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19 April 2024

» arxiv » astro-ph/0111041

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Improving the Prospects for Detecting Extrasolar Planets in Gravitational Microlensing in 2002
I.A. Bond ; F. Abe ; R.J. Dodd ; J.B. Hearnshaw ; P.M. Kilmartin ; K. Masuda ; Y. Matsubara ; Y. Muraki ; S. Noda ; O.K.L. Petterson ; N.J. Rattenbury ; M. Reid ; To. Saito ; Y. Saito ; T. Sako ; J. Skuljan ; D.J. Sullivan ; T. Sumi ; S. Wilkinson ; R. Yamada ; T. Yanagisawa ; P.C.M. Yock ;
Date:	2 Nov 2001
Journal:	Mon.Not.Roy.Astron.Soc. 331 (2002) L19
Subject:	astro-ph
Abstract:	Gravitational microlensing events of high magnification have been shown to be promising targets for detecting extrasolar planets. However, only a few events of high magnification have been found using conventional survey techniques. Here we demonstrate that high magnification events can be readily found in microlensing surveys using a strategy that combines high frequency sampling of target fields with online difference imaging analysis. We present 10 microlensing events with peak magnifications greater than 40 that were detected in real-time towards the Galactic Bulge during 2001 by MOA. We show that Earth mass planets can be detected in future events such as these through intensive follow-up observations around the event peaks. We report this result with urgency as a similar number of such events are expected in 2002.
Source:	arXiv, astro-ph/0111041
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