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Related papers: Analysis of Microlensing Light Curves Induced by M…

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One important strength of the microlensing method in detecting extrasolar planets is its high sensitivity to low-mass planets. However, it is often believed that microlensing detections of Earth-mass planets from ground-based observation…

Earth and Planetary Astrophysics · Physics 2015-06-19 Youn Kil Jung , Hyuk Park , Cheongho Han , Kyu-Ha Hwang , In-Gu Shin , Joon-Young Choi

Terrestrial planets may be detected using the gravitational microlensing technique. This was demonstrated in the high magnification event MACHO-98-BLG-35. Observing strategies aimed at measuring the abundance of terrestrial planets are…

Astrophysics · Physics 2007-05-23 Philip Yock

Microlensing of stars in strongly lensed galaxies can lead to temporary extreme magnification factors ($\mu\!>\!1000$), enabling their detection at high redshifts. Following the discovery of Icarus, several stars at cosmological distances…

Cosmology and Nongalactic Astrophysics · Physics 2024-07-03 J. M. Palencia , J. M. Diego , B. J. Kavanagh , J. Martinez

We classify various types of planetary lensing signals and the channels of detecting them. We estimate the relative frequencies of planet detections through the individual channels with special emphasis on the new channels to be…

Astrophysics · Physics 2009-11-13 Cheongho Han

Microlensing is one of the most promising methods of reconstructing the stellar mass function down to masses even below the hydrogen-burning limit. The fundamental limit to this technique is the presence of unresolved binaries, which can in…

Astrophysics · Physics 2009-10-28 B. Scott Gaudi , Andrew Gould

A common remark at conferences and meetings has been: "One can fit any light curve with binary lens models because of the large number of parameters!" It is especially tempting to claim that some of the possible binary events in the…

Astrophysics · Physics 2009-10-28 Ann B. Saust

The light curve of the microlensing event KMT-2021-BLG-0240 exhibits a short-lasting anomaly with complex features near the peak at the 0.1~mag level from a single-lens single-source model. We conducted modeling of the lensing light curve…

The successful prediction of lensing events is a new and exciting enterprise that provides opportunities to discover and study planetary systems. The companion paper investigates the underlying theory. This paper is devoted to outlining the…

Earth and Planetary Astrophysics · Physics 2012-02-27 Rosanne Di Stefano , James Matthews , Sebastien Lepine

Of all planet-finding techniques, microlensing is potentially the most sensitive to Earth-mass planets. However, microlensing lightcurves generically yield only the planet-star mass ratio: the mass itself is uncertain to a factor of a few.…

Astrophysics · Physics 2009-11-07 Andrew Gould , B. Scott Gaudi , Cheongho Han

A measurement by microlensing of the planetary mass function of planets with masses ranging from 5M_E to 10M_J and orbital radii from 0.5 to 10 AU was reported recently. A strategy for extending the mass range down to (1-3)M_E is proposed…

Gravitational microlensing is a unique method for discovering cold planets across a broad mass range. Reliable statistics of the microlensing planets require accurate sensitivity estimates. However, the impact of the degeneracies in…

Earth and Planetary Astrophysics · Physics 2025-11-24 Yuxin Shang , Hongjing Yang , Jiyuan Zhang , Shude Mao , Andrew Gould , Weicheng Zang , Qiyue Qian , Jennifer C. Yee

Microlensing events are being discovered and alerted by the two survey teams OGLE and MOA at an increasing rate. Around ten percent of these events involve binary lenses. Such events potentially contain much information on the physical…

Astrophysics · Physics 2009-11-13 A. Cassan

The fields of occultation and microlensing are linked historically. Early this century, occultation of the Sun by the Moon allowed the apparent positions of background stars projected near the limb of the Sun to be measured and compared…

Astrophysics · Physics 2007-05-23 Penny D. Sackett

The {\it Kepler} mission has detected thousands of planetary systems with 1-7 transiting planets packed within 0.7~au from their host stars. There is an apparent excess of single-transit planet systems that cannot be explained by transit…

Earth and Planetary Astrophysics · Physics 2017-01-11 Dong Lai , Bonan Pu

The microlens parallax is a crucial observable for conclusively identifying the nature of lens systems in microlensing events containing or composed of faint (even dark) astronomical objects such as planets, neutron stars, brown dwarfs, and…

In this work, we study the advantages of using a Lucky Imaging camera for the observations of potential planetary microlensing events. Our aim is to reduce the blending effect and enhance exoplanet signals in binary lensing systems composed…

Instrumentation and Methods for Astrophysics · Physics 2016-03-23 Sedighe Sajadian , Sohrab Rahvar , Martin Dominik , Markus Hundertmark

Even though the recently discovered high-magnification event MOA-2010-BLG-311 had complete coverage over the peak, confident planet detection did not happen due to extremely weak central perturbations (fractional deviations of $\lesssim…

Earth and Planetary Astrophysics · Physics 2015-06-19 Sun-Ju Chung , Chung-Uk Lee , Jae-Rim Koo

The frequency of planets in binaries is an important issue in the field of extrasolar planet studies, because of its relevance in estimating of the global planet population of our Galaxy and the clues it can give to our understanding of…

Astrophysics · Physics 2009-11-13 M. Bonavita , S. Desidera

Microlensing is the only technique likely, within the next 5 years, to constrain the frequency of Jupiter-analogs. The PLANET collaboration has monitored nearly 100 microlensing events of which more than 20 have sensitivity to the…