Abstract
The interaction between comet Hale-Bopp tail with the solar wind is investigated in the present paper using magneto-hydrodynamic (MHD) numerical simulation, which accounts for the presence of the interplanetary magnetic field (IMF). The simulation is based on three-dimensional Lax-Wendroff explicit scheme, providing second-order accuracy in space and time. The ions produced from the nucleus of the comet will add considerable effects on the microstructure of the solar wind, thus severely altering its physical properties. The present simulation focuses on careful analysis of these properties by means of simulating the behavior of the comet Hale-Bopp’s tail at 1 AU from the sun. These properties include the changes of the plasma density, particle velocity, IMF changes, pressure, and internal energy. The results indicated that comet tail will highly disturb the physical properties of the solar wind for a considerable distance. These changes reflect the effect of including the source term in the present simulation. It is shown that the comet tail will retain its original shape faster as it approaches the sun. Practical comparisons are also presented in the present research with earlier work. The present simulation was made using MATLAB program.
Highlights
IntroductionThe so called “dirty-ice model” is based on the assumption that the comet nucleus is composed from water ice contaminated by various impurities
The structure of the cometary nucleus is thought to compose from ice mainly [1]
The interaction between comet Hale-Bopp tail with the plasma of the solar wind was sided by means of MHD numerical simulation
Summary
The so called “dirty-ice model” is based on the assumption that the comet nucleus is composed from water ice contaminated by various impurities This unique structure of the comet nucleus makes it possible to generate the cometary tail and provides important tool for studying the solar wind properties. The focus will be on the solar wind properties changes, namely, particle number and density, their velocity, the turbulence in the IMF, and the magnetic pressure caused by this interaction, the total pressure changes due to comet presence and the internal energy of solar wind particles These effects are studied according to the position of the comet from the sun.
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