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arXiv 0802.3219astro-ph
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用改进的引力透镜模型估算哈勃时间

A New Estimate of the Hubble Time with Improved Modeling of Gravitational Lenses

Jonathan Coles

摘要:

本文探讨了自由形式的建模重力透镜使用贝叶斯合奏的像素质量地图。从以前的工作的先验知识和算法进行了澄清和重大的技术改进。透镜重建和哈勃时间恢复测试使用模拟数据从简单的分析模型和最近的星系形成模拟。最后,利用已发表的数据,通过同时重建11个延时透镜来推断哈勃时间。结果为H_0^{-1}=13.7^{+1.8}_{-1.0} Gyr。

英文摘要:

This paper examines free-form modeling of gravitational lenses using Bayesian ensembles of pixelated mass maps. The priors and algorithms from previous work are clarified and significant technical improvements are made. Lens reconstruction and Hubble Time recovery are tested using mock data from simple analytic models and recent galaxy-formation simulations. Finally, using published data, the Hubble Time is inferred through the simultaneous reconstruction of eleven time-delay lenses. The result is H_0^{-1}=13.7^{+1.8}_{-1.0} Gyr.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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