AU
Andrzej Udalski
astro-ph.SRastro-ph.EPastro-ph.GAastro-ph.HEastro-phastro-ph.IMastro-ph.COgr-qchep-phhep-ex
On Valency
published · living versionsW_49ktsd64·v1 · currentpublished
SN 2019qem: decades of extreme mass loss before the explosion of a luminous, long-lived Type IIn supernova
with Joysankar Majumdar, Mariusz Gromadzki, Takashi J. Moriya, David A. H. Buckley +41
1 version
W_yufcznj6·v1published
W_kfurapv3·v1published
W_grtgmvr3·v1published
W_ap72t5ur·v1published
W_k5h46c7v·v1published
W_fjezd5uz·v1published
W_fwsawu6v·v1published
W_7c5nrf9x·v1published
W_nyn7w7bz·v1published
Preprints & journals
646 papers in the corpus · 1993–2026OGLE-2016-BLG-0523: A Low-mass Brown Dwarf or super-Jupiter in a au Orbit2610.13942v2 · Hongjing Yang, Weicheng Zang, Yoon-Hyun Ryu et al.2026 · 0 citationsarXiv
Light curve spectral energy distribution fitting of 13 carbon-rich Mira variables stars in the Small Magellanic Cloud2610.09537v1 · A. Liberatori, M. Trabucchi, D. Hatzidimitriou et al.2026 · 0 citationsarXiv
Two Low-Mass-Ratio Microlensing Planets from High-Magnification Events: KMT-2021-BLG-0247 and MOA-2023-BLG-1692610.10308v2 · Kansuke Nunota, Andrew Gould, Takahiro Sumi et al.2026 · 0 citationsarXiv
Highly bipolar planetary nebula Hen 2-57 and its possible symbiotic core2609.19874v1 · J. Merc, J. Mikoajewska, K. Ikiewicz et al.2026 · 0 citationsarXiv
KMT-2026-BLG-0083L: A Two-Jovian-Planet System Orbiting an M Dwarf Discovered by Microlensing2609.12451v1 · Cheongho Han, Chung-Uk Lee, Zhixing Li et al.2026 · 0 citationsarXiv
eRASSU J043115.8-711730 :the first pulsating symbiotic super-soft X-ray source in the Magellanic Bridge2607.27730v2 · Tathagata Saha, Chandreyee Maitra, Philip Charles et al.2026 · 0 citationsMon Not R Astron Soc (2026)
KMT-2025-BLG-0975Lb and KMT-2025-BLG-1160Lb: Two Uranus-Mass Planets Beyond the Snow Line Discovered by Microlensing2607.25259v1 · Cheongho Han, Chung-Uk Lee, Andrzej Udalski et al.2026 · 0 citationsarXiv
Four Cold Giant Planets Discovered by High-Cadence Microlensing Surveys2607.04594v1 · Cheongho Han, Chung-Uk Lee, Andrzej Udalski et al.2026 · 0 citationsarXiv
Incorporating physical source parameters into microlensing modeling2606.20555v1 · Mateusz J. Mr'oz, Rados\law Poleski, Andrzej Udalski et al.2026 · 0 citationsarXiv
Eppur non si trovano Vol. 3: Phoebe -- a Mirage of a Primordial Black Hole2606.19442v2 · Andrzej Udalski, Przemek Mr'oz2026 · 0 citationsarXiv
Four-Body Gravitational Microlensing Events Involving Both a Binary Lens and a Binary Source2605.17654v1 · Cheongho Han, Chung-Uk Lee, Andrzej Udalski et al.2026 · 0 citationsarXiv
Mass Production of 2023 KMTNet Microlensing Planets. III: Three Planets from the Subprime Field2605.07392v1 · Hongyu Li, Zhixing Li, Weicheng Zang et al.2026 · 0 citationsarXiv
Thirty Circumbinary Disk Occultation Systems (KH 15D-like stars) from the OGLE Project2605.08470v1 · M. A. Urbanowicz, I. Soszy'nski, P. Pietrukowicz et al.2026 · 0 citationsarXiv
Candidate Microlensing Brown Dwarfs in Binary Lens Systems from the 2023--2025 Observing Seasons2604.07932v1 · Cheongho Han, Andrzej Udalski, Ian A. Bond et al.2026 · 1 citationarXiv
Eppur non si trovano Vol. 2: No Planetary-mass Primordial Black Holes toward the Andromeda Galaxy2604.00111v2 · Przemek Mr'oz, Andrzej Udalski2026 · 0 citationsarXiv
