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19992024
most citedReal-Time Difference Imaging Analysis of MOA Galactic Bulge Observations During 2000

527 citations · 5.5k across the 146 of their papers we have counts for

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97 papers · 1 filter

astro-ph.EP2024★ 2 cited

OGLE-2015-BLG-1609Lb: Sub-jovian planet orbiting a low-mass stellar or brown dwarf host

M. J. Mróz, R. Poleski, A. Udalski +70

We present a comprehensive analysis of a planetary microlensing event OGLE-2015-BLG-1609. The planetary anomaly was detected by two survey telescopes, OGLE and MOA. Each of these s…

astro-ph.EP2024

Four microlensing giant planets detected through signals produced by minor-image perturbations

Cheongho Han, Ian A. Bond, Chung-Uk Lee +63

We investigated the nature of the anomalies appearing in four microlensing events KMT-2020-BLG-0757, KMT-2022-BLG-0732, KMT-2022-BLG-1787, and KMT-2022-BLG-1852. The light curves o…

astro-ph.EP2024

KMT-2023-BLG-1866Lb: Microlensing super-Earth around an M dwarf host

Cheongho Han, Ian A. Bond, Andrzej Udalski +64

We investigate the nature of the short-term anomaly that appears in the lensing light curve of KMT-2023-BLG-1866. The anomaly was only partly covered due to its short duration, les…

astro-ph.EP2024

MOA-2022-BLG-563Lb, KMT-2023-BLG-0469Lb, and KMT-2023-BLG-0735Lb: Three sub-Jovian-mass microlensing planets

Cheongho Han, Youn Kil Jung, Ian A. Bond +45

We analyze the anomalies appearing in the light curves of the three microlensing events MOA-2022-BLG-563, KMT-2023-BLG-0469, and KMT-2023-BLG-0735. The anomalies exhibit common sho…

astro-ph.EP2024

Systematic KMTNet Planetary Anomaly Search. XI. Complete Sample of 2016 Sub-Prime Field Planets

In-Gu Shin, Jennifer C. Yee, Weicheng Zang +63

Following Shin et al. (2023b), which is a part of the Systematic KMTNet Planetary Anomaly Search series (i.e., a search for planets in the 2016 KMTNet prime fields), we conduct a s…

astro-ph.EP2023

KMT-2023-BLG-1431Lb: A New Microlensing Planet from a Subtle Signature

Aislyn Bell, Jiyuan Zhang, Youn Kil Jung +70

The current studies of microlensing planets are limited by small number statistics. Follow-up observations of high-magnification microlensing events can efficiently form a statisti…

astro-ph.EP2023★ 47 cited

Systematic Reanalysis of KMTNet microlensing events, Paper I: Updates of the Photometry Pipeline and a New Planet Candidate

Hongjing Yang, Jennifer C. Yee, Kyu-Ha Hwang +52

In this work, we update and develop algorithms for KMTNet tender-love care (TLC) photometry in order to create an new, mostly automated, TLC pipeline. We then start a project to sy…

astro-ph.EP2023

OGLE-2014-BLG-0221Lb: A Jupiter Mass Ratio Companion Orbiting either a Late-Type Star or a Stellar Remnant

Rintaro Kirikawa, Takahiro Sumi, David P. Bennett +33

We present the analysis of microlensing event OGLE-2014-BLG-0221, a planetary candidate event discovered in 2014. The photometric light curve is best described by a binary-lens sin…

astro-ph.EP2023

KMT-2021-BLG-1547Lb: Giant microlensing planet detected through a signal deformed by source binarity

Cheongho Han, Weicheng Zang, Youn Kil Jung +52

We investigate the previous microlensing data collected by the KMTNet survey in search of anomalous events for which no precise interpretations of the anomalies have been suggested…

astro-ph.EP2023

OGLE-2019-BLG-0825: Constraints on the Source System and Effect on Binary-lens Parameters arising from a Five Day Xallarap Effect in a Candidate Planetary Microlensing Event

Yuki K. Satoh, Naoki Koshimoto, David P. Bennett +86

We present an analysis of microlensing event OGLE-2019-BLG-0825. This event was identified as a planetary candidate by preliminary modeling. We find that significant residuals from…

astro-ph.EP2023

KMT-2022-BLG-0475Lb and KMT-2022-BLG-1480Lb: Microlensing ice giants detected via non-caustic-crossing channel

Cheongho Han, Chung-Uk Lee, Ian A. Bond +49

We investigate the microlensing data collected in the 2022 season from the high-cadence microlensing surveys in order to find weak signals produced by planetary companions to lense…

astro-ph.EP2023★ 1 cited

KMT-2021-BLG-1150Lb: Microlensing planet detected through a densely covered planetary-caustic signal

