Search for continuous gravitational waves from neutron stars in globular cluster NGC 6544

Search for continuous gravitational waves from neutron stars in globular cluster NGC 6544
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搜索球状星团 NGC 6544 中中子星的连续引力波

DOI:
10.1103/physrevd.95.082005
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发表时间:
2017
期刊:
影响因子:
5
通讯作者:
Abbott B
Abbott B
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Abbott B

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我们描述了在第六次初始LIGO科学运行的数据中对连续引力波的定向搜索。目标是附近的球状星团NGC 6544,距离为。搜索范围很广,包括一阶和二阶频率导数,以确定天空的固定位置。在9.2天的时间跨度内,使用匹配滤波统计数据对来自两个LIGO干涉仪的数据进行了相干整合。我们没有发现引力波信号,并设定了95%的置信度上限作为严格的本征应变和基准椭圆率。这些值超过了自旋年龄大于300年的恒星的能量守恒的间接限制,并且在可能的中子星椭圆的理论预测范围内。该搜索的一个重要特征是使用了重心重采样算法,大大降低了计算成本;这种方法被广泛用于高级LIGO和处女座探测器数据的搜索。
We describe a directed search for continuous gravitational waves in data from the sixth initial LIGO science run. The target was the nearby globular cluster NGC 6544 at a distance of. The search covered a broad band of frequencies along with first and second frequency derivatives for a fixed sky position. The search coherently integrated data from the two LIGO interferometers over a time span of 9.2 days using the matched-filtering-statistic. We found no gravitational-wave signals and set 95% confidence upper limits as stringent ason intrinsic strain andon fiducial ellipticity. These values beat the indirect limits from energy conservation for stars with characteristic spin-down ages older than 300 years and are within the range of theoretical predictions for possible neutron-star ellipticities. An important feature of this search was use of a barycentric resampling algorithm which substantially reduced computational cost; this method is used extensively in searches of Advanced LIGO and Virgo detector data.
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DOI: 10.1111/j.1752-7325.1955.tb01559.x
发表时间: 1931
期刊: The Indian Medical Gazette
影响因子: --
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JψφK at Babar;B. Aubert;M. Bona;Y. Karyotakis;J. Lees;V. Poireau;E. Prencipe;X. Prudent;V. Tisserand;M. Barrett;A. Khan;V. Blinov;A. Bukin;A. Buzykaev;V. Druzhinin;V. Golubev;A. Onuchin;S. Serednyakov;Y. Skovpen;E. Solodov;K. Yu;M. Bondioli;S. Curry;I. Eschrich;D. Kirkby;A. Lankford;P. Lund;M. Mandelkern;E. Martin;D. Stoker;C. Flacco;C. Heusch;J. Kroseberg;W. Lockman;A. J. Martinez
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发表时间: 2009
期刊: Journal of Physics: Conference Series
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期刊:
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