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首页> 外文期刊>Astronomy and astrophysics >A search for periodic gravitational waves from three recycled pulsars using the AURIGA detector - An implementation of a modified version of the unified approach method
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A search for periodic gravitational waves from three recycled pulsars using the AURIGA detector - An implementation of a modified version of the unified approach method

机译：使用AURIGA探测器搜索来自三个循环脉冲星的周期性引力波-统一方法的改进版本的实现

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Aims. We report on a search for continuous gravitational wave emission from three recycled radio pulsars, performed by using the data of the resonant detector AURIGA. Given the spin rate of the selected targets - the isolated pulsar PSR J1939+2134 and the binary pulsars PSR J0024-7204J and PSR J0218+4232 - the expected frequency of the emitted gravitational waves falls in the high sensitivity range of the detector. Methods. The main topic is the method, meaning that the statistical analysis is performed by implementing a slightly modified version of the Feldman and Cousins Unified Approach. Results. By using ephemerides provided by suitable radio observations of the targets, we were able to demodulate the Doppler shifts within a coherence time of 1 day, and then incoherently sum 10 daily spectra collected from December 8th to December 17th, 2006. We have found upper limits on the gravitational wave amplitudes in the order of a few units of 10-23 at 90% Confidence Level (C.L.), which translate to limits in the ellipticity of the targeted pulsars of at 90% C.L. Conclusions. The same framework can then be applied to data coming from most sensitive experiments as VIRGO or LIGO; moreover, an application to recently discovered transients in X-ray pulsars is discussed. Key words: gravitational waves - pulsars: general - methods: data analysis - methods: statistical - techniques: radial velocities
机译：目的我们报告了使用共振探测器AURIGA的数据对来自三个循环无线电脉冲星的连续引力波发射的搜索。给定选定目标的自旋速率-隔离脉冲星PSR J1939 + 2134和二进制脉冲星PSR J0024-7204J和PSR J0218 + 4232-发射的引力波的预期频率落在检测器的高灵敏度范围内。方法。主要主题是方法，这意味着统计分析是通过实施Feldman and Cousins统一方法的略微修改版本进行的。结果。通过使用适当的目标无线电观测仪提供的星历表，我们能够在1天的相干时间内解调多普勒频移，然后从2006年12月8日至12月17日对10个每日频谱进行非相干求和。我们发现了上限在90％置信水平（CL）上的引力波幅度大约为10-23的几个单位，这转化为90％CL的目标脉冲星椭圆率的极限结论。然后可以将相同的框架应用于来自最敏感实验（如VIRGO或LIGO）的数据;此外，讨论了在最近发现的X射线脉冲星中的瞬态的应用。关键词：引力波-脉冲星：一般-方法：数据分析-方法：统计-技术：径向速度

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