosphere plays a vital role in creating its auroral emissions. The strength of these emissions is dependent on the difference in speed of the rotational flows within Jupiter's high-latitude…

Earth and Planetary Astrophysics · Physics 2012-02-20 J. N. Yates , N. Achilleos , P. Guio

The aim of this paper is to study the plasma flows on the Mercury surface for different interplanetary magnetic field orientations on the day side of the planet. We use a single fluid MHD model in spherical coordinates to simulate the…

Earth and Planetary Astrophysics · Physics 2016-08-15 J. Varela , F. Pantellini , M. Moncuquet

Statistical analyses have shown that the sunward component of the interplanetary magnetic field, $\mathit{B}_{x}$ (Geocentric Solar Magnetospheric), moderately but significantly affects the auroral intensity. These observations have been…

Space Physics · Physics 2018-08-07 K. M. Laundal , J. P. Reistad , C. C. Finlay , N. Østgaard , P. Tenfjord , K. Snekvik , A. Ohma

Solar atmosphere is a single system unified by the presence of large-scale magnetic fields. Topological changes in magnetic fields that occur in one place may have consequences for coronal heating and eruptions for other, even remote…

Solar and Stellar Astrophysics · Physics 2013-02-05 Alexei A. Pevtsov

This publication provides an overview of magnetic fields in the solar atmosphere with the focus lying on the corona. The solar magnetic field couples the solar interior with the visible surface of the Sun and with its atmosphere. It is also…

Solar and Stellar Astrophysics · Physics 2015-06-23 Thomas Wiegelmann , Julia K. Thalmann , Sami K. Solanki

Magnetic quenching of turbulent thermal diffusivity leads to instability of the large-scale field with the production of spatially isolated regions of enhanced field. This conclusion follows from a linear stability analysis in the framework…

Solar and Stellar Astrophysics · Physics 2019-05-01 Leonid L. Kitchatinov

The interaction of the solar wind with the Earth's magnetic field produces geomagnetic activity, which is critically dependent on the orientation of the interplanetary magnetic field (IMF). Most solar wind coupling functions quantify this…

Earth and Planetary Astrophysics · Physics 2018-05-29 Lauri Holappa , Kalevi Mursula

The motion of a charged particle in a magnetic dipole has first been studied by Stormer. The different applications of Stormer's theory to aurorae, cosmic rays and Van Allen radiation belt particles are recalled in an historical…

Earth and Planetary Astrophysics · Physics 2012-07-24 Joseph F. Lemaire