Cheongho Han, Youn Kil Jung, Ian A. Bond +49

Recently, there have been reports of various types of degeneracies in the interpretation of planetary signals induced by planetary caustics. In this work, we check whether such deg…

astro-ph.EP2023★ 4 cited

MOA-2022-BLG-249Lb: Nearby microlensing super-Earth planet detected from high-cadence surveys

Cheongho Han, Andrew Gould, Youn Kil Jung +51

We investigate the data collected by the high-cadence microlensing surveys during the 2022 season in search for planetary signals appearing in the light curves of microlensing even…

astro-ph.EP2023

Systematic KMTNet Planetary Anomaly Search. IX. Complete Sample of 2016 Prime-Field Planets

In-Gu Shin, Jennifer C. Yee, Weicheng Zang +58

As a part of the ``Systematic KMTNet Planetary Anomaly Search" series, we report five new planets (namely, OGLE-2016-BLG-1635Lb, MOA-2016-BLG-532Lb, KMT-2016-BLG-0625Lb, OGLE-2016-…

astro-ph.EP2023★ 6 cited

Free-Floating planet Mass Function from MOA-II 9-year survey towards the Galactic Bulge

Takahiro Sumi, Naoki koshimoto, David P. Bennett +25

We present the first measurement of the mass function of free-floating planets (FFP) or very wide orbit planets down to an Earth mass, from the MOA-II microlensing survey in 2006-2…

astro-ph.EP2023★ 4 cited

Terrestrial and Neptune mass free-floating planet candidates from the MOA-II 9-year Galactic Bulge survey

Naoki Koshimoto, Takahiro Sumi, David P. Bennett +28

We report the discoveries of low-mass free-floating planet (FFP) candidates from the analysis of 2006-2014 MOA-II Galactic bulge survey data. In this dataset, we found 6,111 microl…

astro-ph.EP2023★ 11 cited

KMT-2022-BLG-0440Lb: A New Microlensing Planet with the Central-Resonant Caustic Degeneracy Broken

Jiyuan Zhang, Weicheng Zang, Youn Kil Jung +57

We present the observations and analysis of a high-magnification microlensing planetary event, KMT-2022-BLG-0440, for which the weak and short-lived planetary signal was covered by…

astro-ph.EP2022★ 3 cited

MOA-2020-BLG-208Lb: Cool Sub-Saturn Planet Within Predicted Desert

Greg Olmschenk, David P. Bennett, Ian A. Bond +74

We analyze the MOA-2020-BLG-208 gravitational microlensing event and present the discovery and characterization of a new planet, MOA-2020-BLG-208Lb, with an estimated sub-Saturn ma…

astro-ph.EP2022★ 22 cited

KMT-2021-BLG-0171Lb and KMT-2021-BLG-1689Lb: Two Microlensing Planets in the KMTNet High-cadence Fields with Followup Observations

Hongjing Yang, Weicheng Zang, Andrew Gould +56

Follow-up observations of high-magnification gravitational microlensing events can fully exploit their intrinsic sensitivity to detect extrasolar planets, especially those with sma…

astro-ph.EP2022★ 12 cited

Four sub-Jovian-mass planets detected by high-cadence microlensing surveys

Cheongho Han, Doeon Kim, Andrew Gould +57

With the aim of finding short-term planetary signals, we investigated the data collected from the high-cadence microlensing surveys. From this investigation, we found four planetar…

astro-ph.EP2022★ 5 cited

MOA-2019-BLG-008Lb: a new microlensing detection of an object at the planet/brown dwarf boundary

E. Bachelet, Y. Tsapras, Andrew Gould +68

We report on the observations, analysis and interpretation of the microlensing event MOA-2019- BLG-008. The observed anomaly in the photometric light curve is best described throug…

astro-ph.EP2022★ 45 cited

Systematic KMTNet Planetary Anomaly Search. V. Complete Sample of 2018 Prime-Field

Andrew Gould, Cheongho Han, Weicheng Zang +65

We complete the analysis of all 2018 prime-field microlensing planets identified by the KMTNet AnomalyFinder. Among the 10 previously unpublished events with clear planetary soluti…

astro-ph.EP2022

MOA-2020-BLG-135Lb: A New Neptune-class Planet for the Extended MOA-II Exoplanet Microlens Statistical Analysis

Stela Ishitani Silva, Clément Ranc, David P. Bennett +33

We report the light-curve analysis for the event MOA-2020-BLG-135, which leads to the discovery of a new Neptune-class planet, MOA-2020-BLG-135Lb. With a derived mass ratio of $q=1…

astro-ph.EP2022★ 18 cited

KMT-2021-BLG-1077L: The fifth confirmed multiplanetary system detected by microlensing

Cheongho Han, Andrew Gould, Ian A. Bond +45

The high-magnification microlensing event KMT-2021-BLG-1077 exhibits a subtle and complex anomaly pattern in the region around the peak. We analyze the lensing light curve of the e…