| 黑洞引力透镜的可观测性 |
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| 引用本文： | 孙学锋,兰天,张明建,张同杰.黑洞引力透镜的可观测性[J].北京师范大学学报(自然科学版),2010,46(6). |
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| 作者姓名： | 孙学锋 兰天 张明建 张同杰 |
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| 作者单位： | 北京师范大学天文学系,100875,北京;黑龙江科技学院实训中心,150027,哈尔滨;北京师范大学天文学系,100875,北京;北京师范大学天文学系,100875,北京;中国科学院卡弗里理论物理研究所,100190,北京;北京大学高能物理中心,100871,北京 |
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| 基金项目： | 国家自然科学基金资助项目，国家基础研究"973"计划基金资助项目 |
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| 摘 要： | 通过分析黑洞引力透镜现象的特征,讨论黑洞的可观测性.在像的分离角小于最小分辨角的情况下,视亮度随像的级数的增加而指数衰减.若存在角直径可分辨,且足够大质量的黑洞,在某种条件下,可产生时间延迟.这样就使运动光源产生的相邻级数的像分开,从而达到可观测的效果.
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| 关 键 词： | 黑洞 引力透镜 时间延迟 可观测性 |
OBSERVABILITY OF BLACK HOLE LENSING |
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| SUN Xuefeng, Lan Tian ZHANG Tongjie,.OBSERVABILITY OF BLACK HOLE LENSING[J].Journal of Beijing Normal University(Natural Science),2010,46(6). |
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| Authors: | SUN Xuefeng Lan Tian ZHANG Tongjie |
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| Institution: | SUN Xuefeng1,2) Lan Tian1) ZHANG Tongjie1,3,4)(1)Department of Astronomy,Beijing Normal University,100875,Beijing,China,2)Center for Engineering Training and Basic Experimentation,Heilongjiang University of Science and Technology,150027,Harbin,3)Kavli Institute for Theoretical Physics China,CAS,100190,4)Center for High Energy Physics,Peking University,100871,China) |
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| Abstract: | Observability of black hole is affected by characteristics of black hole lensing.If image angular separation is less than the lowest angular resolution,brightness will decrease exponentially with order of image.For a large enough black hole with an observable angular diameter,it will cause time delay under specific conditions,such that adjacent images generated by moving light source can be separated into clear images,leading to observable effects. |
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| Keywords: | black hole lensing time delay observability |
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