Quasar Lensing

Quasar Lensing
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类星体透镜

DOI:
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发表时间:
2002
期刊:
影响因子:
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通讯作者:
P. Schechter
P. Schechter
中科院分区:
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文献类型:
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作者:
F. Courbin;P. Saha;P. Schechter

文献摘要

被引文献

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大质量结构,如星系,对背景源起着强大的引力透镜的作用。当背景源是类星体时,可以看到几个透镜图像,它们是同一物体的放大或缩小版本。对图像构型和图像之间的“时间延迟”的测量的详细研究得出了哈勃参数H0的估计。我们简单地描述了强透镜现象,并回顾了该领域的最新进展,包括主透镜星系中恒星的微透镜现象。
Massive structures, such as galaxies, act as strong gravitational lenses on background sources. When the background source is a quasar, several lensed images are seen, as magnified or de-magnified versions of the same object. The detailed study of the image configuration and the measurement of “time-delays” between the images yield estimates of the Hubble parameter H0. We describe in a simple way the phenomenon of strong lensing and review recent progress made in the field, including microlensing by stars in the main lensing galaxy.