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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…

Strong gravitational lensing of gravitational wave sources offers a novel probe of both the lens galaxy and the binary source population. In particular, the strong lensing event rate and the time delay distribution of multiply-imaged…

Cosmology and Nongalactic Astrophysics · Physics 2022-04-20 Fei Xu , Jose Maria Ezquiaga , Daniel E. Holz

Gravitational microlensing is currently the only technique that helps study the Galactic distribution of planets as a function of distance from the Galactic center. The Galactic location of a lens system can be uniquely determined only when…

Earth and Planetary Astrophysics · Physics 2021-09-08 Naoki Koshimoto , David P. Bennett , Daisuke Suzuki , Ian A. Bond

Massive objects located between Earth and a compact binary merger can act as a magnifying glass improving the sensitivity of gravitational wave detectors to distant events. Depending on the parameters of the system, a point mass lens…

General Relativity and Quantum Cosmology · Physics 2023-10-27 Ruxandra Bondarescu , Helena Ubach , Oleg Bulashenko , Andrew P. Lundgren

Gravitational microlensing provides a unique opportunity to probe the mass distribution of stars, black holes, and other objects in the Milky Way. Population simulations are necessary to interpret results from microlensing surveys. The…

Solar and Stellar Astrophysics · Physics 2025-01-08 Natasha S. Abrams , Jessica R. Lu , Casey Y. Lam , Michael S. Medford , Matthew W. Hosek, , Sam Rose

Microlensing is sensitive to binary, brown dwarf, and planetary companions to normal stars in the Galactic bulge with separations between about 1-10 AU. The accurate, densely-sampled photometry of microlensing events needed to detect…

Astrophysics · Physics 2007-05-23 B. Scott Gaudi

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

Gaudi & Gould (1997) showed that close companions of remote binary systems can be efficiently detected by using gravitational microlensing via the deviations in the lensing light curves induced by the existence of the lens companions. In…

Astrophysics · Physics 2009-11-06 Heon-Young Chang , Cheongho Han

An LSST-like survey of the Galactic plane (deep images every 3-4 days) could probe the Galactic distribution of planets by two distinct methods: gravitational microlensing of planets beyond the snow line and transits by planets very close…

Astrophysics of Galaxies · Physics 2013-04-15 Andrew Gould

The detection of three black hole binary coalescence events by Advanced LIGO allows the science benefits of future detectors to be evaluated. In this paper we report the science benefits of one or two 8km arm length detectors based on the…

High Energy Astrophysical Phenomena · Physics 2017-12-27 E. J. Howell , M. L. Chan , Q. Chu , D. H. Jones , I. S. Heng , H. -M. Lee , D. Blair , J. Degallaix , T. Regimbau , H. Miao , C. Zhao M. Hendry , D. Coward , C. Messenger , L. Ju , Z. -H. Zhu

Upcoming LSST survey gives an unprecedented opportunity for studying populations of intrinsically faint objects using microlensing technique. Large field of view and aperture allow effective time-series observations of many stars in…

Instrumentation and Methods for Astrophysics · Physics 2019-02-13 Sedighe Sajadian , Radoslaw Poleski

We explore a unique electromagnetic signature of stellar-mass compact-object binaries long before they are detectable in gravitational waves. We show that gravitational lensing of light emitting components of a compact-object binary, by the…

High Energy Astrophysical Phenomena · Physics 2020-03-11 Daniel J. D'Orazio , Rosanne Di Stefano

Over the past decade, microlensing has developed into a powerful tool to study stellar astrophysics, especially stellar atmospheres, stellar masses, and binarity. I review this progress. Stellar atmospheres can be probed whenever the source…

Astrophysics · Physics 2016-08-30 Andrew Gould

Gravitational microlensing depends primarily on the lens mass and presents a larger occurrence rate in crowded regions, which makes it the best tool to uncover the initial mass function (IMF) of low-mass stars in the Galactic bulge. The…

Hundreds of gravitational microlensing events have now been detected towards the Galactic bulge, with many more to come. The detection of fine structure in these events has been theorized to be an excellent way to discover extra-solar…

Astrophysics · Physics 2010-04-06 Kim Griest , Neda Safizadeh

Next-generation ground-based gravitational-wave (GW) detectors are expected to detect millions of binary black hole mergers during their operation period. A small fraction ($\sim 0.1 - 1\%$) of them will be strongly lensed by intervening…

Cosmology and Nongalactic Astrophysics · Physics 2024-08-13 Souvik Jana , Shasvath J. Kapadia , Tejaswi Venumadhav , Surhud More , Parameswaran Ajith

We present the analysis of the binary-lens microlensing event OGLE-2017-BLG-0537. The light curve of the event exhibits two strong caustic-crossing spikes among which the second caustic crossing was resolved by high-cadence surveys. It is…

Currently, 6 candidate binary lens events have been reported, while only a single candidate binary source event has been reported. To account for the rarity of binary source events, Dominik pointed out that for a typical binary source event…

Astrophysics · Physics 2009-10-30 Cheongho Han , Youngjin Jeong