Journal
MODERN PHYSICS LETTERS A
Volume 32, Issue 34, Pages -Publisher
WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S0217732317300312
Keywords
Gravitation; gravitational lensing; exotic matter
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Funding
- Japan Society for the Promotion of Science [26400262, 17K05431]
- Ministry of Education, Culture, Sports, Science, and Technology [15H00772, 17H06359]
- Grants-in-Aid for Scientific Research [17K05431, 26400262, 17H06357, 15H00772] Funding Source: KAKEN
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This paper reviews a phenomenological approach to the gravitational lensing by exotic objects such as the Ellis wormhole lens, where the exotic lens objects may follow a non-standard form of the equation of state or may obey a modified gravity theory. A gravitational lens model is proposed in the inverse powers of the distance, such that the Schwarzschild lens and exotic lenses can be described in a unified manner as a one parameter family. As observational implications, the magnification, shear, photo-centroid motion and time delay in this lens model are discussed.
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