Results 41 to 50 of about 3,374 (103)

A systematic fitting scheme for caustic-crossing microlensing events [PDF]

, 2009
We outline a method for fitting binary-lens caustic-crossing microlensing events based on the alternative model parameterisation proposed and detailed in Cassan (2008). As an illustration of our methodology, we present an analysis of OGLE-2007-BLG-472, a
A. Cassan, A. Udalski, A. Williams, Bond, Bramich, C. Snodgrass, C. Vinter, Cassan, Cassan, Ch. Coutures, Chabrier, Charbonneau, D. Dominis Prester, D. Kubas, D. M. Bramich, D. P. Bennett, Dominik, Dominik, Dominik, Dominik, Dwek, Einstein, Eisenhauer, Erdl, G. Pietrzyński, Ghosh, Griest, Holtzman, I. Soszyński, I. Steele, J. A. R. Caldwell, J. B. Marquette, J. Donatowicz, J. Greenhill, J. Menzies, J. Wambsganss, J.-P. Beaulieu, Jaroszynski, K. C. Sahu, K. H. Cook, K. Horne, K. R. Pollard, K. Ulaczyk, Kervella, Kubas, M. Bode, M. Burgdorf, M. D. Albrow, M. Dominik, M. K. Szymański, M. Kubiak, M. Zub, Mao, N. Kains, N. Rattenbury, O. Szewczyk, P. Fouqué, Paczyński, R. Martin, S. Brillant, S. Dieters, S. Kane, Stanek, T. Anguita, Tsapras, U. G. Jørgensen, Udalski, V. Batista, Y. Tsapras, Ł. Wyrzykowski   +69 more
core   +4 more sources

Revisiting a Quasar Microlensing Event Towards AGN J1249+3449

Universe
The gravitational wave event GW190521 seems to be the only BH merger event possibly correlated with an electromagnetic counterpart, which appeared about 34 days after the GW event.
Mario Cazzolla, Francesco De Paolis, Antonio Franco, Achille Nucita   +3 more
doaj   +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

Ambiguities in fits of binary lens galactic microlensing events

, 1997
36 pages in LaTeX2e format including 30 PostScript figures, final version accepted for publication in A& ...
openaire   +2 more sources

OGLE-2017-BLG-0448Lb: A Low Mass–Ratio Wide-orbit Microlensing Planet?

The Astronomical Journal
The gravitational microlensing technique is most sensitive to planets in a Jupiter-like orbit and has detected more than 200 planets. However, only a few wide-orbit ( s > 2) microlensing planets have been discovered, where s is the planet-to-host ...
Ruocheng Zhai, Radosław Poleski, Weicheng Zang, Youn Kil Jung, Andrzej Udalski, Renkun Kuang, Leading Authors, Michael D. Albrow, Sun-Ju Chung, Andrew Gould, Cheongho Han, Kyu-Ha Hwang, Yoon-Hyun Ryu, In-Gu Shin, Yossi Shvartzvald, Hongjing Yang, Jennifer C. Yee, Sang-Mok Cha, Dong-Jin Kim, Hyoun-Woo Kim, Seung-Lee Kim, Chung-Uk Lee, Dong-Joo Lee, Yongseok Lee, Byeong-Gon Park, Richard W. Pogge, The KMTNet Collaboration, Jan Skowron, Michał K. Szymański, Igor Soszyński, Krzysztof Ulaczyk, Paweł Pietrukowicz, Szymon Kozłowski, Przemek Mróz, Krzysztof A. Rybicki, Patryk Iwanek, Marcin Wrona, Mariusz Gromadzki, The OGLE Collaboration, Hanyue Wang, Shude Mao, Jiyuan Zhang, Qiyue Qian, Wei Zhu, The MAP Collaboration   +44 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

Search for exoplanets in M31 with pixel-lensing and the PA-99-N2 event revisited [PDF]

, 2010
Several exoplanets have been detected towards the Galactic bulge with the microlensing technique. We show that exoplanets in M31 may also be detected with the pixel-lensing method, if telescopes making high cadence observations of an ongoing microlensing
A. Gould, A. Gould, A. Riffesser, A.F. Zakharov, A.P.S. Crotts, Achille Nucita, Alexander Zakharov, D. Kim, E. Kerins, E. Kerins, E.A. Baltz, Francesco De Paolis, G. Covone, G. Ingrosso, G. Ingrosso, G. Ingrosso, Gabriele Ingrosso, H.J. Witt, H.J. Witt, J.H. An, K. Griest, P. Baillon, Philippe Jetzer, R. Ansari, S. Calchi Novati, S. Dong, S. Ida, S. Mao, S. Paulin-Henriksson, S. Tabachnik, S.-J. Chung, Sebastiano Calchi Novati, V. Bozza   +32 more
core   +1 more source

KMT-2018-BLG-0029Lb and OGLE-2019-BLG-0960Lb: Mass Measurements for Two Super-Earth Microlensing Planets

The Astronomical Journal
KMT-2018-BLG-0029Lb and OGLE-2019-BLG-0960Lb were the lowest mass-ratio microlensing planets at the time of discovery. For both events, microlensing parallax measurements from the Spitzer Space Telescope implied lens systems that were more distant and ...
Keming Zhang, Sean K. Terry, Joshua S. Bloom, B. Scott Gaudi, Jessica R. Lu   +4 more
doaj   +1 more source

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

Microlensing Searches for Exoplanets

, 2018
Gravitational microlensing finds planets through their gravitational influence on the light coming from a more distant background star. The presence of the planet is then inferred from the tell-tale brightness variations of the background star during the
Tsapras, Yiannis
core   +1 more source