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arXiv 1108.0504astro-ph.CO
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混响类星体宽线区的引力微透镜- I。方法和定性结果

Gravitational Microlensing of a Reverberating Quasar Broad Line Region - I. Method and Qualitative Results

H. Garsden, N. F. Bate, G. F. Lewis

摘要:

类星体宽发射线区(BELR)的运动学和形态学一直是人们争论的焦点。约束BELR特性的两种主要方法是微透镜和混响映射。在这里,我们结合这两种方法与研究的微透镜行为的BELR在Q2237+0305,作为一个变化的连续辐射(一个“耀斑”)通过it. Beginning与一些通用模型的BELR -球,双锥,磁盘-我们切片的速度和时间,以产生亮度轮廓的BELR在耀斑的持续时间。这些数值微透镜,以确定是否微透镜混响映射提供了新的信息的属性的BELR。我们描述了我们的方法,并显示图像的模型,因为他们是耀斑,和unlensed和透镜的光谱产生。本文给出了定性的结果和讨论的光谱,突出了一些可以观察到的效果。我们的结论是,微透镜的影响,而不是强大的,可以产生显着的可观察到的效果,这将有助于区分的性质的BELR。

英文摘要:

The kinematics and morphology of the broad emission line region (BELR) of quasars are the subject of significant debate. The two leading methods for constraining BELR properties are microlensing and reverberation mapping. Here we combine these two methods with a study of the microlensing behaviour of the BELR in Q2237+0305, as a change in continuum emission (a "flare") passes through it. Beginning with some generic models of the BELR - sphere, bicones, disk - we slice in velocity and time to produce brightness profiles of the BELR over the duration of the flare. These are numerically microlensed to determine whether microlensing of reverberation mapping provides new information about the properties of BELRs. We describe our method and show images of the models as they are flaring, and the unlensed and lensed spectra that are produced. Qualitative results and a discussion of the spectra are given in this paper, highlighting some effects that could be observed. Our conclusion is that the influence of microlensing, while not strong, can produce significant observable effects that will help in differentiating the properties of BELRs.

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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