Hubble constant, lensing, and time delay in relativistic Modified Newtonian Dynamics

Please use this identifier to cite or link to this item: https://ir.lib.ncu.edu.tw/handle/987654321/101008

Title:	Hubble constant, lensing, and time delay in relativistic Modified Newtonian Dynamics
Authors:	高仲明;Tian, Yong;Ko, Chung-Ming;Chiu, Mu-Chen
Contributors:	理學院天文研究所
Keywords:	ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;COSMOLOGICAL MODELS;Cosmology;Dynamic tests;Dynamical systems;Dynamics;GALAXIES;GRAVITATION;GRAVITATIONAL LENSES;Hubble constant;HUBBLE EFFECT;MISSING MASS;NEUTRINOS;NONLUMINOUS MATTER;QUASARS;RELATIVISTIC RANGE;RELICT RADIATION;SCALARS;TIME DELAY;VECTORS
Date:	2013-06-20
Issue Date:	2026-04-21 14:20:51 (UTC+8)
Publisher:	IOP Publishing Ltd.;United States
Abstract:	摘要： The time delay in galaxy gravitational lensing systems has been used to determine the value of the Hubble constant. As with other dynamical phenomena on the galaxy scale, dark matter is often invoked in gravitational lensing to account for the "missing mass" (the apparent discrepancy between the dynamical mass and the luminous mass). Alternatively, modified gravity can be used to explain the discrepancy. In this paper, we adopt the tensor-vector-scalar gravity (TeVe S), a relativistic version of Modified Newtonian Dynamics, to study gravitational lensing phenomena and derive the formulae needed to evaluate the Hubble constant. We test our method on quasar lensing by elliptical galaxies in the literature. We focus on double-image systems with time delay measurement. Three candidates are suitable for our study: HE 2149-2745, FBQ J0951+2635, and SBS 0909+532. The Hubble constant obtained is consistent with the value used to fit the cosmic microwave background result in a neutrino cosmological model. 出版者： United States 出版日期： 2013-06-20 出處： The Astrophysical journal, 2013-06, Vol.770 (2), p.154-7 資源來源： Institute of Physics Journals 識別號： ISSN: 0004-637X 識別號： ISSN: 1538-4357 識別號： EISSN: 1538-4357 識別號： DOI: 10.1088/0004-637X/770/2/154
Appears in Collections:	[Graduate Institute of Astronomy] journal & Dissertation

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