Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Andrea Ghez"'
Publikováno v:
The Astronomical Journal, Vol 167, Iss 1, p 41 (2023)
The neighborhood of the Galactic black hole boasts a plethora of extended interstellar gas and dust features, as well as populations of compact (unresolved or marginally resolved) features such as the G objects. Most are well manifested in the infrar
Externí odkaz:
https://doaj.org/article/a37e046b4274405eba3f512ee419fdf3
Autor:
Clifford M. Will, Smadar Naoz, Aurélien Hees, Alexandria Tucker, Eric Zhang, Tuan Do, Andrea Ghez
Publikováno v:
The Astrophysical Journal, Vol 959, Iss 1, p 58 (2023)
We use 23 yr of astrometric and radial velocity data on the orbit of the star S0-2 to constrain a hypothetical intermediate-mass black hole orbiting the massive black hole Sgr A* at the Galactic center. The data place upper limits on variations of th
Externí odkaz:
https://doaj.org/article/3a870f00459f4c2dad9fbffbeb5f0d7e
Publikováno v:
The Astrophysical Journal, Vol 955, Iss 2, p 117 (2023)
Infrared observations of stellar orbits about Sgr A* probe the mass distribution in the inner parsec of the Galaxy and provide definitive evidence for the existence of a massive black hole. However, the infrared astrometry is relative and is tied to
Externí odkaz:
https://doaj.org/article/79b7fbc7db1244c4ad758168b442f2ca
Autor:
Matthew S. R. Freeman, Jessica R. Lu, Jim Lyke, Abhimat Gautam, Renate Kupke, Andrea Ghez, Shoko Sakai, Jay Anderson, Andrea Bellini
Publikováno v:
The Astronomical Journal, Vol 166, Iss 3, p 125 (2023)
The astrometric precision and accuracy of an imaging camera is often limited by geometric optical distortions. These must be calibrated and removed to measure precise proper motions, orbits, and gravitationally lensed positions of interesting astrono
Externí odkaz:
https://doaj.org/article/046b1e21e4d54c46b0d8b78d29447718
Autor:
Devin S. Chu, Tuan Do, Andrea Ghez, Abhimat K. Gautam, Anna Ciurlo, Kelly Kosmo O’neil, Matthew W. Hosek Jr., Aurélien Hees, Smadar Naoz, Shoko Sakai, Jessica R. Lu, Zhuo Chen, Rory O. Bentley, Eric E. Becklin, Keith Matthews
Publikováno v:
The Astrophysical Journal, Vol 948, Iss 2, p 94 (2023)
We present the results of the first systematic search for spectroscopic binaries within the central 2 × 3 arcsec ^2 around the supermassive black hole at the center of the Milky Way galaxy. This survey is based primarily on over a decade of adaptive
Externí odkaz:
https://doaj.org/article/fd2aca98aa76471da6ac7131a295a518
Autor:
Devin Chu, Wenmeng Ning, Tuan Do, Andrea Ghez, Peter Wizinowich, Jessica Lu, Abhimat K. Gautam, Anna Ciurlo, Sean Terry, Jim E. Lyke, Jacques R. Delorme
Publikováno v:
Adaptive Optics Systems VIII.
Autor:
Andrea Ghez
Publikováno v:
Blucher Physics Proceedings.
Autor:
Peter Wizinowich, Jessica Lu, Sylvain Cetre, Jason C. Y. Chin, Carlos M. Correia, Jacques R. Delorme, Luke Gers, Scott J. Lilley, Jim E. Lyke, Eduardo Marin, Sam Ragland, Paul Richards, Avinash Surendran, Ed Wetherell, Geoff Chih-Fan Chen, Devin Chu, Tuan Do, Chris Fassnacht, Matthew Freeman, Abhimat K. Gautam, Andrea Ghez, Lisa Hunter, Tucker A. Jones, Michael Liu, Dimitri Mawet, Claire Max, Mark Morris, Mark Phillips, Jean-Baptiste Ruffio, Nils-Erik Rundquist, Sanchit Sabhlok, Sean Terry, Tommaso Treu, Shelley Wright
Publikováno v:
Adaptive Optics Systems VIII.
Autor:
Jessica Lu, Sean Terry, Paolo Turri, Anna Ciurlo, Abhimat Gautam, Tuan Do, Andrea Ghez, Matthew Hosek, Gunther Witzel
Publikováno v:
Adaptive Optics Systems VIII.
Autor:
Ilaria Martinelli, Jessica Mandrioli, Andrea Ghezzi, Elisabetta Zucchi, Giulia Gianferrari, Cecilia Simonini, Francesco Cavallieri, Franco Valzania
Publikováno v:
Neural Regeneration Research, Vol 20, Iss 1, Pp 130-138 (2025)
Amyotrophic lateral sclerosis (ALS) is a neuromuscular condition resulting from the progressive degeneration of motor neurons in the cortex, brainstem, and spinal cord. While the typical clinical phenotype of ALS involves both upper and lower motor n
Externí odkaz:
https://doaj.org/article/0208827a07b44cb9bfdaaf5a41d406a3