Results 31 to 40 of about 10,480 (204)

Systematic KMTNet Planetary Anomaly Search. VIII. Complete Sample of 2019 Subprime Field Planets

The Astronomical Journal, 2023
We complete the publication of all microlensing planets (and “possible planets”) identified by the uniform approach of the KMT AnomalyFinder system in the 21 KMT subprime fields during the 2019 observing season, namely, KMT-2019-BLG-0298, KMT-2019-BLG ...
Youn Kil Jung, Weicheng Zang, Hanyue Wang, Cheongho Han, Andrew Gould, Andrzej Udalski, Lead Authors, Michael D. Albrow, Sun-Ju Chung, Kyu-Ha Hwang, Yoon-Hyun Ryu, In-Gu Shin, Yossi Shvartzvald, Hongjing Yang, Jennifer C. Yee, Sang-Mok Cha, Dong-Jin Kim, Seung-Lee Kim, Chung-Uk Lee, Dong-Joo Lee, Yongseok Lee, Byeong-Gon Park, Richard W. Pogge, The KMTNet Collaboration, Michał K. Szymański, Jan Skowron, Radek Poleski, Igor Soszyński, Paweł Pietrukowicz, Szymon Kozłowski, Krzysztof Ulaczyk, Krzysztof A. Rybicki, Patryk Iwanek, Marcin Wrona, The OGLE Collaboration, Jonathan Green, Steve Hennerley, Andrew Marmont, Shude Mao, Dan Maoz, Jennie McCormick, Tim Natusch, Matthew T. Penny, Ian Porritt, Wei Zhu, The Tsinghua and FUN Follow-Up Teams   +45 more
doaj   +1 more source

Using graphical and pictorial representations to teach introductory astronomy students about the detection of extrasolar planets via gravitational microlensing [PDF]

, 2016
The detection and study of extrasolar planets is an exciting and thriving field in modern astrophysics, and an increasingly popular topic in introductory astronomy courses.
Bransford J. D., Colin S. Wallace, Committe on Undergraduate Physics Education Research and Implementation, Edward E. Prather, Einstein A., Gina Brissenden, Hartle J. B., Linder C., McDermott L. C., Prather E. E., Singer S. R., Timothy G. Chambers   +11 more
core   +3 more sources

Frequency-shift in the gravitational microlensing [PDF]

Physical Review D, 2020
5 pages, 3 figures, accepted in Physical Review ...
openaire   +2 more sources

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, Andrzej Udalski, Jennifer C. Yee, Andrew Gould, Leading Authors, Michael D. Albrow, Youn Kil Jung, Kyu-Ha Hwang, Cheongho Han, Yoon-Hyun Ryu, In-Gu Shin, Yossi Shvartzvald, Hongjing Yang, Weicheng Zang, Sang-Mok Cha, Dong-Jin Kim, Seung-Lee Kim, Chung-Uk Lee, Dong-Joo Lee, Yongseok Lee, Byeong-Gon Park, Richard W. Pogge, The KMTNet collaboration, Radek Poleski, Przemek Mróz, Jan Skowron, Michał K. Szymański, Igor Soszyński, Paweł Pietrukowicz, Szymon Kozłowski, Krzysztof Ulaczyk, Krzysztof A. Rybicki, Patryk Iwanek, Marcin Wrona, Mariusz Gromadzki, The OGLE collaboration   +35 more
doaj   +1 more source

Gravitational microlensing of AGN dusty tori [PDF]

, 2012
We investigated the gravitational microlensing of active galactic nucleus dusty tori in the case of lensed quasars in the infrared domain. The dusty torus is modeled as a clumpy two-phase medium. To obtain spectral energy distributions and images of tori
Baes, Maarten, Jovanović, Predrag, Popović, Luka Č., Stalevski, Marko   +3 more
core   +2 more sources

GRAVITATIONAL MICROLENSING BY THE ELLIS WORMHOLE [PDF]

The Astrophysical Journal, 2010
27 pages, 4 figures, ApJ ...
openaire   +2 more sources

Gravitational microlensing of fractal sources [PDF]

Monthly Notices of the Royal Astronomical Society, 2004
Gravitational microlensing has proven to be a powerful tool in the study of quasars, providing some of the strongest limits on the scales of structure in the central engine. Typically sources are considered to be smoothly varying on some particular scale; such simple sources result in recognisable time scales in microlensing light curves from which the
openaire   +2 more sources

Real-Time Detection Of Gravitational Microlensing [PDF]

Symposium - International Astronomical Union, 1996
Real-time detection of microlensing has moved from proof of concept in 1994 (Udalski et al. 1994a, Alcock et al. 1994) to a steady stream of events this year. Global dissemination of these events by the MACHO and OGLE collaborations has made possible intensive photometric and spectroscopic follow up from widely dispersed sites confirming the ...
Pratt, M. R., Alcock, C., Allsman, R. A., Alves, D., Axelrod, T. S., Becker, A., Bennett, D. P., Cook, K. H., Freeman, K. C., Griest, K., Guern, J., Lehner, M., Marshall, S. L., Peterson, B. A., Quinn, P. J., Reiss, D., Rodgers, A. W., Stubbs, C., Sutherland, W., Welch, D.   +19 more
openaire   +2 more sources

Searching for the QCD Axion with Gravitational Microlensing [PDF]

Physical Review Letters, 2017
The phase transition responsible for axion dark matter production can create large amplitude isocurvature perturbations which collapse into dense objects known as axion miniclusters. We use microlensing data from the EROS survey, and from recent observations with the Subaru Hyper Suprime Cam to place constraints on the minicluster scenario.
Fairbairn, Malcolm, Marsh, David J.E., Quevillon, Jérémie   +2 more
openaire   +4 more sources

Gravitational Lensing of Charged Ayon‐Beato‐Garcia Black Holes and Nonlinear Effects of Maxwell Fields

Advances in High Energy Physics, Volume 2018, Issue 1, 2018., 2018
Nonsingular Ayon‐Beato‐Garcia (ABG) spherically symmetric static black hole (BH) with charge to mass ratio q = g/2m is metric solution of Born Infeld nonlinear Maxwell‐Einstein theory. Central region of the BH behaves as (anti‐)de Sitter for (|q | > 1) | q | < 1.
H. Ghaffarnejad, M. Amirmojahedi, H. Niad, Andrea Coccaro   +3 more
wiley   +1 more source