A comparison of methods for gravitational wave burst searches from LIGO and Virgo
A comparison of methods for gravitational wave burst searches from LIGO and Virgo
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LIGO 和 Virgo 引力波爆发搜索方法的比较
DOI：
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发表时间：
2007
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通讯作者：
M. Zanolin
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作者：
F. Beauville;M. Bizouard;L. Blackburn;L. Bosi;L. Brocco;Duncan A. Brown;Duncan A. Brown;D. Buskulic;F. Cavalier;S. Chatterji;N. Christensen;A. Clapson;S. Fairhurst;D. Grosjean;G. Guidi;G. Guidi;P. Hello;S. Heng;M. Hewitson;E. Katsavounidis;S. Klimenko;M. Knight;A. Lazzarini;N. Leroy;F. Marion;J. Markowitz;C. Melachrinos;B. Mours;F. Ricci;A. Viceré;A. Viceré;I. Yakushin;M. Zanolin
利用三个干涉仪（Hanford 4 km， Livingston 4 km和Virgo 3 km为例）组成的网络中24小时的模拟数据，研究了对爆发引力波的搜索过程。对LIGO科学合作组织（LSC）和Virgo合作组织开发的几种探测爆发事件的方法进行了研究和比较。我们对不同干涉仪在数据中添加和不添加模拟信号时得到的触发器进行了符合性分析。通过比较LSC和Virgo联合符合分析的探测性能，证明了具有相似灵敏度的多个干涉仪的好处。将Virgo加入到LIGO探测器网络中可以使该搜索的检测效率提高50%。LIGO-Virgo联合网络的另一个优势是能够重建源天空位置。重建精度取决于每个干涉仪中事件的定时测量精度，文中给出了一个固定源位置的例子。
The search procedure for burst gravitational waves has been studied using 24 h of simulated data in a network of three interferometers (Hanford 4 km, Livingston 4 km and Virgo 3 km are the example interferometers). Several methods to detect burst events developed in the LIGO Scientific Collaboration (LSC) and Virgo Collaboration have been studied and compared. We have performed coincidence analysis of the triggers obtained in the different interferometers with and without simulated signals added to the data. The benefits of having multiple interferometers of similar sensitivity are demonstrated by comparing the detection performance of the joint coincidence analysis with LSC and Virgo only burst searches. Adding Virgo to the LIGO detector network can increase by 50% the detection efficiency for this search. Another advantage of a joint LIGO–Virgo network is the ability to reconstruct the source sky position. The reconstruction accuracy depends on the timing measurement accuracy of the events in each interferometer, and is displayed in this paper with a fixed source position example.