Gravitational lenses
Gravitational lenses
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作者：
C. Alcock
最近天文学最令人兴奋的发展之一是发现了类星体的多重成像。这种现象有三个被证实的例子1· 3，在一个例子中，负责多重成像的引力透镜已经被探测到4·它是一个靠近星系团中心的大型椭圆星系。
ONE of the most exciting recent developments in astronomy has been the discovery of multiple imaging of quasars. There are three confirmed examples1• 3 of this phenomenon, and in one case, the gravitational lens responsible for the multiple imaging has been detected4• It is a large elliptical galaxy near the centre of a cluster of galaxies.