Results 11 to 20 of about 130 (112)

KMT-2022-BLG-0086: Another Binary-lens Binary-source Microlensing Event

The Astronomical Journal
We present the analysis of a microlensing event KMT-2022-BLG-0086 of which the overall light curve is not described by a binary-lens single-source (2L1S) model, which suggests the existence of an extra lens or an extra source.
Sun-Ju Chung, Kyu-Ha Hwang, Jennifer C. Yee, Andrew Gould, Ian A. Bond, Hongjing Yang, (Leading Authors), Michael D. Albrow, Youn Kil Jung, Cheongho Han, Yoon-Hyun Ryu, In-Gu Shin, Yossi Shvartzvald, 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), Fumio Abe, David P. Bennett, Aparna Bhattacharya, Akihiko Fukui, Ryusei Hamada, Yuki Hirao, Stela Ishitani Silva, Naoki Koshimoto, Shota Miyazaki, Yasushi Muraki, Tutumi Nagai, Kansuke Nunota, Greg Olmschenk, Clément Ranc, Nicholas J. Rattenbury, Yuki Satoh, Takahiro Sumi, Daisuke Suzuki, Sean K. Terry, Paul J. Tristram, Aikaterini Vandorou, Hibiki Yama, (The MOA Collaboration)   +45 more
doaj   +3 more sources

Four-body Gravitational Microlensing Events Involving Both a Binary Lens and a Binary Source

The Astrophysical Journal
We present detailed analyses of three anomalous microlensing events—KMT-2021-BLG-0209, KMT-2021-BLG-0901, and OGLE-2025-BLG-0356—identified from a systematic reexamination of KMTNet light curves for which previous modeling attempts failed or left ...
Cheongho Han, Chung-Uk Lee, Andrzej Udalski, (Leading Authors), Michael D. Albrow, Sun-Ju Chung, Andrew Gould, Youn Kil Jung, Kyu-Ha Hwang, Yoon-Hyun Ryu, Yossi Shvartzvald, In-Gu Shin, Jennifer C. Yee, Weicheng Zang, Hongjing Yang, Doeon Kim, Dong-Jin Kim, Seung-Lee Kim, Dong-Joo Lee, Sang-Mok Cha, Yongseok Lee, Byeong-Gon Park, Richard W. Pogge, Przemek Mróz, (KMTNet Collaboration), Michał K. Szymański, Jan Skowron, Radosław Poleski, Igor Soszyński, Paweł Pietrukowicz, Szymon Kozłowski, Krzysztof A. Rybicki, Patryk Iwanek, Krzysztof Ulaczyk, Marcin Wrona, Mariusz Gromadzki, Mateusz J. Mróz, (The OGLE Team)   +37 more
doaj   +2 more sources

Binary Source Microlensing Event OGLE-2016-BLG-0733: Interpretation of a Long-term Asymmetric Perturbation [PDF]

The Astronomical Journal, 2017
Abstract In the process of analyzing an observed light curve, one often confronts various scenarios that can mimic the planetary signals causing difficulties in the accurate interpretation of the lens system. In this paper, we present the analysis of the microlensing event OGLE-2016-BLG-0733.
Y. K. Jung, A. Udalski, J. C. Yee, T. Sumi, A. Gould, C. Han, M. D. Albrow, C.-U. Lee, S.-L. Kim, S.-J. Chung, K.-H. Hwang, Y.-H. Ryu, I.-G. Shin, W. Zhu, S.-M. Cha, D.-J. Kim, Y. Lee, B.-G. Park, R. W. Pogge, P. Pietrukowicz, S. Kozłowski, R. Poleski, J. Skowron, P. Mróz, M. K. Szymański, I. Soszyński, M. Pawlak, K. Ulaczyk, F. Abe, D. P. Bennett, R. Barry, I. A. Bond, Y. Asakura, A. Bhattacharya, M. Donachie, M. Freeman, A. Fukui, Y. Hirao, Y. Itow, N. Koshimoto, M. C. A. Li, C. H. Ling, K. Masuda, Y. Matsubara, Y. Muraki, M. Nagakane, H. Oyokawa, N. J. Rattenbury, A. Sharan, D. J. Sullivan, D. Suzuki, P. J. Tristram, T. Yamada, T. Yamada, A. Yonehara   +54 more
openaire   +3 more sources

Possibility of Detection of Exomoons with Inclined Orbits Orbiting Pulsar Planets Using the Time‐of‐Arrival Analysis

Advances in Astronomy, Volume 2014, Issue 1, 2014., 2014
The perturbation caused by planet‐moon binarity on the time‐of‐arrival (TOA) signal of a pulsar with an orbiting planet is derived for the case of the orbit of the planet‐moon system inclined of an angle α with respect to the plane of the orbit of the planet‐moon barycenter around the pulsar.
Antonio Pasqua, Khudhair A. Assaf, Gary Wegner   +2 more
wiley   +1 more source

Possible Gravitational Microlensing Events in the Optical Lightcurve of Active Galaxy S5 0716+714

The Astrophysical Journal, 2023
A well-known active galaxy of the blazar type, S5 0716+714, is characterized by a particularly high-variability duty cycle on short timescales at optical frequencies.
D. Ł. Król, Ł. Stawarz, J. Krzesinski, C. C. Cheung   +3 more
doaj   +1 more source

Dark Matter Halos from the Inside Out

Advances in Astronomy, Volume 2011, Issue 1, 2011., 2011
The balance of evidence indicates that individual galaxies and groups or clusters of galaxies are embedded in enormous distributions of cold, weakly interacting dark matter. These dark matter “halos” provide the scaffolding for all luminous structures in the universe, and their properties comprise an essential part of the current cosmological model.
James E. Taylor, Rob Ivison
wiley   +1 more source

Automated Detection of Short Optical Transients of Astrophysical Origin in Real Time

Advances in Astronomy, Volume 2010, Issue 1, 2010., 2010
The detection of short optical transients of astrophysical origin in real time is an important task for existing robotic telescopes. The faster a new optical transient is detected, the earlier follow‐up observations can be started. The sooner the object is identified, the more data can be collected before the source fades away, particularly in the most
Marcin Sokołowski, Katarzyna Małek, Lech W. Piotrowski, Grzegorz Wrochna, Taro Kotani   +4 more
wiley   +1 more source

Robotic Astronomy with the Faulkes Telescopes and Las Cumbres Observatory Global Telescope

Advances in Astronomy, Volume 2010, Issue 1, 2010., 2010
We present results from ongoing science projects conducted by members of the Faulkes Telescope (FT) team and Las Cumbres Observatory Global Telescope (LCOGT). Many of these projects incorporate observations carried out and analysed by FT users, comprising amateur astronomers and schools.
Fraser Lewis, Rachel Street, Paul Roche, Vanessa Stroud, David M. Russell, Alberto J. Castro-Tirado   +5 more
wiley   +1 more source

RTS2—The Remote Telescope System

Advances in Astronomy, Volume 2010, Issue 1, 2010., 2010
RTS2 is an open source observatory manager. It was written from scratch in the C++ language, with portability and modularity in mind. Its driving requirements originated from quick follow‐ups of Gamma Ray Bursts. After some years of development it is now used to carry tasks it was originally not intended to carry.
Petr Kubánek, Lorraine Hanlon
wiley   +1 more source

DISTINGUISHING BETWEEN PLANETARY AND BINARY INTERPRETATIONS OF MICROLENSING CENTRAL PERTURBATIONS UNDER THE SEVERE FINITE-SOURCE EFFECT [PDF]

The Astrophysical Journal, 2008
4 pages, 3 ...
openaire   +2 more sources