Results 1 to 10 of about 15,525 (87)
Signals, 2022 In this work, we provide a compressive sensing architecture for implementing on a space based observatory for detecting transient photometric parallax caused by gravitational microlensing events.
Richard K. Barry, Asmita Korde-Patel
exaly +5 more sources
Discerning Parallax Amplitude in Astrometric Microlensing [PDF]
Astronomical Journal, 2023 Gravitational microlensing is a powerful method for discovering isolated stellar-mass black holes (ISMBHs). These objects make long-duration microlensing events.
Sedighe Sajadian +2 more
exaly +4 more sources
The Impact of the Free-floating Planet Mass Function on the Event Rate for Accurate Microlensing Parallax Determination: Application to Euclid and Roman Parallax Observation [PDF]
Astronomical Journal, 2023 A microlensing event is mainly used to search for free-floating planets (FFPs). To estimate the FFP mass and distance via the microlensing effect, a microlensing parallax is one of the key parameters.
M. Ban
exaly +3 more sources
Parallax Effect in Microlensing Events Due to Free-floating Planets
Astronomical JournalOne of the most important applications of microlensing observations is the detection of free-floating planets (FFPs). The timescale of microlensing due to FFPs ( t _E ) is short (a few days). Discerning the annual parallax effect in observations of these
Parisa Sangtarash, Sedighe Sajadian
exaly +3 more sources
OGLE-2016-BLG-1195 AO: Lens, Companion to Lens or Source, or None of the Above?
The Astronomical Journal, 2023 We systematically investigate Vandorou et al.’s claim to have detected the host star of the low-mass-ratio ( q < 10 ^−4 ) microlensing planet OGLE-2016-BLG-1195Lb, via Keck adaptive optics (AO) measurements Δ t = 4.12 yr after the event’s peak ( t _0 ...
Andrew Gould +6 more
doaj +1 more source
OGLE-2019-BLG-1180Lb: Discovery of a Wide-orbit Jupiter-mass Planet around a Late-type Star
The Astronomical Journal, 2023 We report on the discovery and analysis of the planetary microlensing event OGLE-2019-BLG-1180 with a planet-to-star mass ratio q ∼ 0.003. The event OGLE-2019-BLG-1180 has unambiguous cusp-passing and caustic-crossing anomalies, which were caused by a ...
Sun-Ju Chung +35 more
doaj +1 more source
MOA-2010-BLG-328: Keck and HST Expose the Limits of Occams Razor in Microlensing
The Astronomical JournalWe present high-resolution follow-up data of the microlensing event MOA-2010-BLG-328, using Keck and the Hubble Space Telescope. Keck data, taken 8 yr after the event, reveal a strong lens detection enabling measurement of lens flux and source-lens ...
Aikaterini Vandorou +10 more
doaj +1 more source
The Astrophysical Journal Supplement SeriesThe Vera C. Rubin Legacy Survey of Space and Time will discover thousands of microlensing events across the Milky Way, allowing for the study of populations of exoplanets, stars, and compact objects.
Natasha S. Abrams +13 more
doaj +1 more source
The Astronomical JournalThis study investigates orbital parallax in gravitational microlensing events, focusing on OGLE-2017-BLG-0103 and OGLE-2017-BLG-0192. For events with timescales ≤60 days, a Jerk-Parallax degeneracy arises due to high Jerk velocity ( $\tilde{{v}_{j ...
Sarang Shah
doaj +1 more source
Universe, 2017 First proposed by Paczynski in 1986, microlensing has been instrumental in the search for compact dark matter as well as discovery and characterization of exoplanets.
Chien-Hsiu Lee
doaj +1 more source