Results 61 to 70 of about 10,480 (204)

Microlensing induced absorption line variability

, 2002
Gravitational microlensing has proven to be a powerful probe of both the structure at the heart of quasars and the mass function of compact objects in foreground lenses. This paper examines the potential of gravitational microlensing in probing the scale
Alcock, Corrigan, Courbin, Elmegreen, Garrett, Geraint F. Lewis, Irwin, Jauncy, Jin, Kayser, Kochanek, Koopmans, Lewis, Lewis, Lewis, Lewis, Lewis, Lidman, Lovell, Nair, Oshima, Paczyński, R. A. Ibata, Schechter, Wambsganss, Wambsganss, Wiklind, Wiklind, Winn, Wyithe, Wyithe, Wyithe   +31 more
core   +1 more source

Unambiguous quasar microlensing [PDF]

, 1998
Microlensing studies of quasars can reveal dark matter lumps over a broad mass spectrum; we highlight the importance of monitoring quasars which are seen through the halos of low-redshift galaxies.
Alcock, Alcock, Baganoff, Boyle, Canizares, Carr, Dalcanton, Draine, Fiedler, Gerhard, Gott, Hawkins, Hawkins, Henriksen, Irwin, Mark A. Walker, Paczyński, Press, Refsdal, Romani, Sahu, Schild, Schmidt, Schneider, Tadros, Vietri, Walker, Walker, Wambsganss, Zhao   +29 more
core   +2 more sources

Dark Matter: A Primer

Advances in Astronomy, Volume 2011, Issue 1, 2011., 2011
Dark matter is one of the greatest unsolved mysteries in cosmology at the present time. About 80% of the Universe′s gravitating matter is nonluminous, and its nature and distribution are for the most part unknown. In this paper, we will outline the history, astrophysical evidence, candidates, and detection methods of dark matter, with the goal to give ...
Katherine Garrett, Gintaras Dūda, David Merritt   +2 more
wiley   +1 more source

Can gravitational waves be detected in quasar microlensing? [PDF]

, 2000
Studies of the lensed quasar ${\rm Q}0957+561 {\rm A,B}$ have shown evidence for microlensing in the brightness history of the quasar images. It had been suggested that a frequency offset between the brightness fluctuations in each of the two images ...
Larson, Shane L., Schild, Rudolph
core   +1 more source

The Microlensing Planet Finder: Completing the Census of Extrasolar Planets in the Milky Way

, 2004
The Microlensing Planet Finder (MPF) is a proposed Discovery mission that will complete the first census of extrasolar planets with sensitivity to planets like those in our own solar system.
, Andrew Gould, Andrzej Udalski, B. Scott Gaudi, Bernard J. Rauscher, Bohdan Paczynski, Dante Minniti, David P. Bennett, Domenick Tenerelli, Edward Cheng, Ian Bond, John C. Mather, Jonathan I. Lunine, Kailash Sahu, Kim Griest, Malcolm Niedner, Matthew A. Greenhouse, Neville Woolf, Peter Garnavich, Phil Yock, R. M. Rich, Randy A. Kimble, Ronald Gilliland, Scott Friedman, Stanton Peale   +24 more
core   +1 more source

