Imaging the heart of astrophysical objects with optical long-baseline interferometry

Imaging the heart of astrophysical objects with optical long-baseline interferometry
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利用光学长基线干涉测量对天体物理物体的核心进行成像

DOI:
10.1007/s00159-012-0053-0
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发表时间:
2012
期刊:
The Astronomy and Astrophysics Review
影响因子:
--
通讯作者:
Berger J
Berger J
中科院分区:
--
文献类型:
--
作者:
Berger J

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最近,由于更容易获得可见光和红外干涉仪,基于光学长基线干涉测量的孔径合成图像的出版物数量有所增加。干涉测量技术现已达到技术成熟水平,为许多需要毫角秒模型独立成像的天体物理学课题开辟了新的途径。我们写这篇论文的动机是双重的:(1)回顾和宣传在光学干涉测量图像重建领域积累的令人印象深刻的语料库的象征性摘录;(2)通过选择四个有代表性的天体物理科学案例,讨论该技术的未来前景,以审查使用光学长-对于这第二个目标,我们已经模拟了来自那些选定的天体物理环境的干涉数据,并使用最先进的代码来提供用当前或即将使用的设施可以获得的重建图像。图像重建过程是“盲目的”,在这个意义上说,重建器没有输入亮度分布的知识。我们讨论了光学干涉测量在这四个天体物理领域的影响。我们表明,图像重建软件成功地提供了准确的形态信息的各种天体物理学的主题,并审查目前的优势和弱点,这样reconstructs.We调查如何提高图像重建和图像的质量可能通过升级现有的设施。最后,我们认为,光学干涉仪及其相应的仪器,现有的或未来的,与6至10个望远镜,应该很适合提供复杂的场景的图像。
The number of publications of aperture-synthesis images based on optical long-baseline interferometry measurements has recently increased due to easier access to visible and infrared interferometers. The interferometry technique has now reached a technical maturity level that opens new avenues for numerous astrophysical topics requiring milli-arcsecond model-independent imaging. In writing this paper our motivation was twofold: (1) review and publicize emblematic excerpts of the impressive corpus accumulated in the field of optical interferometry image reconstruction; (2) discuss future prospects for this technique by selecting four representative astrophysical science cases in order to review the potential benefits of using optical long-baseline interferometers.For this second goal we have simulated interferometric data from those selected astrophysical environments and used state-of-the-art codes to provide the reconstructed images that are reachable with current or soon-to-be facilities. The image-reconstruction process was “blind” in the sense that reconstructors had no knowledge of the input brightness distributions. We discuss the impact of optical interferometry in those four astrophysical fields. We show that image-reconstruction software successfully provides accurate morphological information on a variety of astrophysical topics and review the current strengths and weaknesses of such reconstructions.We investigate how to improve image reconstruction and the quality of the image possibly by upgrading the current facilities. We finally argue that optical interferometers and their corresponding instrumentation, existing or to come, with six to ten telescopes, should be well suited to provide images of complex sceneries.
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