Effects of dispersion of the dust velocity in the LISM on the interstellar dust distribution inside the heliosphere

Interstellar dust (ISD) penetrates into the heliosphere due to the relative motion of the Sun and the local interstellar medium (LISM). Inside the heliosphere and at the boundaries, where solar wind interacts with the LISM, distribution of ISD is modified due to the action of the electromagnetic for...

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Bibliographic Details
Published in:arXiv.org 2021-02
Main Authors: Godenko, E A, Izmodenov, V V
Format: Article
Language:English
Subjects:
Cosmic dust
Current sheets
Density distribution
Electromagnetic forces
Heliosphere
Interstellar matter
Local interstellar medium
Magnetism
Radiation pressure
Singularities
Solar gravitation
Solar wind
Stress concentration
Velocity distribution
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Summary:Interstellar dust (ISD) penetrates into the heliosphere due to the relative motion of the Sun and the local interstellar medium (LISM). Inside the heliosphere and at the boundaries, where solar wind interacts with the LISM, distribution of ISD is modified due to the action of the electromagnetic forces, the solar gravitation and the radiation pressure. These forces make the distribution of the ISD particles in the heliosphere inhomogeneous. In previous work we demonstrated the existence of singularities in the ISD density distribution at 0.03 - 10 a.u. north and south with respect to the heliospheric current sheet. In this paper we show that dispersion in the ISD velocity distribution strongly affects the singularities. Even small values of dispersion have the drastic impact on the density distribution and smooth the high density layers discovered previously.
ISSN:2331-8422
DOI:10.48550/arxiv.2102.13421