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用未来天基引力波探测器DECIGO和BBO探测奇异夸克物质天体

Probing strange quark matter objects with future space-based gravitational wave detectors DECIGO and BBO

Abdusattar Kurban, Xia Zhou, Na Wang, Yong-Feng Huang, Wenming Yan, Jianping Yuan, Ali Esamdin, Rai Yuen, Jin-Hong Chen, Xiao-Fei Dong, Zhigang Wen, Yu-Bin Wang

arXiv 2608.01408首次发表:更新:

AI 中文总结

本研究聚焦SS-SP系统的连续GW特征,对比DECIGO与BBO的灵敏度曲线,发现二者可在宽参数空间探测该系统的连续GW,相关信号可用于检验SQM假说并深化对超新星等过程的认知。

AI 中文摘要

奇异夸克物质(SQM)假说认为,由SQM构成的天体可存在于从奇异行星(SPs)到奇异星(SSs)的宽质量范围内。已有研究提出,奇异星-奇异行星(SS-SP)并合系统辐射的引力波(GWs)或可被先进LIGO、爱因斯坦望远镜等地基GW观测站探测到。然而,这类系统在进入并合阶段前,可能会在密近构型下经历一段长时间的轨道演化,此阶段会产生毫赫兹(mHz)至分赫兹(dHz)频段的连续GW信号,其详细特征尚未得到充分探究。本研究深入分析SS-SP系统的连续GW特征,重点探究物理上可行的参数空间,将该系统辐射的GW信号与下一代天基GW探测器——分赫兹干涉仪引力波天文台(DECIGO)、大爆炸探测器(BBO)的灵敏度曲线进行对比。分析表明,DECIGO和BBO均可在宽参数空间内探测到SS-SP系统的连续GW,这些GW携带的重要信息可用于检验SQM假说,推动人类对超新星及致密星并合过程的理解。

英文摘要

The Strange Quark Matter (SQM) hypothesis posits that objects composed of SQM could exist across a wide mass range, from strange planets (SPs) to strange stars (SSs). It has been proposed that gravitational waves (GWs) emitted by inspiraling SS-SP systems may be detectable by ground-based GW observatories such as advanced LIGO and the Einstein Telescope. Nevertheless, such a system may undergo an extended period of orbital evolution in a close configuration before entering the inspiraling phase. During this time, it can generate continuous GW signals at frequencies ranging from milli-hertz (mHz) to deci-hertz (dHz). The detailed characteristics of these GWs have not yet been thoroughly explored. In this study, we delve into the continuous GW features of SS-SP systems, with a focus on exploring the physically viable parameter space. We compared the GW signals emitted by these systems to the sensitivity curves of next-generation space-based GW detectors like the Deci-hertz Interferometer Gravitational wave Observatory (DECIGO) and the Big Bang Observer (BBO). Our analyses demonstrate that both the DECIGO and BBO detectors are capable of detecting continuous GWs from SS-SP systems across a broad parameter space. These GWs carry important information for testing the SQM hypothesis, as well as for advancing our understanding of supernovae and compact star merger processes.

Comments12 pages, 5 figures, 2 tables. Comments are welcome

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