Results 111 to 120 of about 15,221 (204)

Prediction of Astrometric and Timing Microlensing Events with Pulsars by ATNF Catalog and Gaia DR3

The Astrophysical Journal
Determining the mass of neutron stars is crucial for understanding their formation, evolution, and interior structure. Currently, only a few dozen neutron stars have had their masses measured, and most of them belong to binary systems. However, there are
Xu Lu, Yi Xie
doaj   +1 more source

Fractal Algorithm for Multiple-lens Analyses

The Astrophysical Journal
A microlensing exoplanet search is a unique method for finding planets orbiting distant stars. However, in the past, the method used to analyze microlensing data could not deal with complex lens systems. The number of lenses was limited to three or less.
F. Abe
doaj   +1 more source

Search for Sub-Solar Mass Binaries with Einstein Telescope and Cosmic Explorer. [PDF]

Entropy (Basel), 2022
Nunes RC.
europepmc   +1 more source

JWST’s PEARLS: A Candidate Massive Binary Star System in a Lensed Galaxy at Redshift 0.94

The Astrophysical Journal
Massive stars at cosmological distances can be individually detected during transient microlensing events, when gravitational lensing magnifications may exceed μ  ≈ 1000.
Hayley Williams, Patrick L. Kelly, Emmanouil Zapartas, Rogier A. Windhorst, Christopher J. Conselice, Seth H. Cohen, Birendra Dhanasingham, José M. Diego, Alexei V. Filippenko, Brenda L. Frye, Benne W. Holwerda, Terry J. Jones, Anton M. Koekemoer, Ashish Kumar Meena, Massimo Ricotti, Clayton D. Robertson, Payaswini Saikia, Bangzheng Sun, S. P. Willner, Haojing Yan, Adi Zitrin   +20 more
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Jupiter-like planets might be common in a low-density environment. [PDF]

Nat Commun, 2023
Gratton R, Mesa D, Bonavita M, Zurlo A, Marino S, Kervella P, Desidera S, D'Orazi V, Rigliaco E.   +8 more
europepmc   +1 more source

microJAX: A Differentiable Framework for Microlensing Modeling with GPU-accelerated Image-centered Ray Shooting

The Astrophysical Journal
We introduce microJAX , the first fully differentiable implementation of the image-centered ray shooting algorithm for gravitational microlensing. Built on JAX and its XLA just-in-time compiler, microJAX exploits GPU parallelism while providing exact ...
Shota Miyazaki, Hajime Kawahara
doaj   +1 more source

Searching for Free-floating Planets with TESS: Results from Sectors 61–65

The Astronomical Journal
Though free-floating planets (FFPs) may outpopulate their bound counterparts in the terrestrial-mass range, they remain one of the least explored exoplanet demographics.
Michelle Kunimoto, William DeRocco, Nolan Smyth, Steve Bryson, B. Scott Gaudi   +4 more
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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
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Primordial black holes could hold the key to dark matter mysteries. [PDF]

Proc Natl Acad Sci U S A, 2022
Waldrop MM.
europepmc   +1 more source

Atmospheric characterization of terrestrial exoplanets in the mid-infrared: biosignatures, habitability, and diversity. [PDF]

Exp Astron (Dordr), 2022
Quanz SP, Absil O, Benz W, Bonfils X, Berger JP, Defrère D, van Dishoeck E, Ehrenreich D, Fortney J, Glauser A, Grenfell JL, Janson M, Kraus S, Krause O, Labadie L, Lacour S, Line M, Linz H, Loicq J, Miguel Y, Pallé E, Queloz D, Rauer H, Ribas I, Rugheimer S, Selsis F, Snellen I, Sozzetti A, Stapelfeldt KR, Udry S, Wyatt M.   +30 more
europepmc   +1 more source