Related papers: Galactic microlensing with rotating binaries

Stellar wobble in triple star systems

The radial velocity method for detecting extra-solar planets relies on measuring the star's wobble around the system's center of mass. Since this is an indirect method, we may ask if there are other dynamical effects that can mimic such…

Earth and Planetary Astrophysics · Physics 2012-03-29 M. H. M. Morais , A. C. M. Correia

Distinguishing between Planetary and Binary Interpretations of Microlensing Central Perturbations under Severe Finite-Source Effect

In the current strategy of microlensing planet searches focusing on high-magnification events, wide and close binaries pose important sources of contamination that imitates planetary signals. For the purpose of finding systematic…

Astrophysics · Physics 2009-11-13 Cheongho Han

Limits of Binaries That Can Be Characterized by Gravitational Microlensing

Due to the high efficiency of planet detections, current microlensing planet searches focus on high-magnification events. High-magnification events are sensitive to remote binary companions as well and thus a sample of wide-separation…

Astrophysics · Physics 2009-11-13 Doeon Kim , Yoon-Hyun Ryu , Byeong-Gon Park , Heon-Young Chang , Kyu-Ha Hwang , Sun-Ju Chung , Chung-Uk Lee , Cheongho Han

Gravitational Microlensing I: A Unique Astrophysical Tool

In this article we review the astrophysical application of gravitational microlensing. After introducing the history of gravitational lensing, we present the key equations and concept of microlensing. The most frequent microlensing events…

Instrumentation and Methods for Astrophysics · Physics 2016-03-21 Sohrab Rahvar

KMT-2021-BLG-0322: Severe degeneracy between triple-lens and higher-order binary-lens interpretations

We investigate the microlensing event KMT-2021-BLG-0322, for which the light curve exhibits three distinctive sets of caustic-crossing features. It is found that the overall features of the light curve are approximately described by a…

Earth and Planetary Astrophysics · Physics 2021-11-17 Cheongho Han , Andrew Gould , Yuki Hirao , Chung-Uk Lee , Michael D. Albrow , Sun-Ju Chung , Kyu-Ha Hwang , Youn Kil Jung , Doeon Kim , Shude Mao , Yoon-Hyun Ryu , In-Gu Shin , Yossi Shvartzvald , Jennifer C. Yee , Weicheng Zang , Sang-Mok Cha , Dong-Jin Kim , Hyoun-Woo Kim , Seung-Lee Kim , Dong-Joo Lee , Yongseok Lee , Byeong-Gon Park , Richard W. Pogge , Fumio Abe , Richard Barry , David P. Bennett , Aparna Bhattacharya , Ian Bond , Martin Donachie , Hirosane Fujii , Akihiko Fukui , Yoshitaka Itow , Rintaro Kirikawa , Iona Kondo , Naoki Koshimoto , Man Cheung Alex Li , Yutaka Matsubara , Yasushi Muraki , Shota Miyazaki , Clément Ranc , Nicholas J. Rattenbury , Yuki Satoh , Hikaru Shoji , Takahiro Sumi , Daisuke Suzuki , Yuzuru Tanaka , Paul J. Tristram , Tsubasa Yamawaki , Atsunori Yonehara

Disks and Planets in Binary Systems

The star formation process in molecular clouds usually leads to the formation of multiple stellar systems, mostly binaries. Remaining disks around those stars may be located around individual stars (circumstellar disks) or around the entire…

Astrophysics · Physics 2007-05-23 Wilhelm Kley , Andreas Burkert

A New Type of Ambiguity in the Planet and Binary Interpretations of Central Perturbations of High-Magnification Gravitational Microlensing Events

High-magnification microlensing events provide an important channel to detect planets. Perturbations near the peak of a high-magnification event can be produced either by a planet or a binary companion. It is known that central…

