천문학회지 (Journal of The Korean Astronomical Society)
- 제29권1호
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- Pages.1-8
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- 1996
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- 1225-4614(pISSN)
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- 2288-890X(eISSN)
CAUSTICS AND GRAVITATIONAL FOCUSING
초록
When we follow the lines of the trajectory of photons which intersect the circle, the circle may suffer some deformation as approaching to the observer. We consider an infinitesimal light bundle suffering gravitational bending. We examine the deformation of the deflected light bundle due to the gravitational lens. The size of the deformation is expressed in terms of the focal length of the gravitational lens.
키워드