论文标题

拦截任务1i/'oumuamua的物理考虑因素

Physical Considerations for an Intercept Mission to a 1I/'Oumuamua-like Interstellar Object

论文作者

Siraj, Amir, Loeb, Abraham, Moro-Martin, Amaya, Elowitz, Mark, White, Abigail, Watters, Wesley, Melnick, Gary, Cloete, Richard, Grindlay, Jonathan, Laukien, Frank

论文摘要

在本文中,我们回顾了一些有关星际对象(ISO)研究的现有文献。随着即将到来的Vera C. Rubin望远镜和时空的传统调查(LSST),我们发现预计$ 0.38-84 $`OUMUAMUA样的星际物体将在未来10年内以95 \%的信心检测到。在先前的工作中已经证明了集合轨迹的可行性。在本文中,我们调查了对集合任务的要求,其主要目的是产生星际对象的解决图像。我们概述了所需的集合距离作为分辨率元素和对象大小的函数。我们扩展了当前的人口综合模型,以说明可触及星际对象检测率的尺寸依赖性。我们评估对象直径和发生率之间的权衡,得出结论,大小范围介于大小的三分之一和大小'oumuamua的对象将是成像集合的最佳目标。我们还讨论了星际物体的表面特性和光谱特征的期望,以及各种航天器存储位置的好处。

In this paper, we review some of the extant literature on the study of interstellar objects (ISOs). With the forthcoming Vera C. Rubin Telescope and Legacy Survey of Space and Time (LSST), we find that $0.38 - 84$ `Oumuamua-like interstellar objects are expected to be detected in the next 10 years, with 95\% confidence. The feasibility of a rendezvous trajectory has been demonstrated in previous work. In this paper, we investigate the requirements for a rendezvous mission with the primary objective of producing a resolved image of an interstellar object. We outline the rendezvous distances necessary as a function of resolution elements and object size. We expand upon current population synthesis models to account for the size dependency on the detection rates for reachable interstellar objects. We assess the trade-off between object diameter and occurrence rate, and conclude that objects with the size range between a third of the size and the size of `Oumuamua will be optimal targets for an imaging rendezvous. We also discuss expectations for surface properties and spectral features of interstellar objects, as well as the benefits of various spacecraft storage locations.

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