用广义FrequencyHough寻找孤立中子星长时程引力波瞬变的方法
A method to search for long duration gravitational wave transients from isolated neutron stars using the generalized FrequencyHough
摘要：
我们描述了一种方法来检测引力波持久$O(hours-days)$发射的年轻，孤立的中子星，如那些可能形成后，超新星或二进制中子星合并，使用先进的LIGO/处女座数据。该方法是基于一个概括的FrequencyHough（FH），一个管道，执行分层搜索连续引力波的时间/频率平面的检测器的映射点的线在频率/旋转平面的源。我们表明，信号的自旋相关的频率由幂律可以转换到坐标的行为，这些信号总是线性的，因此可以搜索的FH。我们估计我们的搜索在不同的制动指数的灵敏度，并描述了部分的参数空间，我们可以探索在搜索中使用不同的快速傅立叶变换（FFT）的长度。
英文摘要：
We describe a method to detect gravitational waves lasting $O(hours-days)$ emitted by young, isolated neutron stars, such as those that could form after a supernova or a binary neutron star merger, using advanced LIGO/Virgo data. The method is based on a generalization of the FrequencyHough (FH), a pipeline that performs hierarchical searches for continuous gravitational waves by mapping points in the time/frequency plane of the detector to lines in the frequency/spindown plane of the source. We show that signals whose spindowns are related to their frequencies by a power law can be transformed to coordinates where the behavior of these signals is always linear, and can therefore be searched for by the FH. We estimate the sensitivity of our search across different braking indices, and describe the portion of the parameter space we could explore in a search using varying fast Fourier Transform (FFT) lengths.
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