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We present the analysis of the planetary microlensing event OGLE-2014-BLG-1760, which shows a strong light curve signal due to the presence of a Jupiter mass-ratio planet. One unusual feature of this event is that the source star is quite…

We report the mass and distance measurements of two single-lens events from the 2017 Spitzer microlensing campaign. The ground-based observations yield the detection of finite-source effects, and the microlens parallaxes are derived from…

Solar and Stellar Astrophysics · Physics 2020-03-04 Weicheng Zang , Yossi Shvartzvald , Tianshu Wang , Andrzej Udalski , Chung-Uk Lee , Takahiro Sumi , Jesper Skottfelt , Shun-Sheng Li , Shude Mao , Wei Zhu , Jennifer C. Yee , Sebastiano Calchi Novati , Charles A. Beichman , Geoffery Bryden , Sean Carey , B. Scott Gaudi , Calen B. Henderson , Przemek Mróz , Jan Skowron , Radoslaw Poleski , Michał K. Szymański , Igor Soszyński , Paweł Pietrukowicz , Szymon Kozłowski , Krzysztof Ulaczyk , Krzysztof A. Rybicki , Patryk Iwanek , Etienne Bachelet , Grant Christie , Jonathan Green , Steve Hennerley , Dan Maoz , Tim Natusch , Richard W. Pogge , Rachel A. Street , Yiannis Tsapras , Michael D. Albrow , Sun-Ju Chung , Andrew Gould , Cheongho Han , Kyu-Ha Hwang , Youn Kil Jung , Yoon-Hyun Ryu , In-Gu Shin , Sang-Mok Cha , Dong-Jin Kim , Hyoun-Woo Kim , Seung-Lee Kim , Dong-Joo Lee , Yongseok Lee , Byeong-Gon Park , Richard W. Pogge , Ian A. Bond , Fumio be , Richard Barry , David P. Bennett , Aparna Bhattacharya , Martin Donachie , Akihiko Fukui , Yuki Hirao , Yoshitaka Itow , Iona Kondo , Naoki Koshimoto , Man Cheung Alex Li , Yutaka Matsubara , Yasushi Muraki , Shota Miyazaki , Masayuki Nagakane , Clément Ranc , Nicholas J. Rattenbury , Haruno Suematsu , Denis J. Sullivan , Daisuke Suzuki , Paul J. Tristram , Atsunori Yonehara , Martin Dominik , Markus Hundertmark , Uffe G. Jørgensen , Sohrab Rahvar , Sedighe Sajadian , Colin Snodgrass , Valerio Bozza , Martin J. Burgdorf , Daniel F. Evans , Roberto Figuera Jaimes , Yuri I. Fujii , Luigi Mancini , Penelope Longa-Peña , hristiane Helling , Nuno Peixinho , Markus Rabus , John Southworth , Eduardo Unda-Sanzana , Carolina von Essen

(abridged) Using the particularly long gravitational microlensing event OGLE-2014-BLG-1186 with a time-scale $t_\mathrm{E}$ ~ 300 d, we present a methodology for identifying the nature of localised deviations from single-lens point-source…

In this work, we present the analysis of the binary microlensing event OGLE-2018-BLG-0022 that is detected toward the Galactic bulge field. The dense and continuous coverage with the high-quality photometry data from ground-based…

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…

We report the discovery of a giant planet in the OGLE-2017-BLG-1522 microlensing event. The planetary perturbations were clearly identified by high-cadence survey experiments despite the relatively short event timescale of $t_{\rm E} \sim…

We present the analysis of the microlensing event OGLE-2016-BLG-1227. The light curve of this short-duration event appears to be a single-lens event affected by severe finite-source effects. Analysis of the light curve based on single-lens…

We present an analysis of the anomalous microlensing event, MOA-2010-BLG-073, announced by the Microlensing Observations in Astrophysics survey on 2010-03-18. This event was remarkable because the source was previously known to be…

