Results 21 to 30 of about 3,383 (120)

Compact binaries through a lens: Silent versus detectable microlensing for the LIGO-Virgo-KAGRA gravitational wave observatories

Physical Review D, 2023
17 pages, 12 Figures. Updated References. Submitted to Phys.
R. Bondarescu, H. Ubach, O. M. Bulashenko, A. P. Lundgren   +3 more
openalex   +4 more sources

Fitting binary lens gravitational microlensing events with example-based algorithms

, 2007
Fitting binary lens models to gravitational microlensing event is currently a time consuming and labour-intensive process. Example-based algorithms more commonly used in the field of data mining were applied to simulatded and observed light curves in order to facilitate the fitting of a simple-seven-parameter binary lens model with minimal human ...
P. Vermaak
openalex   +2 more sources

Galactic microlensing : binary-lens light curve morphologies and results from the Rosetta spacecraft bulge survey

, 2014
For 20 years now, gravitational microlensing observations towards the Galactic bulge have provided us with a wealth of information about the stellar and planetary content of our Galaxy, which is inaccessible via other current methods. This thesis summarises work on two research topics that arose in the context of exoplanetary microlensing, but we take ...
C. Liebig
openalex   +3 more sources

The road toward imaging a black hole: A personal perspective

Natural Sciences, Volume 2, Issue 4, October 2022., 2022
The article describes the authors personal journey towards developig the Event Horizon Telescope and the first image of a black hole. Left: predcition made by the author and collaborators proposing the black hole imaging in 2000. Right: the two images observed and published by the Event Horizon Telescope in 2019 and 2022.
Heino Falcke
wiley   +1 more source

A Binary Origin for the First Isolated Stellar-mass Black Hole Detected with Astrometric Microlensing

The Astrophysical Journal Letters, 2023
The Milky Way is believed to host hundreds of millions of quiescent stellar-mass black holes (BHs). In the last decade, some of these objects have been potentially uncovered via gravitational microlensing events.
Alejandro Vigna-Gómez, Enrico Ramirez-Ruiz   +1 more
doaj   +1 more source

Detecting Multiplanetary Systems with Gravitational Microlensing and the Roman Space Telescope

The Astronomical Journal, 2023
It is plausible that most of the Stars in the Milky Way Galaxy, like the Sun, consist of planetary systems, instead of a single planet. Out of the estimately discovered 3980 planet-hosting stars, about 860 of them are known to be multiplanetary systems ...
Hossein Fatheddin, Sedighe Sajadian
doaj   +1 more source

MOA-2020-BLG-208Lb: Cool Sub-Saturn-mass Planet within Predicted Desert

The Astronomical Journal, 2023
We analyze the MOA-2020-BLG-208 gravitational microlensing event and present the discovery and characterization of a new planet, MOA-2020-BLG-208Lb, with an estimated sub-Saturn mass.
Greg Olmschenk, David P. Bennett, Ian A. Bond, Weicheng Zang, Youn Kil Jung, Jennifer C. Yee, Etienne Bachelet, Leading authors, Fumio Abe, Richard K. Barry, Aparna Bhattacharya, Hirosane Fujii, Akihiko Fukui, Yuki Hirao, Stela Ishitani Silva, Yoshitaka Itow, Rintaro Kirikawa, Iona Kondo, Naoki Koshimoto, Yutaka Matsubara, Sho Matsumoto, Shota Miyazaki, Brandon Munford, Yasushi Muraki, Arisa Okamura, Clément Ranc, Nicholas J. Rattenbury, Yuki Satoh, Takahiro Sumi, Daisuke Suzuki, Taiga Toda, Paul J. Tristram, Aikaterini Vandorou, Hibiki Yama, The MOA Collaboration, Michael D. Albrow, Sang-Mok Cha, Sun-Ju Chung, Andrew Gould, Cheongho Han, Kyu-Ha Hwang, Dong-Jin Kim, Hyoun-Woo Kim, Seung-Lee Kim, Chung-Uk Lee, Dong-Joo Lee, Yongseok Lee, Byeong-Gon Park, Richard W. Pogge, Yoon-Hyun Ryu, In-Gu Shin, Yossi Shvartzvald, The KMTNet Collaboration, Grant Christie, Tony Cooper, John Drummond, Jonathan Green, Steve Hennerley, Jennie McCormick, L. A. G. Monard, Tim Natusch, Ian Porritt, Thiam-Guan Tan, The MicroFUN Collaboration, Shude Mao, Dan Maoz, Matthew T. Penny, Wei Zhu, The MAP Follow-Up Collaboration, V. Bozza, Arnaud Cassan, Martin Dominik, Markus Hundertmark, R. Figuera Jaimes, K. Kruszyńska, K. A. Rybicki, R. A. Street, Y. Tsapras, Joachim Wambsganss, Ł. Wyrzykowski, P. Zieliński, The OMEGA Collaboration, Gioia Rau   +82 more
doaj   +1 more source

