Results from high-frequency all-sky search for continuous gravitational waves from small-ellipticity sources

被引：21
|
作者：
Dergachev, Vladimir [1 ,2 ]
Papa, Maria Alessandra [1 ,2 ,3 ]
机构：
[1] Max Planck Inst Gravitat Phys, Albert Einstein Inst, Callinstr 38, D-30167 Hannover, Germany
[2] Leibniz Univ Hannover, D-30167 Hannover, Germany
[3] Univ Wisconsin Milwaukee, 3135 N Maryland Ave, Milwaukee, WI 53211 USA
来源：
PHYSICAL REVIEW D | 2021年 / 103卷 / 06期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1103/PhysRevD.103.063019
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We present the results of an all-sky search for continuous gravitational wave signals with frequencies in the 1700-2000 Hz range from neutron stars with ellipticity of approximate to 10(-8). The search employs the Falcon analysis pipeline [V. Dergachev and M. A. Papa, Phys. Rev. Lett. 123, 101101 (2019)] on LIGO O2 public data. Our results improve by a factor greater than 5 over [B. P. Abbott et al. (LIGO Scientific and Virgo Collaborations), Phys. Rev. D 100, 024004 (2019)]. This is a huge leap forward: it takes an entirely new generation of gravitational wave detectors to achieve a 10-fold sensitivity increase over the previous generation [D. Reitze et al., Bull. Am. Astron. Soc. 51, 035 (2019)]. Within the probed frequency range and aside from the detected outliers, we can exclude neutron stars with ellipticity of 10(-8) within 65 pc of Earth. We set upper limits on the gravitational wave amplitude that holds even for worst-case signal parameters. New outliers are found, some of which we are unable to associate with any instrumental cause. If any were associated with a rotating neutron star, this would likely be the fastest neutron star today.
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页数：6
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