Hubble Constant, Lensing, and Time Delay in Relativistic MOND

Time delay in galaxy gravitational lensing systems has been used to determine the value of Hubble constant. As in other dynamical phenomena at the scale of galaxy, dark matter is often invoked in gravitational lensing to account for the "missing mass" (the apparent discrepancy between the...

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Bibliographic Details
Published in:arXiv.org 2013-10
Main Authors: Tian, Yong, Chung-Ming, Ko, Mu-Chen, Chiu
Format: Article
Language:English
Subjects:
Astronomical models
Big Bang theory
Cosmology
Dark matter
Elliptical galaxies
Expanding universe theory
Gravitation
Gravitational lenses
Hubble constant
Missing mass (astrophysics)
Neutrinos
Quasars
Relativism
Relativistic effects
Tensors
Time lag
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Summary:Time delay in galaxy gravitational lensing systems has been used to determine the value of Hubble constant. As in other dynamical phenomena at the scale of galaxy, 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 (TeVeS), a relativistic version of MOdified Newtonian Dynamics (MOND), 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 in fitting the CMB result in neutrino cosmological model.
ISSN:2331-8422
DOI:10.48550/arxiv.1204.6359