(亚)毫米干涉阵观测的星系强引力透镜研究进展

Research Progress of Galaxy-Galaxy Strong Lensing Observed by(Sub)millimeter Interferometer

近年来,强引力透镜的样本选择和研究从此前主要局限于光学-红外波段,拓展到毫米/亚毫米波段。目前大约有200个强引力透镜系统在毫米/亚毫米波段的广域河外观测中被发现。ALMA,NOEMA,SMA等射电干涉阵提供的高灵敏度、高分辨率的观测,结合强引力透镜放大作用,将高红移星系的研究带入一个新时代。主要从观测样本、建模方法、科学应用等方面介绍了当下(亚)毫米波段星系-星系强引力透镜的研究现状。

The magnification effect provided by gravitational lensing overcomes the limitations of current observation instruments,allowing researchers to study faint objects at high redshift(z≈4).Over the last decades,the sample of strong lenses has been mostly confined to optical bands.With the advent of(sub)millimeter wide field extragalactic surveys,about 200 strong lenses have been discovered in(sub)millimeter bands.Observations with high resolution and sensitivity from ALMA,NOEMA,and SMA,coupled with the flux boost from strong lensing,provide new windows to study galaxies at high redshift.Many works have investigated topics such as star formation,interstellar medium,and dynamic properties.The main objective of this paper is to review the current research status of galaxy-galaxy lensing in(sub)millimeter bands from the perspectives of observation samples,modeling methods,and scientific applications.