论文标题
通过强度干涉测量法，在α世马人物中检测天体行星的模拟
Simulations of astrometric planet detection in Alpha Centauri by intensity interferometry
论文作者
论文摘要
最近的动力学研究表明，应认真对待$α\; $ cen a或b的地球状行星的可能性。这样的行星，如果存在的话，将轨道天文统计用$ <10 \μ\ rm为$，即两颗恒星之间的分离的$ 10^{ - 6} $。我们评估使用地面强度干涉法检测此类扰动的可行性。我们模拟了一个专用设置，该设置由四个40 cm望远镜组成，配备了光子计数器和相关器，并分辨率分辨率为$ 0.1 \，\ rm ns $，以及通过光圈掩码实现的一种匹配过滤器。观察$α\; $ cen ab的一个晚上的天文误差为$ \ of0.5 \，\ rm mas $。如果使用较长的观察时间和多个光谱通道，则误差会减小，为$（\ hbox {channels} \ times \ times \ hbox {nights}）^{ - 1/2} $。
Recent dynamical studies indicate that the possibility of an Earth-like planet around $α\;$Cen A or B should be taken seriously. Such a planet, if it exists, would perturb the orbital astrometry by $<10 \ μ\rm as$, which is $10^{-6}$ of the separation between the two stars. We assess the feasibility of detecting such perturbations using ground-based intensity interferometry. We simulate a dedicated setup consisting of four 40-cm telescopes equipped with photon counters and correlators with time resolution $0.1\,\rm ns$, and a sort of matched filter implemented through an aperture mask. The astrometric error from one night of observing $α\;$Cen AB is $\approx0.5\,\rm mas$. The error decreases if longer observing times and multiple spectral channels are used, as $(\hbox{channels}\times\hbox{nights})^{-1/2}$.