Earth and Planetary Astrophysics · Physics 2015-06-04 J. -Y. Choi , I. -G. Shin , C. Han , A. Udalski , T. Sumi , A. Gould , V. Bozza , M. Dominik , P. Fouqué , K. Horne , M. K. Szymański , M. Kubiak , I. Soszyński , G. Pietrzyński , R. Poleski , K. Ulaczyk , P. Pietrukowicz , S. Kozłowski , J. Skowron , Ł. Wyrzykowski , F. Abe , D. P. Bennett , I. A. Bond , C. S. Botzler , P. Chote , M. Freeman , A. Fukui , K. Furusawa , Y. Itow , S. Kobara , C. H. Ling , K. Masuda , Y. Matsubara , N. Miyake , Y. Muraki , K. Ohmori , K. Ohnishi , N. J. Rattenbury , To. Saito , D. J. Sullivan , D. Suzuki , K. Suzuki , W. L. Sweatman , S. Takino , P. J. Tristram , K. Wada , P. C. M. Yock , D. M. Bramich , C. Snodgrass , I. A. Steele , R. A. Street , Y. Tsapras , K. A. Alsubai , P. Browne , M. J. Burgdorf , S. Calchi Novati , P. Dodds , S. Dreizler , X. -S. Fang , F. Grundahl , C. -H. Gu , S. Hardis , K. Harpsøe , T. C. Hinse , A. Hornstrup , M. Hundertmark , J. Jessen-Hansen , U. G. Jørgensen , N. Kains , E. Kerins , C. Liebig , M. Lund , M. Lunkkvist , L. Mancini , M. Mathiasen , M. T. Penny , S. Rahvar , D. Ricci , G. Scarpetta , J. Skottfelt , J. Southworth , J. Surdej , J. Tregloan-Reed , J. Wambsganss , O. Wertz , L. A. Almeida , V. Batista , G. Christie , D. L. DePoy , Subo Dong , B. S. Gaudi , C. Henderson , F. Jablonski , C. -U. Lee , J. McCormick , D. McGregor , D. Moorhouse , T. Natusch , H. Ngan , S. -Y. Park , R. W. Pogge , T. -G. Tan , G. Thornley , J. C. Yee , M. D. Albrow , E. Bachelet , J. -P. Beaulieu , S. Brillant , A. Cassan , A. A. Cole , E. Corrales , C. Coutures , S. Dieters , D. Dominis Prester , J. Donatowicz , J. Greenhill , D. Kubas , J. -B. Marquette , J. W. Menzies , K. C. Sahu , M. Zub

First assessment of the binary lens OGLE-2015_BLG-0232

We present an analysis of the microlensing event OGLE-2015-BLG-0232. This event is challenging to characterize for two reasons. First, the light curve is not well sampled during the caustic crossing due to the proximity of the full Moon…

Earth and Planetary Astrophysics · Physics 2019-01-09 E. Bachelet , V. Bozza , C. Han , A. Udalski , I. A. Bond , J. -P. Beaulieu , R. A. Street , J. -I Kim , D. M. Bramich , A. Cassan , M. Dominik , R. Figuera Jaimes , K. Horne , M. Hundertmark , S. Mao , J. Menzies , C. Ranc , R. Schmidt , C. Snodgrass , I. A. Steele , Y. Tsapras , J. Wambsganss , P. Mróz , I. Soszyński , M. K. Szymański , J. Skowron , P. Pietrukowicz , S. Kozłowski , R. Poleski , K. Ulaczyk , M. Pawlak , F. Abe , R. Barry , D. P. Bennett , A. Bhattacharya , M. Donachie , A. Fukui , Y. Hirao , Y. Itow , K. Kawasaki , I. Kondo , N. Koshimoto , M. Cheung Alex Li , Y. Matsubara , Y. Muraki , S. Miyazaki , M. Nagakane , N. J. Rattenbury , H. Suematsu , D. J. Sullivan , T. Sumi , D. Suzuki , P. J. Tristram , A. Yonehara

Blending of Light in Gravitational Microlensing Events

When there is more than one source of light along the line of sight to a gravitationally lensed object, the characteristics of the observed light curve are influenced by the presence of the light that is not lensed. In this paper we develop…

