Towards a New Proposal for the Time Delay in Gravitational Lensing
Dipartimento di Fisica, Università di Genova, via Dodecaneso 33, I-16146 Genova, Italy
Author to whom correspondence should be addressed.
I.N.F.N.—Sezione di Genova.
Received: 12 September 2017 / Revised: 12 September 2017 / Accepted: 24 September 2017 / Published: 25 September 2017
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One application of the Cosmological Gravitational Lensing in General Relativity is the measurement of the Hubble constant
using the time delay
between multiple images of lensed quasars. This method has already been applied, obtaining a value of
compatible with that obtained from the SNe 1A, but non-compatible with that obtained studying the anisotropies of the CMB. This difference could be a statistical fluctuation or an indication of new physics beyond the Standard Model of Cosmology, so it desirable to improve the precision of the measurements. At the current technological capabilities it is possible to obtain
to a percent level uncertainty, so a more accurate theoretical model could be necessary in order to increase the precision about the determination of
. The actual formula which relates
is approximated; in this paper we expose a proposal to go beyond the previous analysis and, within the context of a new model, we obtain a more precise formula than that present in the literature.
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MDPI and ACS Style
Alchera, N.; Bonici, M.; Maggiore, N. Towards a New Proposal for the Time Delay in Gravitational Lensing. Symmetry 2017, 9, 202.
Alchera N, Bonici M, Maggiore N. Towards a New Proposal for the Time Delay in Gravitational Lensing. Symmetry. 2017; 9(10):202.
Alchera, Nicola; Bonici, Marco; Maggiore, Nicola. 2017. "Towards a New Proposal for the Time Delay in Gravitational Lensing." Symmetry 9, no. 10: 202.
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