activity
20202026
most citedAn isolated mass gap black hole or neutron star detected with astrometric microlensing

140 citations · 435 across the 49 of their papers we have counts for

collaborators
Showing 2022Show all

12 papers · 1 filter

astro-ph.EP2022★ 9 cited

Mass Production of 2021 KMTNet Microlensing Planets III: Analysis of Three Giant Planets

In-Gu Shin, Jennifer C. Yee, Andrew Gould +45

We present the analysis of three more planets from the KMTNet 2021 microlensing season. KMT-2021-BLG-0119Lb is a planet orbiting an early M-dwarf or a K-dwar…

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.SR2022★ 9 cited

Brown-dwarf companions in microlensing binaries detected during the 2016--2018 seasons

Cheongho Han, Yoon-Hyun Ryu, In-Gu Shin +60

With the aim of finding microlensing binaries containing brown-dwarf (BD) companions, we investigate the microlensing survey data collected during the 2016--2018 seasons. For this…

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★ 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…

astro-ph.EP2022★ 25 cited

Mass Production of 2021 KMTNet Microlensing Planets I

Yoon-Hyun Ryu, Youn Kil Jung, Hongjing Yang +18

We inaugurate a program of ``mass production'' of microlensing planets discovered in 2021 KMTNet data, with the aim of laying the basis for future statistical studies. While we ult…

astro-ph.GA2022★ 140 cited

An isolated mass gap black hole or neutron star detected with astrometric microlensing

Casey Y. Lam, Jessica R. Lu, Andrzej Udalski +42

We present the analysis of five black hole candidates identified from gravitational microlensing surveys. Hubble Space Telescope astrometric data and densely sampled lightcurves fr…

astro-ph.EP2022★ 4 cited

OGLE-2016-BLG-1093Lb: A Sub-Jupiter-mass Spitzer Planet Located in Galactic Bulge

In-Gu Shin, Jennifer C. Yee, Kyu-Ha Hwang +61

OGLE-2016-BLG-1093 is a planetary microlensing event that is part of the statistical microlens parallax sample. The precise measurement of the microlens parallax effect f…

astro-ph.SR2022

An Isolated Stellar-Mass Black Hole Detected Through Astrometric Microlensing

Kailash C. Sahu, Jay Anderson, Stefano Casertano +90

We report the first unambiguous detection and mass measurement of an isolated stellar-mass black hole (BH). We used the Hubble Space Telescope (HST) to carry out precise astrometry…