Mass Production of 2023 KMTNet Microlensing Planets. II: Two Planets and A Brown Dwarf2603.13887v2 · Zhixing Li, Hongyu Li, Weicheng Zang et al.2026 · 1 citationarXiv
An Orbit for a Massive Wolf-Rayet Binary in the LMC: An Example of Binary Evolution2603.11357v1 · Breelyn Cocke, Philip Massey, Nidia I. Morrell et al.2026 · 0 citationsarXiv
Two Low Mass-Ratio Microlensing Planets and Two Types of Central-Resonant Degeneracy2603.09045v1 · Yuchen Tang, Weicheng Zang, Yoon-Hyun Ryu et al.2026 · 0 citationsarXiv
Mass Production of 2023 KMTNet Microlensing Planets I: Low Mass Ratio2603.09239v1 · Yoon-Hyun Ryu, Andrzej Udalski, Hongjing Yang et al.2026 · 1 citationarXiv
Three Saturn-mass Microlensing Planets Identified through Signals from Peripheral-caustic Perturbations2602.16095v1 · Cheongho Han, Chung-Uk Lee, Andrzej Udalski et al.2026 · 0 citationsarXiv
KMT-2016-BLG-1337L: A Saturn-mass planet orbiting within a binary system of low-mass stars2602.12610v1 · Cheongho Han, Chung-Uk Lee, Ian A. Bond et al.2026 · 0 citationsarXiv
A comprehensive catalogue of high-mass X-ray binaries in the Large Magellanic Cloud detected during the first eROSITA all-sky survey2602.08152v1 · D. Kaltenbrunner, C. Maitra, F. Haberl et al.2026 · 1 citationarXiv
SXP 31.0 -- the 2025 near-Eddington double X-ray outburst after 26 years of quiescence2602.07459v1 · Malcolm J. Coe, Thomas M. Gaudin, Itumeleng M. Monageng et al.2026 · 0 citationsarXiv
Photometric variability of nitrogen-rich Wolf-Rayet stars in Magellanic Clouds with OGLE2602.05820v1 · Jana Markovi'c, Guadalupe S'aez-Cano, Yael Naz'e et al.2026 · 0 citationsarXiv
The incidence of LBV variability in the LMC2602.04645v1 · V. M. Kalari, J. S. Vink, C. Furey et al.2026 · 0 citationsA&A 708, A343 (2026)
[HP99] 159 -- Properties of the first Supersoft X-ray Source with a Helium star donor2601.16789v1 · H'elene Szegedi, Philip A. Charles, David A. H. Buckley et al.2026 · 0 citationsarXiv
A Newly Identified Degeneracy Keeps the Planetary Interpretation Viable for OGLE-2011-BLG-09502601.13276v1 · Jiyuan Zhang, Weicheng Zang, Andrzej Udalski et al.2026 · 0 citationsarXiv
Broadband study of the Be/X-ray binary pulsar eRASSU J012422.9-724248 in the Magellanic Bridge, near the Eastern Wing of the Small Magellanic Cloud2601.11120v1 · Haonan Yang, Chandreyee Maitra, Frank Haberl et al.2026 · 0 citationsarXiv
KMT-2024-BLG-0816/OGLE-2024-BLG-0519 -- A Microlensing Event with Candidate Free-Floating Planet Lens and Blended Light2601.00325v1 · R. Poleski, Y.-H. Ryu, A. Udalski et al.2026 · 0 citationsarXiv
A free-floating-planet microlensing event caused by a Saturn-mass object.41477875 · Dong, Subo, Wu, Zexuan, Ryu, Yoon-Hyun et al.2026 · 7 citationsScience (New York, N.Y.). 2026;391(6780):96-99
RR Lyrae stars with variable mean magnitudes2512.15636v1 · Gergely Hajdu, Johanna Jurcsik, M'arcio Catelan et al.2025 · 1 citationarXiv
Four Giant Planets from 2024 KMTNet Microlensing Campaign2512.09325v1 · Cheongho Han, Andrzej Udalski, Ian A. Bond et al.2025 · 0 citationsarXiv
Identification of new Galactic symbiotic stars with SALT -- II. New discoveries and characterization of the sample2512.01744v1 · J. Merc, J. Miko\lajewska, K. I\lkiewicz et al.2025 · 3 citationsarXiv