Beyond Caustic Crossings: Properties of Binary Microlensing Light Curves [PDF]

, 2007
Binary microlensing light curves have a variety of morphologies. Many are indistinguishable from point lens light curves. Of those that deviate from the point lens form, caustic crossing light curves have tended to dominate identified binary lens events.
Christopher Night, Dominik M., Duquennoy A., Erdl H., Jaroszynski M., Megan Schwamb, Rosanne Di Stefano, Skowron J., Udalski A.   +8 more
core   +2 more sources

Rapidly Rotating Lenses: Repeating features in the lightcurves of short period binary microlenses [PDF]

, 2011
Microlensing is most sensitive to binary lenses with relatively large orbital separations, and as such, typical binary microlensing events show little or no orbital motion during the event.
Albrow, Alcock, An, Batista, Beaulieu, Beaulieu, Bennett, Bennett, Bennett, Bennett, Bennett, Bozza, Buchalter, Cherepashchuk, Dominik, Dominik, Dong, Dubath, Duquennoy, Eamonn Kerins, Erdl, Gaudi, Gaudi, Gould, Gould, Gould, Griest, Han, Han, Hwang, Ioka, Kerins, Konno, Kozłowski, Kubas, Liebes, Mao, Mao, Marshall, Matthew T. Penny, Nemiroff, Paczyński, Penny, Poindexter, Raghavan, Rahvar, Rattenbury, Refsdal, Refsdal, Robin, Ryu, Schneider, Shude Mao, Skowron, Smith, Smith, Smith, Smith, Smith, Udalski, Udalski, Witt, Witt, Zheng   +63 more
core   +3 more sources

Combined Analysis of the Binary-Lens Caustic-Crossing Event MACHO 98-SMC-1 [PDF]

, 1999
We fit the data for the binary-lens microlensing event MACHO 98-SMC-1 from 5 different microlensing collaborations and find two distinct solutions characterized by binary separation d and mass ratio q: (d,q)=(0.54,0.50) and (d,q)=(3.65,0.36), where d is ...
A. Bouquet, A. C. Becker, A. Gould, A. J. Drake, A. Kim, A. Milsztajn, A. Tomaney, A. Udalski, A. Vidal‐Madjar, A. W. Rodgers, A. Williams, Afonso C., B. A. Peterson, B. Goldman, B. R. Johnson, B. S. Gaudi, C. Afonso, C. Alard, C. Alcock, C. Coutures, C. Loup, C. Magneville, C. W. Stubbs, D. Alves, D. Graff, D. Hardin, D. L. DePoy, D. Minniti, D. P. Bennett, Dominik M., Dominik M., Dominik M., E. Aubourg, E. Lesquoy, E. Maurice, F. Bauer, F. Couchot, F. Derue, G. Pietrzyński, J. A. R. Caldwell, J. Andersen, J. B. Marquette, J. C. Hamilton, J. de Kat, J. F. Glicenstein, J. Greenhill, J. Haissinski, J. Menzies, J. N. Albert, J. P. Beaulieu, J. Quinn, J. Rich, K. C. Freeman, K. C. Sahu, K. Griest, K. H. Cook, K. Hill, K. R. Pollard, K. Zebruń, L. J. King, L. Prevot, L. Vigroux, M. D. Albrow, M. Dominik, M. Gros, M. J. Lehner, M. Kubiak, M. Moniez, M. R. Pratt, M. Spiro, M. Szymański, N. Palanque‐Delabrouille, N. Regnault, O. Perdereau, P. B. Stetson, P. Bareyre, P. C. Fragile, P. D. Sackett, P. J. Quinn, P. Vermaak, P. Woźniak, R. A. Allsman, R. Ansari, R. Ferlet, R. M. Naber, R. Martin, R. W. Pogge, R. Watson, S. Char, S. H. Rhie, S. Kane, S. L. Marshall, S. Zylberajch, T. Lasserre, T. S. Axelrod, T. Vandehei, Udalski A., Udalski A., W. Sutherland, X. Charlot   +99 more
core   +4 more sources