Astrophysics · Physics 2009-10-28 R. DiStefano , A. A. Esin

MACHO COLLABORATION SEARCH FOR BARYONIC DARK MATTER VIA GRAVITATIONAL MICROLENSING

Results are presented from the MACHO collaboration gravitational microlensing search. The experiment and the nearly 50 microlensing events that have been detected are described. Limits on the baryonic content of the halo are given, as are…

Astrophysics · Physics 2007-05-23 K. Griest , C. Alcock , R. A. Allsman , T. S. Axelrod , D. P. Bennett , K. H. Cook , K. C. Freeman , J. Guern , M. Lehner , S. L. Marshall , S. Perlmutter , B. A. Peterson , M. R. Pratt , P. J. Quinn , A. W. Rodgers , C. W. Stubbs , W. Sutherland , D. Welch

Compact Binaries through a Lens: Silent vs. Detectable Microlensing for the LIGO-Virgo-KAGRA Gravitational Wave Observatories

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

OGLE-2016-BLG-0613LABb: A Microlensing Planet in a Binary System

We present the analysis of OGLE-2016-BLG-0613, for which the lensing light curve appears to be that of a typical binary-lens event with two caustic spikes but with a discontinuous feature on the trough between the spikes. We find that the…

Earth and Planetary Astrophysics · Physics 2017-11-29 C. Han , A. Udalski , A. Gould , C. -U. Lee , Y. Shvartzvald , W. C. Zang , S. Mao , S. Kozłowski , M. D. Albrow , S. -J. Chung , K. -H. Hwang , Y. K. Jung , D. Kim , H. -W. Kim , Y. -H. Ryu , I. -G. Shin , J. C. Yee , W. Zhu , S. -M. Cha , S. -L. Kim , D. -J. Kim , Y. Lee , B. -G. Park , J. Skowron , P. Mróz , P. Pietrukowicz , R. Poleski , M. K. Szymański , I. Soszyński , K. Ulaczyk , M. Pawlak C. Beichman , G. Bryden , S. Calchi Novati , B. S. Gaudi , C. B. Henderson , S. B. Howell , S. Jacklin , M. T. Penny , P. Fouqué , T. S. Wang

OGLE-2015-BLG-0479LA,B: Binary Gravitational Microlens Characterized by Simultaneous Ground-based and Space-based Observation

We present a combined analysis of the observations of the gravitational microlensing event OGLE-2015-BLG-0479 taken both from the ground and by the {\it Spitzer Space Telescope}. The light curves seen from the ground and from space exhibit…

Solar and Stellar Astrophysics · Physics 2016-09-07 C. Han , A. Udalski , A. Gould , Wei Zhu , R. A. Street , J. C. Yee , C. Beichman , C. Bryden , S. Calchi Novati , S. Carey , M. Fausnaugh , B. S. Gaudi , Calen B. Henderson , Y. Shvartzvald , B. Wibking , M. K. Szymański , I. Soszyński , J. Skowron , P. Mróz , R. Poleski , P. Pietrukowicz , S. Kozłowski , K. Ulaczyk , Ł. Wyrzykowski , M. Pawlak , Y. Tsapras , M. Hundertmark , E. Bachelet , M. Dominik , D. M. Bramich , A. Cassan , R. Figuera Jaimes , K. Horne , C. Ranc , R. Schmidt , C. Snodgrass , J. Wambsganss , I. A. Steele , J. Menzies , S. Mao , V. Bozza , U. G. Jørgensen , K. A. Alsubai , S. Ciceri , G. D'Ago , T. Haugbølle , F. V. Hessman , T. C. Hinse , D. Juncher , H. Korhonen , L. Mancini , A. Popovas , M. Rabus , S. Rahvar , G. Scarpetta , J. Skottfelt , J. Southworth , D. Starkey , J. Surdej , O. Wertz , M. Zarucki , R. W. Pogge , D. L. DePoy

