磁化奇异恒星和引力波信号

IF 1 4区 物理与天体物理 Q3 ASTRONOMY & ASTROPHYSICS
S. López-Pérez, D. Manreza-Paret, A. Pérez-Martínez, G. Gil-Pérez
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引用次数: 0

摘要

我们研究了两种情况下球形磁化奇异恒星的引力波发射:一个孤立的,缓慢旋转的恒星和一个双星系统。对于孤立的恒星,我们计算了四极矩和可能发射的引力波的振幅。对于双星系统,我们通过同时求解球面结构方程和Love数方程来确定潮汐变形。我们的结果与GW170817事件推断的数据进行了比较,GW170817事件也用于估计双星系统中伴星的质量和潮汐变形。我们的模型支持由磁化奇异恒星形成的双星系统的存在,预测的引力波信号与其他由磁化强子星或非磁化夸克星组成的双星系统模型一致。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Magnetized Strange Stars and Gravitational Waves Signals

We investigate the emission of gravitational waves from spheroidal magnetized strange stars in two scenarios: an isolated, slowly rotating star and a binary system. For the isolated star, we compute the quadrupole moment and the amplitude of the gravitational waves that may be emitted. In the case of the binary system, we determine the tidal deformation by simultaneously solving the spheroidal structure equations and the Love number equation. Our results are compared with data inferred from the GW170817 event, which is also used to estimate the mass and tidal deformation of the companion star in the binary system. Our model supports the existence of binary systems formed by magnetized strange stars, predicting gravitational wave signals consistent with other models of binary systems composed of magnetized hadronic stars or non-magnetized quark stars.

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来源期刊
Astronomische Nachrichten
Astronomische Nachrichten 地学天文-天文与天体物理
CiteScore
1.80
自引率
11.10%
发文量
57
审稿时长
4-8 weeks
期刊介绍: Astronomische Nachrichten, founded in 1821 by H. C. Schumacher, is the oldest astronomical journal worldwide still being published. Famous astronomical discoveries and important papers on astronomy and astrophysics published in more than 300 volumes of the journal give an outstanding representation of the progress of astronomical research over the last 180 years. Today, Astronomical Notes/ Astronomische Nachrichten publishes articles in the field of observational and theoretical astrophysics and related topics in solar-system and solar physics. Additional, papers on astronomical instrumentation ground-based and space-based as well as papers about numerical astrophysical techniques and supercomputer modelling are covered. Papers can be completed by short video sequences in the electronic version. Astronomical Notes/ Astronomische Nachrichten also publishes special issues of meeting proceedings.
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