| Issue |
A&A
Volume 464, Number 1, March II 2007
AMBER: Instrument description and first astrophysical results
|
|
|---|---|---|
| Page(s) | 127 - 134 | |
| Section | Astrophysical processes | |
| DOI | https://doi.org/10.1051/0004-6361:20066132 | |
| Published online | 19 December 2006 | |
Poynting-Robertson effect and perihelion motion
1
Department of Astronomy, Physics of the Earth, and Meteorology, Faculty of Mathematics, Physics and Informatics, Comenius University, Mlynská dolina, 842 48 Bratislava, Slovak Republic e-mail: [klacka;pavol.pastor]@fmph.uniba.sk
2
Astronomical Institute, Slovak Academy of Sciences, Dúbravská cesta 9, 845 04 Bratislava, Slovak Republic e-mail: astromir@savba.sk
Received:
28
July
2006
Accepted:
17
October
2006
The effect of stellar electromagnetic radiation on the motion of homogeneous spherical
dust particles, the Poynting-Robertson (P-R) effect, is investigated. The effect
already produces a shift of pericenter/perihelion in the accuracy to the first
order in 
, where 
is velocity of the particle with respect
to the source of radiation and c is the speed of light. The advancement of
pericenter occurs due to the fact that the P-R effect depends on radiation pressure
efficiency factor 
, which is a function of optical properties
of the particle. The particle orbiting a star moves in various distances from the
star and the particle optical properties may vary with the distance, as they
are functions of temperature.
Key words: scattering / solar system: general / interplanetary medium
© ESO, 2007
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