Astronomy and Astrophysics – Astrophysics
Scientific paper
2008-01-17
Astronomy and Astrophysics
Astrophysics
ApJ in press, 12 pages including 2 figures. Update takes account of important work by Pejcha & Heyrovsky
Scientific paper
10.1086/588601
The frequency of microlensing planet detections, particularly in difficult-to-model high-magnification events, is increasing. Their analysis can require tens of thousands of processor hours or more, primarily because of the high density and high precision of measurements whose modeling requires time-consuming finite-source calculations. I show that a large fraction of these measurements, those that lie at least one source diameter from a caustic or the extension from a cusp, can be modeled using a very simple hexadecapole approximation, which is one to several orders of magnitude faster than full-fledged finite-source calculations. Moreover, by restricting the regions that actually require finite-source calculations to a few isolated `caustic features', the hexadecapole approximation will, for the first time, permit the powerful `magnification-map' approach to be applied to events for which the planet's orbital motion is important.
No associations
LandOfFree
Hexadecapole Approximation in Planetary Microlensing does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Hexadecapole Approximation in Planetary Microlensing, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hexadecapole Approximation in Planetary Microlensing will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-392316