用Explorer 2005资料对周期信号的全天非相干搜索
All-sky incoherent search for periodic signals with Explorer 2005 data
摘要：
共振棒探测器在2005年期间收集的数据被分成若干段，并进行非相干求和，以便对周期性引力波信号进行全天搜索。搜索的参数空间在频率上跨越约40 Hz，在天空中的23927个位置。既不包括源轨道修正，也不包括自旋降速参数，结果是，对频率漂移小于6 × 10^{-11} Hz/s的孤立中子星的搜索是敏感的。通过本分析没有发现引力波候选者，这导致无量纲应变振幅的最佳上限为3.1 × 10^{-23}。
英文摘要：
The data collected during 2005 by the resonant bar Explorer are divided into segments and incoherently summed in order to perform an all-sky search for periodic gravitational wave signals. The parameter space of the search spanned about 40 Hz in frequency, over 23927 positions in the sky. Neither source orbital corrections nor spindown parameters have been included, with the result that the search was sensible to isolated neutron stars with a frequency drift less than 6 X 10^{-11} Hz/s. No gravitational wave candidates have been found by means of the present analysis, which led to a best upper limit of 3.1 X 10^{-23} for the dimensionless strain amplitude.
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