Zobrazeno 1 - 10
of 51
pro vyhledávání: '"Kyu-Hyun Chae"'
Autor:
Kyu-Hyun Chae
Publikováno v:
The Astrophysical Journal, Vol 972, Iss 2, p 186 (2024)
Low-acceleration gravitational anomaly is investigated with a new method of exploiting the normalized velocity profile $\tilde{v}\equiv {v}_{p}/{v}_{c}$ of wide binary stars as a function of the normalized sky-projected radius s / r _M , where v _p i
Externí odkaz:
https://doaj.org/article/e67c8f16497147b6953b6af72a38b88f
Autor:
Kyu-Hyun Chae
Publikováno v:
The Astrophysical Journal, Vol 966, Iss 2, p 244 (2024)
Externí odkaz:
https://doaj.org/article/c55de3d13f3a424b986f310c74a8267c
Autor:
Kyu-Hyun Chae
Publikováno v:
The Astrophysical Journal, Vol 960, Iss 2, p 114 (2024)
It is found that Gaia Data Release 3 binary stars selected with stringent requirements on astrometric measurements and radial velocities naturally satisfy Newtonian dynamics without hidden close companions when the projected separation s ≲ 2 kau, s
Externí odkaz:
https://doaj.org/article/e47356d70bf44a0c82167f00555177db
Autor:
Kyu-Hyun Chae
Publikováno v:
The Astrophysical Journal, Vol 956, Iss 1, p 69 (2023)
Externí odkaz:
https://doaj.org/article/27cc50475b5b40558e78c1112cd196b5
Autor:
Kyu-Hyun Chae
Publikováno v:
The Astrophysical Journal, Vol 952, Iss 2, p 128 (2023)
A gravitational anomaly is found at weak gravitational acceleration g _N ≲ 10 ^−9 m s ^−2 from analyses of the dynamics of wide binary stars selected from the Gaia DR3 database that have accurate distances, proper motions, and reliably inferred
Externí odkaz:
https://doaj.org/article/0966dd7a2e7c4ac68328910d85a8bc31
The strong equivalence principle is violated by gravity theories of Milgromian dynamics (MOND) through the action of the external field effect. We test two different Lagrangian theories AQUAL and QUMOND based on their numerical solutions of the exter
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::982d5d703f68624a616db47ebc9bfb6f
Autor:
Kyu-Hyun Chae
The missing gravity in galaxies requires dark matter, or alternatively a modification of gravity or inertia. These theoretical possibilities of fundamental importance may be distinguished by the statistical relation between the observed centripetal a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ce15a6bfbc6977226c9240fa74fbf9b2
Autor:
Kyu-Hyun Chae, Mordehai Milgrom
In MOND (modified Newtonian dynamics)-based theories the strong equivalence principle is generically broken in an idiosyncratic manner, manifested in the action of an "external field effect (EFE)". The internal dynamics in a self-gravitating system i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0008b7e3935143503de798413c84f6ef
Theories of modified gravity generically violate the strong equivalence principle, so that the internal dynamics of a self-gravitating system in free fall depends on the strength of the external gravitational field (the external field effect). We fit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::789292a876d2b923ac88b76452834f77
http://arxiv.org/abs/2109.04745
http://arxiv.org/abs/2109.04745
Autor:
Stacy S. McGaugh, Federico Lelli, Pengfei Li, Kyu-Hyun Chae, Harry Desmond, James M. Schombert
The strong equivalence principle (SEP) distinguishes General Relativity from other viable theories of gravity. The SEP demands that the internal dynamics of a self-gravitating system under free-fall in an external gravitational field should not depen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7d1bf16607e7268d2d87d3c441a503a9
http://arxiv.org/abs/2009.11525
http://arxiv.org/abs/2009.11525