천문학회지 (Journal of The Korean Astronomical Society)
- 제27권2호
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- Pages.103-117
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- 1994
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- 1225-4614(pISSN)
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- 2288-890X(eISSN)
STATISTICAL PROPERTIES OF GRAVITATIONAL LENSING IN COSMOLOGICAL MODELS WITH COSMOLOGICAL CONSTANT
- LEE HYUN-A (Department of Astronomy and Meteorolgy, Kyungpook National University) ;
- PARK MYEONG-GU (Department of Astronomy and Meteorolgy, Kyungpook National University)
- 발행 : 1994.10.01
초록
To extend the work of Gott, Park, and Lee (1989), statistical properties of gravitational lensing in a wide variety of cosmological models involving non-zero cosmological constant is investigated, using the redshifts of both lens and source and observed angular separation of images for gravitational lens systems. We assume singular isothermal sphere as lensing galaxy in homogenous and isotropic FriedmannLemaitre-Robertson- Walker universe, Schechter luminosity function, standard angular diameter distance formula and other galaxy parameters used in Fukugita and Turner (1991). To find the most adequate flat cosmological model and put a limit on the value of dimensionless cosmological constant