Earth and Planetary Astrophysics · Physics 2015-06-12 R. A. Street , J. -Y. Choi , Y. Tsapras , C. Han , K. Furusawa , M. Hundertmark , A. Gould , T. Sumi , I. A. Bond , D. Wouters , R. Zellem , A. Udalski , C. Snodgrass , K. Horne , M. Dominik , P. Browne , N. Kains , D. M. Bramich , D. Bajek , I. A. Steele , S. Ipatov , F. Abe , D. P. Bennett , C. S. Botzler , P. Chote , M. Freeman , A. Fukui , P. Harris , Y. Itow , C. H. Ling , K. Masuda , Y. Matsubara , N. Miyake , Y. Muraki , T. Nagayama , S. Nishimaya , K. Ohnishi , N. Rattenbury , To. Saito , D. J. Sullivan , D. Suzuki , W. L. Sweatman , P. J. Tristram , K. Wada , P. C. M. Yock , M. K. Szymanski , M. Kubiak , G. Pietrzynski , I. Soszynski , R. Poleski , K. Ulaczyk , L. Wyrzykowski , J. Yee , S. Dong , I. -G. Shin , C. -U. Lee , J. Skowron , L. Andrade De Almeida , D. L. DePoy , B. S. Gaudi , L. -W. Hung , F. Jablonski , S. Kaspi , N. Klein , K. -H. Hwang , J. -R. Koo , D. Maoz , J. A. Munoz , R. W. Pogge , D. Polishhook , A. Shporer , J. McCormick , G. Christie , T. Natusch , B. Allen , J. Drummond , D. Moorhouse , G. Thornley , M. Knowler , M. Bos , G. Bolt , J. -P. Beaulieu , M. D. Albrow , V. Batista , S. Brillant , J. A. R. Caldwell , A. Cassan , A. Cole , E. Corrales , Ch. Coutures , S. Dieters , D. Dominis Prester , J. Donatowicz , P. Fouque , E. Bachelet , J. Greenhill , S. R. Kane , D. Kubas , J. -B. Marquette , R. Martin , J. Menzies , K. R. Pollard , K. C. Sahu , J. Wambsganss , A. Williams , M. Zub , K. A. Alsubai , V. Bozza , M. J. Burgdorf , S. Calchi Novati , P. Dodds , S. Dreizler , F. Finet , T. Gerner , S. Hardis , K. Harpsoe , F. Hessman , T. C. Hinse , U. G. Jorgensen , E. Kerins , C. Liebig , L. Mancini , M. Mathiasen , M. T. Penny , S. Proft , S. Rahvar , D. Ricci , G. Scarpetta , S. Schafer , F. Schonebeck , J. Southworth , J. Surdej

We analyze OGLE-2003-BLG-262, a relatively short, t_E=12.5+-0.1day, microlensing event generated by a point-mass lens transiting the face of a K giant source in the Galactic bulge. We use the resulting finite-source effects to measure the…

We report the discovery and the analysis of the planetary microlensing event, OGLE-2013-BLG-1761. There are some degenerate solutions in this event because the planetary anomaly is only sparsely sampled. But the detailed light curve…

We present the details of the Bayesian analysis on the planetary microlensing event MOA-2016-BLG-227, whose excess flux is likely due to a source/lens companion or an unrelated ambient star, as well as of the assumed prior distributions.…

Earth and Planetary Astrophysics · Physics 2020-05-27 Naoki Koshimoto , David P. Bennett , Daisuke Suzuki

We report the discovery and the analysis of the short (tE < 5 days) planetary microlensing event, OGLE-2015-BLG-1771. The event was discovered by the Optical Gravitational Lensing Experiment (OGLE), and the planetary anomaly (at I ~ 19) was…

We analyze the single microlensing event OGLE-2015-BLG-1482 simultaneously observed from two ground-based surveys and from \textit{Spitzer}. The \textit{Spitzer} data exhibit finite-source effects due to the passage of the lens close to or…

We report the discovery and analysis of a planet in the microlensing event OGLE-2018-BLG-0799. The planetary signal was observed by several ground-based telescopes, and the planet-host mass ratio is $q = (2.65 \pm 0.16) \times 10^{-3}$. The…

We present the analysis of the gravitational microlensing event OGLE-2013-BLG-0102. The light curve of the event is characterized by a strong short-term anomaly superposed on a smoothly varying lensing curve with a moderate magnification…

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