Results 41 to 50 of about 3,383 (120)

OGLE-2014-BLG-0289: Precise Characterization of a Quintuple-peak Gravitational Microlensing Event [PDF]

, 2018
We present the analysis of the binary-microlensing event OGLE-2014-BLG-0289. The event light curve exhibits five very unusual peaks, four of which were produced by caustic crossings and the other by a cusp approach.
A. Bhattacharya, A. Fukui, A. Gould, A. Sharan, A. Udalski, A. Yonehara, Alard C., Albrow M. D., An J. H., Aubourg E., Bessell M. S., C. Beichman, C. H. Ling, C. Han, C. Ranc, C. Snodgrass, Calchi Novati S., Choi J.-Y., Claret A., D. J. Sullivan, D. M. Bramich, D. P. Bennett, D. Suzuki, E. Bachelet, F. Abe, G. DÁgo, Gould A., Gould A., H. Munakata, Han C., Han C., I. A. Bond, I. A. Steele, I. Soszyński, I.-G. Shin, J. C. Yee, J. Menzies, J. Skowron, J. Wambsganss, K. Horne, K. Kawasaki, K. Masuda, K. Ohnishi, K. Ulaczyk, M. C. A. Li, M. Dominik, M. Donachie, M. Hundertmark, M. K. Szymański, M. Nagakane, Mróz P., N. Kains, N. Koshimoto, N. Rattenbury, Nataf D. M., P. Evans, P. J. Tristram, P. Mróz, P. Pietrukowicz, Poindexter S., R. Barry, R. Figuera Jaimes, R. Poleski, R. Schmidt, R. W. Pogge, S. Calchi Novati, S. Carey, S. Kozłowski, S. Miyazaki, Schechter P. L., Shin I.-G., Skowron J., Street R. A., Sumi T., T. Saito, T. Sumi, T. Yamada, Udalski A., Udalski A., Udalski A., V. Bozza, W. Zhu, W.-T. Kim, Woźniak P. R., Wyrzykowski L., Y. Hirao, Y. Itow, Y. K. Jung, Y. Matsubara, Y. Muraki, Yee J. C., Yoo J., Zhu W., Ł. Wyrzykowski   +93 more
core   +5 more sources

Assessing the Impact of Binary Systems on Microlensing Using SPISEA and PopSyCLE Population Simulations

The Astrophysical Journal
Gravitational microlensing provides a unique opportunity to probe the mass distribution of stars, black holes, and other objects in the Milky Way. Population simulations are necessary to interpret results from microlensing surveys.
Natasha S. Abrams, Jessica R. Lu, Casey Y. Lam, Michael S. Medford, Matthew W. Hosek Jr., Sam Rose   +5 more
doaj   +1 more source

Lens Masses and Distances from Microlens Parallax and Flux

, 2015
I present a novel method for measuring lens masses for microlensing events. By combining a measured lens flux with the microlens parallax vector pi_E, it is possible to derive the mass of the lens system without knowing the angular size of the Einstein ...
Yee, Jennifer C.
core   +1 more source

microJAX: A Differentiable Framework for Microlensing Modeling with GPU-accelerated Image-centered Ray Shooting

The Astrophysical Journal
We introduce microJAX , the first fully differentiable implementation of the image-centered ray shooting algorithm for gravitational microlensing. Built on JAX and its XLA just-in-time compiler, microJAX exploits GPU parallelism while providing exact ...
Shota Miyazaki, Hajime Kawahara
doaj   +1 more source

Interpretation of Strong Short-Term Central Perturbations in the Light Curves of Moderate-Magnification Microlensing Events [PDF]