Microlensing of Quasars

There are two possible causes of variability in gravitationally lensed quasars: intrinsic fluctuations of the quasar and ``microlensing'' by compact objects along the line of sight. If disentangled from each other, microlens-induced…

Astrophysics · Physics 2009-10-31 Joachim Wambsganss

Cosmological Microlensing

Variability in gravitationally lensed quasars can be due to intrinsic fluctuations of the quasar or due to ``microlensing'' by compact objects along the line of sight. If disentangled from each other, microlens-induced variability can be…

Astrophysics · Physics 2007-05-23 Joachim Wambsganss

Combined Analysis of the Binary-Lens Caustic-Crossing Event MACHO 98-SMC-1

We fit the data for the binary-lens microlensing event MACHO 98-SMC-1 from 5 different microlensing collaborations and find two distinct solutions characterized by binary separation d and mass ratio q: (d,q)=(0.54,0.50) and…

Astrophysics · Physics 2009-10-31 C. Afonso , C. Alcock , S. H. Rhie , A. Udalski et al. , M. Albrow et al.

OGLE-2017-BLG-1038: A Possible Brown-dwarf Binary Revealed by Spitzer Microlensing Parallax

We report the analysis of microlensing event OGLE-2017-BLG-1038, observed by the Optical Gravitational Lensing Experiment, Korean Microlensing Telescope Network, and Spitzer telescopes. The event is caused by a giant source star in the…

Solar and Stellar Astrophysics · Physics 2023-02-16 Amber Malpas , Michael D. Albrow , Jennifer C. Yee , Andrew Gould , Andrzej Udalski , Antonio Herrera Martin , Spitzer Team , : , Charles A. Beichman , Geoffery Bryden , Sebastiano Calchi Novati , Sean Carey , Calen B. Henderson , B. Scott Gaudi , Yossi Shvartzvald , Wei Zhu , KMTNet Collaboration , : , Sang-Mok Cha , Sun-Ju Chung , Cheongho Han , Kyu-Ha Hwang , Youn Kil Jung , Dong-Jin Kim , Hyoun-Woo Kim , Seung-Lee Kim , Chung-Uk Lee , Dong-Joo Lee , Yongseok Lee , Byeong-Gon Park , Richard W. Pogge , Yoon-Hyun Ryu , In-Gu Shin , Weicheng Zang , OGLE Collaboration , : , Patryk Iwanek , Szymon Kozlowski , Przemek Mróz , Pawel Pietrukowicz , Radoslaw Poleski , Krzysztof A. Rybicki , Jan Skowron , Igor Soszyński , Michal K. Szymański , Krzysztof Ulaczyk

Full orbital solution for the binary system in the northern Galactic disc microlensing event Gaia16aye

Gaia16aye was a binary microlensing event discovered in the direction towards the northern Galactic disc and was one of the first microlensing events detected and alerted to by the Gaia space mission. Its light curve exhibited five distinct…

