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arXiv 1201.2127astro-ph.COastro-ph.GAastro-ph.IM
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空间变化点扩散函数的强引力透镜模型

Strong Gravitational Lens Modeling with Spatially Variant Point Spread Functions

Adam Rogers, Jason D. Fiege

摘要:

天文仪器通常具有空间变化的点扩散函数,其确定作为位置的函数的图像像素模糊的量。已经设计了几种技术来处理标准图像去卷积问题的上下文中的这种变化。我们已经开发了一个迭代引力透镜建模代码称为海市蜃楼,确定一个给定的透镜模型的像素化源强度分布的参数。我们能够包括空间变化的点扩散函数的影响,使用迭代程序在这个透镜代码。在本文中,我们讨论的方法,包括空间变化的模糊效果和测试的重力透镜建模问题的背景下,该算法的结果。

英文摘要:

Astronomical instruments generally possess spatially variant point-spread functions, which determine the amount by which an image pixel is blurred as a function of position. Several techniques have been devised to handle this variability in the context of the standard image deconvolution problem. We have developed an iterative gravitational lens modeling code called Mirage that determines the parameters of pixelated source intensity distributions for a given lens model. We are able to include the effects of spatially variant point-spread functions using the iterative procedures in this lensing code. In this paper, we discuss the methods to include spatially variant blurring effects and test the results of the algorithm in the context of gravitational lens modeling problems.

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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