, 2009
To improve the planet detection efficiency, current planetary microlensing experiments are focused on high-magnification events searching for planetary signals near the peak of lensing light curves.
A. Allan, A. Cassan, A. Fukui, A. Gould, A. Korpela, A. Udalski, A. Williams, Albrow, and M. Zub, B. S. Gaudi, B.-G. Park, C. H. Ling, C. Han, C. S. Botzler, C. Snodgrass, C.-U. Lee, Chung, D. D. Prester, D. Kim, D. Kubas, D. L. DePoy, D. M. Bramich, D. P. Bennett, D. S. Sullivan, Dominik, Dong, Dong, E. Corrales, F. Abe, G. Pietrzyński, G. W. Christie, Ghosh, Gould, Gould, Gould, H. Calitz, Han, Han, Han, I. A. Bond, I. Soszyński, I. Steele, J. A. R. Caldwell, J. B. Hearnshaw, J. B. Marquette, J. Donatowicz, J. Greenhill, J. McCormick, J. Menzies, J. P. Beaulieu, J. Wambsganss, K. C. Sahu, K. Furusawa, K. Hill, K. Horne, K. Kamiya, K. Masuda, K. Ohnishi, K. R. Pollard, K. Ulaczyk, K.-H. Hwang, L. A. B. Monard, L. Skuljan, M. Bode, M. Burgdorf, M. D. Albrow, M. Dominik, M. Hoffman, M. K. Szymański, M. Kubiak, M. Nagaya, N. Kains, N. Miyake, N. Rattenbury, O. Szewczyk, P. C. M. Yock, P. Fouque, P. J. Tristram, P. M. Kilmartin, P. Meintjes, Park, Pejcha, R. Martin, R. Street, R. W. Pogge, S. Brillant, S. Dieters, S. Dong, T. Natusch, T. Sako, T. Sumi, T. Tokumura, To. Saito, U. G. Jørgensen, Udalski, V. Batista, W. Allen, W. L. Sweatman, W. Lin, Y. C. Perrott, Y. Itow, Y. Matsubara, Y. Muraki, Y. Tsapras, Yoo, Ł. Wyrzykowski   +105 more
core   +3 more sources

An ice giant exoplanet interpretation of the anomaly in microlensing event OGLE-2011-BLG-0173

, 2018
We analyze the microlensing event OGLE-2011-BLG-0173, which shows a small perturbation at the end of the microlensing event caused by the primary lens. We consider both binary lens and binary source models and we explore their degeneracies, some of which
Gaudi, B. S., Kozlowski, S., Pietrukowicz, P., Poleski, R., Skowron, J., Soszynski, I., Szymanski, M. K., Udalski, A., Ulaczyk, K., Wyrzykowski, L.   +9 more
core   +1 more source

Optimal Survey Strategies and Predicted Planet Yields for the Korean Microlensing Telescope Network [PDF]

, 2014
The Korean Microlensing Telescope Network (KMTNet) will consist of three 1.6m telescopes each with a 4 deg^{2} field of view (FoV) and will be dedicated to monitoring the Galactic Bulge to detect exoplanets via gravitational microlensing.
Gaudi, B. Scott, Gould, Andrew P., Han, Cheongho, Henderson, Calen B., Nataf, David, Penny, Matthew T., Skowron, Jan   +6 more
core   +3 more sources

MOA-2010-BLG-328: Keck and HST Expose the Limits of Occams Razor in Microlensing

The Astronomical Journal
We 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, David P. Bennett, Jean-Philippe Beaulieu, Aparna Bhattacharya, Joshua W. Blackman, Ian A. Bond, Andrew A. Cole, Naoki Koshimoto, Clément Ranc, Natalia E. Rektsini, Sean K. Terry   +10 more
doaj   +1 more source

Starspot induced effects in microlensing events with rotating source star

, 2015
We consider the effects induced by the presence of hot and cold spots on the source star in the light curves of simulated microlensing events due to either single or binary lenses taking into account the rotation of the source star and the orbital motion
De Paolis, Francesco, Giordano, Mosè, Ingrosso, Gabriele, Nucita, Achille A.   +3 more
core   +1 more source

Observations of the Binary Microlens Event MACHO-98-SMC-1 by the Microlensing Planet Search Collaboration

, 1998
We present the observations of the binary lensing event MACHO-98-SMC-1 conducted at the Mt.~Stromlo 74" telescope by the Microlensing Planet Search (MPS) collaboration.
A. C. Becker, Afonso C., B. A. Peterson, B. R. Johnson, Becker A. C., Bennett D., Bennett D., Bertelli G., Binney J., D. P. Bennett, Diaz-Cordoves J., Diaz-Cordoves J., Honma M., J. Quinn, L. J. King, P. C. Fragile, Palanque-Delabrouille N., S. H. Rhie, Sahu K. C., Udalski A., Udalski A.   +20 more
core   +2 more sources