臺灣博碩士論文加值系統

自一九九六年一月 X 射線人造衛星 RXTE 升空至今，波霎 PSR B1509-58 便一直持續的被觀測著。這七年的觀測資訊可以讓我們有能力測量此波煞自轉週期對於時間的第一及第二次導函數用以幫助我們尋找其他可能存在的未知週期。這些可能存在的未知週期可能會藉由中子星表面的波動現象來表現它們的性質，進行此研究能有助於提升我們對中子星此種星體在物理上的了解。
做為第一次的嘗試，我們使用 H-TEST 的方法來分析人造衛星 RXTE 對於波霎 PSR B1509-58 使用裝載於其上之科學儀器 PCA 從一九九六年到二零零二年之觀測資料，包含了超過三千萬筆光子的資訊，來尋找不同於自轉週期的其他可能週期。我們以千分之一秒為間隔在零到三秒間搜尋。沒有其他的週期被找到。然而有一些可疑的徵兆值得進行更進一步的的研究。再者，千分之一秒的搜索間距是太寬的了。更為精細的取樣間距與更為寬廣範圍的搜尋（這樣需要更久的電腦運算時間）也已經在籌備計畫中。

The stable pulsar PSR B1509-58 has been monitored with the Rossi X-ray Timing Explorer (RXTE) for seven years, since the start of that mission in January 1996. The long-term observation has enabled us to determine the first and the se
cond period derivatives which can help us to search for other possible periodicities with data over a long time span. These possible periods may reveal properties of MHD waves on the surface of neutron stars, and thus promote our understand
ing of neutron star physics.
As the first of such attempts, we applied the H-test to RXTE/PCA data of PSR B1509-58 spanning from 1996 to 2002, consisting of more than 3*10^7 photon events, to search for periods other than the spin period. A search in the period
range of 0~0.3 sec with 1-msec steps was conducted. No other periods were found. Some suspicious signatures, however, deserve further investigation. Moreover, the search sampling rate (1 msec per step) is too loose. A study with a higher sampling rate and a wider search range, which requires more computing time, is in preparation.

CH1 Introduction
CH2 Data Reduction
CH3 Methods of Timing Analysis
CH4 The Long-Term Timing Behavior of PSR B1509-58
CH5 Results and Discussion

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