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The capture of interstellar dust: the Lorentz force case by M Kocifaj; J Klačka is a Physics and Astronomy article available to read on EtoBox.
What is The capture of interstellar dust: the Lorentz force case about?
The capture of arbitrarily shaped interstellar dust in the Solar System is investigated. Electromagnetic radiation and gravitational forces of the Sun and Lorentz force generated by interplanetary magnetic ÿeld are considered. The capture conditions appear to be very sensitive to the particle shape. Non-spherical particles as well as their spherical equivalents are captured only when they are moving initially in the vicinity of ecliptic plane. Capture of non-charged non-spherical dust typically occurs in the region b ¡ 100 RSun, where RSun is solar radius and impact parameter b is deÿned as the smallest distance between the particle and the Sun if no forces existed. In contrast, charged particles are typically captured at b ¿ 150 RSun. The total amount of captured non-spherical sub-micron particles di ers signiÿcantly from the corresponding amount of spherical dust grains. However, both amounts are comparable in the micron-sized range. It is shown that a certain mass of captured non-spherical particles may survive in the Solar System, while captured spherical ones hit the Sun or sublimate in its vicinity. Only a negligible amount of spherical particles can survive. Consideration of
Who reads The capture of interstellar dust: the Lorentz force case?
It is typically read by researchers, students, and practitioners in Physics and Astronomy.
- Author
- M Kocifaj; J Klačka
- Publisher
- Elsevier Science; Elsevier ; Elsevier BV (ISSN 0032-0633)
- Published
- 2004
- Language
- EN
- Field
- Physics and Astronomy (Physical Sciences)