Results 61 to 70 of about 369 (182)
KMT-2022-BLG-1818Lb,c: A Cold Super-Jupiter with a Saturn Sibling
The Astronomical JournalWe present the discovery and analysis of the sixth microlensing two-planet system, KMT-2022-BLG-1818Lb,c, detected by a follow-up program targeting high-magnification events.
Hongyu Li +79 more
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Primordial Black Hole Dark Matter Simulations Using PopSyCLE
The Astrophysical JournalPrimordial black holes (PBHs), theorized to have originated in the early Universe, are speculated to be a viable form of dark matter. If they exist, they should be detectable through photometric and astrometric signals resulting from gravitational ...
Kerianne Pruett +8 more
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Discerning Parallax Amplitude in Astrometric Microlensing
The 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
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, 2006 This review forms the microlensing part of the 33rd Saas-Fee Advanced Course "Gravitational Lensing: Strong, Weak & Micro'', which was held in April 2003 in Les Diablerets. It contains an introduction to the lensing effects of single and binary stars and it summarizes the state-of-the-art of microlensing observations and prospects at the time of ...
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Detectability of microlensed gravitational waves
Monthly Notices of the Royal Astronomical Society, 2023 ABSTRACT Gravitational lensing describes the bending of the trajectories of light and gravitational waves due to the gravitational potential of a massive object. Strong lensing by galaxies can create multiple images with different overall amplifications, arrival times, and image types. If, furthermore, the gravitational wave encounters a
Simon M C Yeung +5 more
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The Astrophysical JournalWe analyze variability in 15-season optical lightcurves from the doubly imaged lensed quasar SDSS J165043.44+425149.3 (SDSS1650), comprising five seasons of monitoring data from the Maidanak Observatory (277 nights in total, including the two seasons of ...
A. B. Rivera +12 more
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The gravitational microlens influence on X-ray spectral line generated by an AGN accretion disc [PDF]
Serbian Astronomical Journal, 2001 The influence of gravitational microlensing on the X-ray spectral line profiles originated from a relativistic accretion disc has been studied. Using a disc model, we show that microlensing can induce noticeable changes in the line shapes when the ...
Popović L.Č. +4 more
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KMT-2022-BLG-0086: Another Binary-lens Binary-source Microlensing Event
The Astronomical JournalWe present the analysis of a microlensing event KMT-2022-BLG-0086 of which the overall light curve is not described by a binary-lens single-source (2L1S) model, which suggests the existence of an extra lens or an extra source.
Sun-Ju Chung +45 more
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Gravitational microlensing: Results and perspectives in brief [PDF]
Physics of Particles and Nuclei, 2008 8 pages, 1 figure, An invited lecture at the Helmholtz International Summer School "Dense Matter in Heavy Ion Collisions and Astrophysics", Bogoliubov Laboratory of Theoretical Physics, Joint Institute for Nuclear Research, Dubna, Russia, August 21 - September 1, 2006, added reference, corrected ...
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Degeneracies in triple gravitational microlensing [PDF]
Monthly Notices of the Royal Astronomical Society, 2013 We study microlensing light curves by a triple lens, in particular, by a primary star plus two planets. A four-fold degeneracy is confirmed in the light curves, similar to the close and wide degeneracy found in a double lens. Furthermore, we derive a set of equations for triple-lens in the external shear approximation.
Mao, Shude +3 more
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