论文标题
通过光学和红外观测来辨别不同'Oumuamua模型
Discerning between different 'Oumuamua models by optical and infrared observations
论文作者
论文摘要
在我们的太阳系1I/2017 U1'Oumuamua中观察到的第一个星际对象结合了缺乏可观察到的彗星活动和额外的加速度。这引起了基于“ Oumuamua的材料组成”中不同假设的几个相互排斥的解释。我们展示了红外和光谱中观察结果的组合如何有助于区分这些解释，一旦另一个具有'omuamua样性能的物体就足够接近地球。这种可能性与已提出的不同材料模型的广泛不同的热性能有关。从分形模型开发用于热传导和红外信号的模型，我们将红外信号的预测与假设“ Oumuamua”为坚固的岩石/冰或薄板的标准热模型进行了比较。
The first interstellar object to be observed in our solar system 1I/2017 U1 'Oumuamua combines the lack of observable cometary activity with an extra-gravitational acceleration. This has given rise to several mutually exclusive explanations based on different assumptions in the material composition of 'Oumuamua. We show how a combination of observations in the infrared and optical spectra may serve to distinguish between these explanations once another object with 'Omuamua-like properties comes close enough to earth. This possibility is linked to the widely different thermal properties of the different material models that have been proposed. Developing a model for the thermal conduction and infrared signal from a fractal model we compare predictions of the infrared signal with that from standard thermal models that assume 'Oumuamua to be either a solid piece of rock/ice or a thin sheet.
