2001/07/27 by Cheongho Han, Heon-Young Chang, Jin H. An +1 · 1 citation
Physics and Astronomy · #Astronomy and Astrophysical Research #Binary number #Event (particle physics) #Galaxies: Formation, Evolution, Phenomena #Gravitational microlensing #Light curve #Outer planets #Planet #Stellar, planetary, and galactic studies #Superposition principle #astro-ph
paper · pdf · doi:10.1046/j.1365-8711.2001.04973.x
published as Mon.Not.Roy.Astron.Soc. 328 (2001) 986 · total 13 pages, including 6 figures and no table, MNRAS, submitted, for better quality pdf file is avalilable at http://astroph.chungbuk.ac.kr/~cheongho/publication.html
arxiv created 2001/07/27 · openalex publication_date 2001/12/01 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
In this paper, we show that the pattern of microlensing light curve anomalies induced by multiple planets is well described by the superposition of those of the single-planet systems where the individual planet–primary binary pairs act as independent lens systems. As the outer deviation regions around the planetary caustics of the individual planets occur in general at different locations, we find that the pattern of anomalies in these regions is barely affected by the existence of other planet(s). This implies that even if an event is caused by a multiple planetary system, a simple single-planet lensing model is good enough for the description of most anomalies caused by the passage of the source through the outer deviation regions. Detection of the anomalies resulting from the source trajectory passing both the outer deviation regions caused by more than two planets will provide a new channel for detecting multiple planets.