On the Possibility of Determining Hubble's Parameter and the Masses of Galaxies from the Gravitational Lens Effect

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1964
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Abstract
The gravitational lens effect is applied to a supernova lying far behind and close to the line of sight through a distant galaxy. The light from the supernova may follow two different paths to the observer, and the difference Δ t in the time of light travel for these two paths can amount to a couple of months or more, and may be measurable. It is shown that Hubble's parameter and the mass of the galaxy can be expressed by Δ t , the red-shifts of the supernova and the galaxy, the luminosities of the supernova “images” and the angle between them. The possibility of observing the phenomenon is discussed.
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Authors S. Refsdal
Journal monthly notices of the royal astronomical society
Year 1964
DOI
10.1093/mnras/128.4.307
URL
https://academic.oup.com/mnras/article-pdf/128/4/307/8073517/mnras128-0307.pdf
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