Six binary brown dwarf candidates identified by microlensing2510.23933v1 · Cheongho Han, Chung-Uk Lee, Ian A. Bond et al.2025 · 0 citationsarXiv
Doubling the Number of Blue Large-Amplitude Pulsators: Final Results of Searches for BLAPs in the OGLE Inner Galactic Bulge Fields2510.20823v2 · J. Borowicz, P. Pietrukowicz, J. Skowron et al.2025 · 0 citationsarXiv
Eppur non si trovano: Comments on the Primordial Black Hole Limits in the Galactic Halo2510.20005v1 · P. Mr'oz, A. Udalski, M.K. Szyma'nski et al.2025 · 0 citationsarXiv
A Comprehensive Analysis of Three Microlensing Planet Candidates with the Planet/Binary Degeneracy2509.18345v1 · Jiyuan Zhang, Weicheng Zang, Yoon-Hyun Ryu et al.2025 · 2 citationsarXiv
Three binary-source binary-lens microlensing events from the 2024 microlensing campaign2509.11495v1 · Cheongho Han, Chung-Uk Lee, Andrzej Udalski et al.2025 · 1 citationarXiv
Six microlensing planets detected via sub-day signals during the 2023 -- 2024 season2509.05522v1 · Cheongho Han, Chung-Uk Lee, Andrzej Udalski et al.2025 · 1 citationarXiv
Four binary microlenses with directly measured masses2508.11079v1 · Cheongho Han, Andrzej Udalski, Chung-Uk Lee et al.2025 · 1 citationarXiv
Microlensing optical depth, event rate, and limits on compact objects in dark matter based on 20 yr of OGLE observations of the Small Magellanic Cloud2507.13794v2 · P. Mr'oz, A. Udalski, M.K. Szyma'nski et al.2025 · 13 citationsApJS 280, 49 (2025)
KMT-2024-BLG-0404L: A triple microlensing system consisting of a star, a brown dwarf, and a planet2507.07326v1 · Cheongho Han, Andrzej Udalski, Chung-Uk Lee et al.2025 · 1 citationarXiv
HST pre-imaging of a free-floating planet candidate microlensing event2507.01109v1 · Mateusz Kapusta, Przemek Mroz, Yoon-Hyun Ryu et al.2025 · 3 citationsarXiv
The Ultimate I-band Calibration of the TRGB Standard Candle2506.20766v1 · A. Udalski, D.M. Skowron, J. Skowron et al.2025 · 0 citationsarXiv
MOA-2022-BLG-091Lb and KMT-2024-BLG-1209Lb: Microlensing planets detected through weak caustic-crossing signals2505.22951v1 · Cheongho Han, Chung-Uk Lee, Andrzej Udalski et al.2025 · 2 citationsarXiv
KMT-2022-BLG-1818Lb,c: A Cold Super-Jupiter with a Saturn Sibling2505.05093v2 · Hongyu Li, Jiyuan Zhang, Cheongho Han et al.2025 · 3 citationsarXiv
Systematic KMTNet Planetary Anomaly Search. XII. Complete Sample of 2017 Subprime Field Planets2504.20155v1 · Yuqian Gui, Weicheng Zang, Ruocheng Zhai et al.2025 · 7 citations2024, The Astronomical Journal, Volume 168, Issue 2, id.49, 16 pp
Microlensing events indicate that super-Earth exoplanets are common in Jupiter-like orbits.40273242 · Zang, Weicheng, Jung, Youn Kil, Yee, Jennifer C et al.2025 · 40 citationsScience (New York, N.Y.). 2025;388(6745):400-404
Constraining Lens Masses in Moderately to Highly Magnified Microlensing Events from Gaia2504.11546v2 · U. Pylypenko, Ł. Wyrzykowski, P. J. Miko\lajczyk et al.2025 · 1 citationA&A 705, A24 (2026)
Asteroseismology of Long-Period Variables with OGLE-IV data: Using Global Seismic Parameters as Luminosity Indicators2503.22127v1 · Qiang Xiong, Tanda Li, Jie Yu et al.2025 · 1 citationarXiv
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