Results 51 to 60 of about 3,356 (111)

Evolutionary algorithm-based analysis of gravitational microlensing lightcurves

, 2012
A new algorithm developed to perform autonomous fitting of gravitational microlensing lightcurves is presented. The new algorithm is conceptually simple, versatile and robust, and parallelises trivially; it combines features of extant evolutionary ...
Asada, Beaulieu, Bennett, Bennett, Bennett, Bourassa, Bozza, Burnham, Cassan, Charbonneau, Charbonneau, Di Stefano, Dominik, Dominik, Eiben, Gaudi, Gaudi, Gaudi, Gould, Gregory, Haario, Haupt, Heavens, Holland, Hundertmark, Jaroszyński, Kains, King, Kramer, Lagarias, Mao, Mao, Michalewicz, Michalewicz, Miller, Moré, Nelder, Night, Pospichal, Press, Quanz, Rajpaul, Ralston, Risco-Martín, Shin, Shvartzvald, Skowron, Sumi, Sumi, Thierens, Udalski, V. Rajpaul, Vermaak, Vermaak, Wambsganss, Wehrens, Witt   +56 more
core   +1 more source

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

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

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

MACHO 96-LMC-2: Lensing of a Binary Source in the LMC and Constraints on the Lensing Object

, 2000
We present photometry and analysis of the microlensing alert MACHO 96-LMC-2. The ~3% photometry provided by the Global Microlensing Alert Network follow--up effort reveals a periodic modulation in the lightcurve.
A. B. Tomaney, A. C. Becker, A. J. Drake, Afonso C., B. A. Peterson, Becker A., C. A. Nelson, C. Alcock, C. W. Stubbs, D. Minniti, D. P. Bennett, D. R. Alves, D. Welch, Derue F., Dominik M., K. C. Freeman, K. Griest, K. H. Cook, M. Geha, M. J. Lehner, M. R. Pratt, P. J. Quinn, P. Popowski, R. A. Allsman, S. L. Marshall, Schwering P. B. W., T. S. Axelrod, T. Vandehei, W. Sutherland   +28 more
core   +1 more source

The complete catalogue of light curves in equal-mass binary microlensing [PDF]

, 2015
The light curves observed in microlensing events due to binary lenses span an extremely wide variety of forms, characterised by U-shaped caustic crossings and/or additional smoother peaks.
Bozza, Valerio, D'Ago, Giuseppe, Dominik, Martin, Liebig, Christine   +3 more
core   +2 more sources

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

The first radial velocity measurements of a microlensing event: no evidence for the predicted binary

, 2015
The gravitational microlensing technique allows the discovery of exoplanets around stars distributed in the disk of the galaxy towards the bulge. However, the alignment of two stars that led to the discovery is unique over the timescale of a human life ...
Beaulieu, J. -P., Boisse, I., Fakhardji, W., Figueira, P., Ranc, C., Santerne, A., Santos, N. C., Sousa, S. G.   +7 more
core   +3 more sources

Unveiling MOA-2007-BLG-192: An M Dwarf Hosting a Likely Super-Earth

The Astronomical Journal
We present an analysis of high-angular-resolution images of the microlensing target MOA-2007-BLG-192 using Keck adaptive optics and the Hubble Space Telescope.
Sean K. Terry, Jean-Philippe Beaulieu, David P. Bennett, Euan Hamdorf, Aparna Bhattacharya, Viveka Chaudhry, Andrew A. Cole, Naoki Koshimoto, Jay Anderson, Etienne Bachelet, Joshua W. Blackman, Ian A. Bond, Jessica R. Lu, Jean Baptiste Marquette, Clément Ranc, Natalia E. Rektsini, Kailash Sahu, Aikaterini Vandorou   +17 more
doaj   +1 more source

KMT-2025-BLG-1616Lb: First Microlensing Bound Planet From DREAMS

The Astronomical Journal
We present observations and analysis of the bound planetary microlensing event KMT-2025-BLG-1616. The planetary signal was captured by the Korea Microlensing Telescope Network and the Dark Energy Camera Rogue Earths and Mars Survey (DREAMS).
Hongjing Yang, Weicheng Zang, Yoon-Hyun Ryu, Takahiro Sumi, Jiyuan Zhang, Hongyu Li, Cheongho Han, (Leading Authors), Yuchen Tang, Qiyue Qian, Zhixing Li, Yuxin Shang, Xikai Shan, Shude Mao, Guillermo Damke, Alfredo Zenteno, Steve Heathcote, Konstantina Boutsia, Przemek Mróz, Xiurui Zhao, Matthew Penny, Sean Terry, Patrick Tamburo, Timothy Cunningham, Quanzhi Ye, Eric W. Peng, Rachel Street, Katarzyna Kruszyńska, Etienne Bachelet, Yiannis Tsapras, Markus Hundertmark, (The DREAMS Collaboration), Michael D. Albrow, Sun-Ju Chung, Andrew Gould, Kyu-Ha Hwang, Youn Kil Jung, In-Gu Shin, Yossi Shvartzvald, Jennifer C. Yee, Dong-Jin Kim, Chung-Uk Lee, Byeong-Gon Park, (The KMTNet Collaboration), David P. Bennett, Ian A. Bond, Ryusei Hamada, Yuki Hirao, Asahi Idei, Shuma Makida, Shota Miyazaki, Tutumi Nagai, Togo Nagano, Seiya Nakayama, Mayu Nishio, Kansuke Nunota, Ryo Ogawa, Ryunosuke Oishi, Yui Okumoto, Nicholas J. Rattenbury, Yuki K. Satoh, Daisuke Suzuki, Motohide Tamura, Takuto Tamaoki, Hibiki Yama, (The PRIME Collaboration)   +65 more
doaj   +1 more source