用gamma-ray望远镜阵列进行强度干涉测量的潜力
The potential for intensity interferometry with gamma-ray telescope arrays
摘要：
强度干涉法利用量子光学效应来测量具有极小角度尺度的物体。第一个使用这种技术的实验是Narrabri强度干涉仪，它在20世纪70年代成功地用于测量32颗恒星的光学波长直径;有些小到0.4毫弧秒。与迈克耳孙干涉仪相比，这种技术的优点在于，它只需要相对粗糙但较大的光收集器，并配备有快速（纳秒）光子探测器。地面伽马射线望远镜阵列具有类似的规格，其中一些观测站目前正在世界各地运行，并计划在未来进行更广泛的安装。这些未来的仪器（CTA，AGIS，2015年完成）将配备30-90个望远镜，提供400-4000个不同的基线，长度在50米到1公里之间。用这样的望远镜阵列进行强度干涉测量，在极限视星等~8.5时，其分辨率达到$50 μ$ -角秒。相位信息可以从具有相位闭合的干涉测量中提取，从而允许图像重建。这项技术开辟了广泛的研究的可能性，其中包括探测恒星表面活动和动态AU尺度的恒星在各个关键的演化阶段的星周环境。在这里，我们专注于天体物理潜力的强度干涉仪利用计划中的新的伽马射线仪器。
英文摘要：
Intensity interferometry exploits a quantum optical effect in order to measure objects with extremely small angular scales. The first experiment to use this technique was the Narrabri intensity interferometer, which was successfully used in the 1970s to measure 32 stellar diameters at optical wavelengths; some as small as 0.4 milli-arcseconds. The advantage of this technique, in comparison with Michelson interferometers, is that it requires only relatively crude, but large, light collectors equipped with fast (nanosecond) photon detectors. Ground-based gamma-ray telescope arrays have similar specifications, and a number of these observatories are now operating worldwide, with more extensive installations planned for the future. These future instruments (CTA, AGIS, completion 2015) with 30-90 telescopes will provide 400-4000 different baselines that range in length between 50m and a kilometre. Intensity interferometry with such arrays of telescopes attains $50 μ$-arcsecond resolution for a limiting visual magnitude ~8.5. Phase information can be extracted from the interferometric measurement with phase closure, allowing image reconstruction. This technique opens the possibility of a wide range of studies amongst others, probing the stellar surface activity and the dynamic AU scale circumstellar environment of stars in various crucial evolutionary stages. Here we focuse on the astrophysical potential of an intensity interferometer utilising planned new gamma-ray instrumentation.
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。
