手法を比較

	重力マイクロレンズ	強重力レンズ効果
分野	天文学	天文学
系統	Process / pipeline	Process / pipeline
提唱年	1986	1964
提唱者	Bohdan Paczynski	Sjur Refsdal
種類	Observational detection method	Observational measurement method
原典	Paczynski, B. (1986). Gravitational microlensing by the galactic halo. Astrophysical Journal, 304, 1-5.	Refsdal, S. (1964). On the possibility of determining Hubble's parameter and the masses of galaxies from the gravitational lens effect. Monthly Notices of the Royal Astronomical Society, 128(4), 307-311.
別名	Microlensing, Gravitational Lensing Method	Strong Lensing, Gravitational Lens, Einstein Ring
関連	3	3
概要	Gravitational microlensing is an observational technique that exploits Einstein's prediction that massive objects bend light. When a star or planet passes in front of a distant star from our perspective, its gravity acts as a lens, magnifying and distorting the background star's light. First proposed by Bohdan Paczynski in 1986, this method has discovered hundreds of exoplanets and provides unique sensitivity to low-mass planets and dark matter.	Strong gravitational lensing occurs when massive objects (clusters, galaxies) bend light so strongly that multiple images of distant sources appear, or complete rings (Einstein rings) form. Proposed by Sjur Refsdal in 1964 and first observed in 0957+561 in 1979, strong lensing provides direct measurements of lens masses and cosmic distances independent of the distance ladder.