碩士 / 國立臺灣大學 / 物理研究所 / 96 / Serendipitous occultation is currently the only way to study the comet-size Trans-Neptunian Objects (TNOs). The occultation signal is basically restricted by the angular size of a target star, spectrum, the shape and size of TNOs and the distance from earth to TNOs. One will be able to derive the size, shape, population, and even its distance through the study of TNOs’ shadow on the ground. It was focused on the analysis of the diffraction pattern of regular objects in most of the previous works. Though, a comet-size TNO is believed to be irregular in shape.
Considering the spectral types of the background stars together with the spectral response of a CCD camera and a band-pass filter, we analyze the diffraction patterns by TNOs of various shapes. The calculation in this paper bases on the theory of‘Boundary Diffraction waves’. This theory helps us to replace the surface-integral with line-integral. With this theory, we are able to study the statistical properties of these diffraction patterns. Our result should be helpful in the interpretation of the result of a TNO occultation surveys, such as the Taiwan-America Occultation Survey (TAOS) project. It can also be used in the related occultation simulation so that a more complete picture can be obtained.
| Identifer | oai:union.ndltd.org:TW/096NTU05198078 |
| Creators | Chih-Hao Kao, 高至豪 |
| Contributors | Jiun-Huei Wu, 吳俊輝 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 63 |
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