Solar and Stellar Astrophysics · Physics 2020-01-22 Łukasz Wyrzykowski , P. Mróz , K. A. Rybicki , M. Gromadzki , Z. Kołaczkowski , M. Zieliński , P. Zieliński , N. Britavskiy , A. Gomboc , K. Sokolovsky , S. T. Hodgkin , L. Abe , G. F. Aldi , A. AlMannaei , G. Altavilla , A. Al Qasim , G. C. Anupama , S. Awiphan , E. Bachelet , V. Bakıs , S. Baker , S. Bartlett , P. Bendjoya , K. Benson , I. F. Bikmaev , G. Birenbaum , N. Blagorodnova , S. Blanco-Cuaresma , S. Boeva , A. Z. Bonanos , V. Bozza , D. M. Bramich , I. Bruni , R. A. Burenin , U. Burgaz , T. Butterley , H. E. Caines , D. B. Caton , S. Calchi Novati , J. M. Carrasco , A. Cassan , V. Cepas , M. Cropper , M. Chruślińska , G. Clementini , A. Clerici , D. Conti , M. Conti , S. Cross , F. Cusano , G. Damljanovic , A. Dapergolas , G. D'Ago , J. H. J. de Bruijne , M. Dennefeld , V. S. Dhillon , M. Dominik , J. Dziedzic , O. Ereceantalya , M. V. Eselevich , H. Esenoglu , L. Eyer , R. Figuera Jaimes , S. J. Fossey , A. I. Galeev , S. A. Grebenev , A. C. Gupta , A. G. Gutaev , N. Hallakoun , A. Hamanowicz , C. Han , B. Handzlik , J. B. Haislip , L. Hanlon , L. K. Hardy , D. L. Harrison , H. J. van Heerden , V. L. Hoette , K. Horne , R. Hudec , M. Hundertmark , N. Ihanec , E. N. Irtuganov , R. Itoh , P. Iwanek , M. D. Jovanovic , R. Janulis , M. Jelínek , E. Jensen , Z. Kaczmarek , D. Katz , I. M. Khamitov , Y. Kilic , J. Klencki , U. Kolb , G. Kopacki , V. V. Kouprianov , K. Kruszyńska , S. Kurowski , G. Latev , C-H. Lee , S. Leonini , G. Leto , F. Lewis , Z. Li , A. Liakos , S. P. Littlefair , J. Lu , C. J. Manser , S. Mao , D. Maoz , A. Martin-Carrillo , J. P. Marais , M. Maskoliūnas , J. R. Maund , P. J. Meintjes , S. S. Melnikov , K. Ment , P. Mikołajczyk , M. Morrell , N. Mowlavi , D. Moździerski , D. Murphy , S. Nazarov , H. Netzel , R. Nesci , C. -C. Ngeow , A. J. Norton , E. O. Ofek , E. Pakstienė , L. Palaversa , A. Pandey , E. Paraskeva , M. Pawlak , M. T. Penny , B. E. Penprase , A. Piascik , J. L. Prieto , J. K. T. Qvam , C. Ranc , A. Rebassa-Mansergas , D. E. Reichart , P. Reig , L. Rhodes , J. -P. Rivet , G. Rixon , D. Roberts , P. Rosi , D. M. Russell , R. Zanmar Sanchez , G. Scarpetta , G. Seabroke , B. J. Shappee , R. Schmidt , Y. Shvartzvald , M. Sitek , J. Skowron , M. Śniegowska , C. Snodgrass , P. S. Soares , B. van Soelen , Z. T. Spetsieri , A. Stankeviciūtė , I. A. Steele , R. A. Street , J. Strobl , E. Strubble , H. Szegedi , L. M. Tinjaca Ramirez , L. Tomasella , Y. Tsapras , D. Vernet , S. Villanueva , O. Vince , J. Wambsganss , I. P. van der Westhuizen , K. Wiersema , D. Wium , R. W. Wilson , A. Yoldas , R. Ya. Zhuchkov , D. G. Zhukov , J. Zdanavicius , S. Zoła , A. Zubareva

Gravitational microlensing and dark matter problem in our Galaxy: 10 years later

Foundations of standard theory of microlensing are described, namely we consider microlensing stars in Galactic bulge, the Magellanic Clouds or other nearby galaxies. We suppose that gravitational microlenses lie between an Earth observer…

Astrophysics · Physics 2017-08-23 Alexander F. Zakharov

The Anomaly in the Candidate Microlensing Event PA-99-N2

The lightcurve of PA-99-N2, one of the recently announced microlensing candidates towards M31, shows small deviations from the standard Paczynski form. We explore a number of possible explanations, including correlations with the seeing,…

Astrophysics · Physics 2012-08-27 AGAPE Collaboration , J. H. An , N. W. Evans , E. Kerins , P. Baillon , S. Calchi-Novati , B. J. Carr , M. Creze , Y. Giraud-Heraud , A. Gould , P. Hewett , P. Jetzer , J. Kaplan , S. Paulin-Henriksson , S. J. Smartt , Y. Tsapras , D. Valls-Gabaud