Journal
PHYSICAL REVIEW D
Volume 87, Issue 2, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.87.024024
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Funding
- Rikkyo University
- Ministry of Education, Culture, Sports, Science and Technology, Japan [21740190, 23654082]
- Grants-in-Aid for Scientific Research [23654082, 21740190] Funding Source: KAKEN
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It is well known that the sum of signed magnifications is invariant for mass lens systems. In this paper, we discuss the signed magnification sums of general spherical lens models, including the singular isothermal sphere, the Schwarzschild lens, and the Ellis wormhole, the last of which is an example of the traversable wormholes of the Morris-Thorne class. We show that the signed magnification sums are a very useful tool to distinguish exotic lens objects. For example, we show that one can distinguish the Ellis wormholes from the Schwarzschild lens with the signed magnification sums. DOI: 10.1103/PhysRevD.87.024024
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