Results 31 to 40 of about 369 (182)

Microlensing Searches for Exoplanets

Geosciences, 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
Yiannis Tsapras
doaj   +1 more source

Mass Determination with Gravitational Microlensing [PDF]

The Astrophysical Journal, 1996
19 pages in postscript (four figures included), submitted to ...
Mao, Shude, Paczyński, Bohdan
openaire   +2 more sources

Gravitational Microlensing by Clustered MACHOs [PDF]

The Astrophysical Journal, 1996
uuencoded, gzipped PostScript, 14 ...
Benton Metcalf R., Silk J.
openaire   +2 more sources

Defocusing gravitational microlensing [PDF]

Physica Scripta, 1997
19 pages, latex, submitted to Physica ...
Capozziello, Salvatore, de Ritis, Ruggiero, Mank'o, Vladimir, Marino, Alma Angela, Marmo, Giuseppe   +4 more
openaire   +2 more sources

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

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

GRAVITATIONAL MICROLENSING BY THE ELLIS WORMHOLE [PDF]

The Astrophysical Journal, 2010
27 pages, 4 figures, ApJ ...
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