KMT-2022-BLG-1818Lb,c: A Cold Super-Jupiter with a Saturn Sibling

The Astronomical Journal
We present the discovery and analysis of the sixth microlensing two-planet system, KMT-2022-BLG-1818Lb,c, detected by a follow-up program targeting high-magnification events.
Hongyu Li, Jiyuan Zhang, Cheongho Han, Weicheng Zang, Youn Kil Jung, Andrzej Udalski, Takahiro Sumi, Hongjing Yang, Renkun Kuang, Shude Mao, (Leading Authors), Michael D. Albrow, Sun-Ju Chung, Andrew Gould, Kyu- Ha Hwang, Yoon-Hyun Ryu, In-Gu Shin, Yossi Shvartzvald, 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), Berto Monard, Yunyi Tang, Subo Dong, Zhuokai Liu, Grant Christie, Jennie McCormick, Tim Natusch, Qiyue Qian, Dan Maoz, Wei Zhu, (The MAP and µFUN Follow-up Team), Przemek Mróz, Michał K. Szymański, Jan Skowron, Radoslaw Poleski, Igor Soszyński, Paweł Pietrukowicz, Szymon Kozłowski, Krzysztof A. Rybicki, Patryk Iwanek, Krzysztof Ulaczyk, Marcin Wrona, Mariusz Gromadzki, Mateusz J. Mróz, (The OGLE Collaboration), Fumio Abe, Ken Bando, David P. Bennett, Aparna Bhattacharya, Ian A. Bond, Akihiko Fukui, Ryusei Hamada, Shunya Hamada, Naoto Hamasak, Yuki Hirao, Stela Ishitani Silva, Naoki Koshimoto, Yutaka Matsubara, Shota Miyazaki, Yasushi Muraki, Tutumi Nagai, Kansuke Nunota, Greg Olmschenk, Clément Ranc, Nicholas J. Rattenbury, Yuki Satoh, Daisuke Suzuki, Sean Terry, Paul J. Tristram, Aikaterini Vandorou, Hibiki Yama, (The MOA Collaboration)   +79 more
doaj   +1 more source

Discerning Parallax Amplitude in Astrometric Microlensing

The Astronomical Journal, 2023
Gravitational microlensing is a powerful method for discovering isolated stellar-mass black holes (ISMBHs). These objects make long-duration microlensing events.
Sedighe Sajadian, Arya Mahmoudzadeh, Setareh Moein   +2 more
doaj   +1 more source

Astrophysical implications of gravitational microlensing of gravitational waves [PDF]

Astronomy & Astrophysics, 2001
Astrophysical implications of gravitational microlensing of gravitational waves emitted by rotating neutron stars (NSs) are investigated. In particular, attention is focused on the following situations: i) NSs in the galactic bulge lensed by a central black hole of $2.6\times 10^6 M_{\odot}$ or by stars and MACHOs distributed in the galactic bulge ...
DE PAOLIS, Francesco, INGROSSO, Gabriele, NUCITA, Achille   +2 more
openaire   +2 more sources

Systematic KMTNet Planetary Anomaly Search. XII. Complete Sample of 2017 Subprime Field Planets

The Astronomical Journal
We report the analysis of four unambiguous planets and one possible planet from the subprime fields (Γ ≤ 1 hr ^−1 ) of the 2017 Korea Microlensing Telescope Network (KMTNet) microlensing survey, to complete the KMTNet AnomalyFinder planetary sample for ...
Yuqian Gui, Weicheng Zang, Ruocheng Zhai, Yoon-Hyun Ryu, Andrzej Udalski, Hongjing Yang, Cheongho Han, Shude Mao, Leading Authors, Michael D. Albrow, Sun-Ju Chung, Andrew Gould, Kyu-Ha Hwang, Youn Kil Jung, In-Gu Shin, Yossi Shvartzvald, 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, Przemek Mróz, Michał K. Szymański, Jan Skowron, Radosław Poleski, Igor Soszyński, Paweł Pietrukowicz, Szymon Kozłowski, Krzysztof Ulaczyk, Krzysztof A. Rybicki, Patryk Iwanek, Marcin Wrona, Mariusz Gromadzki, The OGLE Collaboration, Hanyue Wang, Jiyuan Zhang, Renkun Kuang, Qiyue Qian, Wei Zhu, The MAP Collaboration   +45 more
doaj   +1 more source

Quasar Microlensing: when compact masses mimic smooth matter

, 2006
The magnification induced by gravitational microlensing is sensitive to the size of a source relative to the Einstein radius, the natural microlensing scale length.
Geraint F. Lewis, Kayser R., Lewis G. F., Refsdal S., Refsdal S., Refsdal S., Rodrigo Gil‐Merino   +6 more
core   +1 more source