Realistic gravitational focusing of meteoroid streams

Autor:	Moorhead, Althea V., Clements, Tiffany D., Vida, Denis
Rok vydání:	2020
Předmět:	Astrophysics - Earth and Planetary Astrophysics
Druh dokumentu:	Working Paper
DOI:	10.1093/mnras/staa719
Popis:	The number density and flux of a meteoroid stream is enhanced near a massive body due to the phenomenon known as gravitational focusing. The greatest enhancement occurs directly opposite the massive body from the stream radiant: as an observer approaches this location, the degree of focusing is unbound for a perfectly collimated stream. However, real meteoroid streams exhibit some dispersion in radiant and speed that will act to eliminate this singularity. In this paper, we derive an analytic approximation for this smoothing that can be used in meteoroid environment models and is based on real measurements of meteor shower radiant dispersion. Comment: Accepted for publication by Monthly Notices of the Royal Astronomical Society
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2003.05458 Zobrazit plný text záznamu View this record from Arxiv