Population synthesis and parameter estimation of neutron stars with continuous gravitational waves and third-generation detectors
Population synthesis and parameter estimation of neutron stars with continuous gravitational waves and third-generation detectors
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连续引力波和第三代探测器的中子星星群合成与参数估计
DOI：
10.1093/mnras/stad3811
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发表时间：
2023
影响因子：
4.8
通讯作者：
Hua Y
中科院分区：
文献类型：
--
作者：
Hua Y
通过观测来自旋转非轴对称中子星的连续引力波来精确测量恒星性质，可以揭示地球实验室之外的新物理学。虽然迄今为止还没有探测到，但随着观测周期的延长和引力波探测器的灵敏度提高，探测连续引力波的前景会有所改善。我们研究了先进激光干涉引力波天文台和爱因斯坦望远镜通过连续引力波观测测量中子星物理性质的能力。我们模拟银河系中子星的人口，假设连续的引力波从恒星已被检测到，并进行参数估计的检测信号。使用估计的参数，我们推断恒星的惯性矩，椭圆率，和垂直于旋转轴的磁偶极矩的分量。制动指数的估计证明是具有挑战性的，是负责推断参数的大部分不确定性。使用爱因斯坦望远镜，观测周期为，可以对惯性矩进行中值点估计，误差为，对椭圆度进行中值点估计，误差为，并受制动指数的影响。对于主要发射引力波的中子星，垂直磁偶极矩不能准确地推断出来。
Precise measurement of stellar properties through the observation of continuous gravitational waves from spinning non-axisymmetric neutron stars can shed light onto new physics beyond terrestrial laboratories. Although hitherto undetected, prospects for detecting continuous gravitational waves improve with longer observation periods and more sensitive gravitational wave detectors. We study the capability of the Advanced Laser Interferometer Gravitational-Wave Observatory, and the Einstein Telescope to measure the physical properties of neutron stars through continuous gravitational wave observations. We simulate a population of Galactic neutron stars, assume continuous gravitational waves from the stars have been detected, and perform parameter estimation of the detected signals. Using the estimated parameters, we infer the stars’ moments of inertia, ellipticities, and the components of the magnetic dipole moment perpendicular to the rotation axis. The estimation of the braking index proved challenging and is responsible for the majority of the uncertainties in the inferred parameters. Using the Einstein Telescope with an observation period of, point estimates using median can be made on the moments of inertia with error ofand on the ellipticities with error of, subject to the inference of the braking index. The perpendicular magnetic dipole moment could not be accurately inferred for neutron stars that emit mainly gravitational waves.
宇宙探索者的地平线研究：科学、天文台和社区
DOI：
--
发表时间：
2021
期刊：
影响因子：
--
作者：
M. Evans;R. Adhikari;Chaitanya Afle;S. Ballmer;S. Biscoveanu;S. Borhanian;Duncan A. Brown;Yanbei Chen;R. Eisenstein;A. Gruson;Anuradha Gupta;E. Hall;R. Huxford;B. Kamai;R. Kashyap;J. Kissel;K. Kuns;P. Landry;A. Lenon;G. Lovelace;L. McCuller;K. Ng;A. Nitz;J. Read;B. Sathyaprakash;D. Shoemaker;B. Slagmolen;J. Smith;V. Srivastava;Ling Sun;S. Vitale;R. Weiss
通讯作者：
R. Weiss
银河系中的双中子星数量
DOI：
--
发表时间：
2023
期刊：
影响因子：
--
作者：
Cecilia Sgalletta;G. Iorio;M. Mapelli;M. Artale;L. Boco;D. Chattopadhyay;A. Lapi;A. Possenti;Stefano Rinaldi;M. Spera
通讯作者：
M. Spera