Unveiling the nature of gravitational-wave emission in core-collapse supernovae with perturbative analysis

doi:10.1103/PhysRevD.109.083023

YNAO OpenIR > 大样本恒星演化研究组

	Unveiling the nature of gravitational-wave emission in core-collapse supernovae with perturbative analysis
	Cha S(查帅)1 ; Andersen, Oliver Eggenberger 2; O’Connor, Evan P.2
发表期刊	PHYSICAL REVIEW D
	2024-04-16
卷号	109 期号:8
DOI	10.1103/PhysRevD.109.083023
产权排序	第1完成单位
收录类别	SCI
摘要	Gravitational waves (GWs) can provide crucial information about the central engines of core-collapse supernovae (CCSNe). In order to unveil the nature of GW emission in CCSNe, we apply perturbative analyses with the same underlying equations as simulations to diagnose oscillations of the proto-neutron star (PNS) during -1 s postbounce. In the pseudo-Newtonian case, we find that radial profiles of GW emission match well between the perturbative analysis with l = 2 and simulations inside the PNS at any frequency and time. This confirms that the GW emission of CCSNe arises from the global PNS oscillations in the perturbative regime. Based on this, we solve for the discrete eigenmodes with a free PNS surface and tentatively identify a set of g modes and the f mode contributing to the peak GW emission. We also offer a possible explanation for the power gap in the GW spectrum found in simulations that lies at the frequency with vanishing cumulative emission of the PNS. Our results enhance the predictive power of perturbative analyses in the GW signals of CCSNe.
资助项目	National Natural Science Foundation of China (NSFC)[12288102]; National Natural Science Foundation of China (NSFC)[12393811]; National Natural Science Foundation of China (NSFC)[12090040/3]; National Key R&D Program of China[2021YFA1600401]; National Key R&D Program of China[2021YFA1600400]; International Centre of Supernovae, Yunnan Key Laboratory[202302AN360001]; Swedish Research Council[2022-06725]; Swedish Research Council[2018-05973]; Swedish Research Council[2020-00452]; Natural Science Foundation of Yunnan Province[202201BC070003]; Yunnan Fundamental Research Project[202401BC070007]
项目资助者	National Natural Science Foundation of China (NSFC)[12288102, 12393811, 12090040/3] ; National Key R&D Program of China[2021YFA1600401, 2021YFA1600400] ; International Centre of Supernovae, Yunnan Key Laboratory[202302AN360001] ; Swedish Research Council[2022-06725, 2018-05973, 2020-00452] ; Natural Science Foundation of Yunnan Province[202201BC070003] ; Yunnan Fundamental Research Project[202401BC070007]
语种	英语
学科领域	天文学 ; 恒星与银河系
文章类型	Article
出版者	AMER PHYSICAL SOC
出版地	ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
ISSN	2470-0010
URL	查看原文
WOS记录号	WOS:001221668800004
WOS研究方向	Astronomy & Astrophysics ; Physics
WOS类目	Astronomy & Astrophysics ; Physics, Particles & Fields
关键词[WOS]	HYDRODYNAMICS ; NEUTRINO ; ASTEROSEISMOLOGY ; RADIATION ; SIGNALS
引用统计
文献类型	期刊论文
版本	出版稿
条目标识符	http://ir.ynao.ac.cn/handle/114a53/27199
专题	大样本恒星演化研究组中国科学院天体结构与演化重点实验室
作者单位	1.Yunnan Observatories, Chinese Academy of Sciences (CAS), Kunming 650216, China, Key Laboratory for the Structure and Evolution of Celestial Objects, CAS, Kunming 650216, China, and International Centre of Supernovae, Yunnan Key Laboratory, Kunming 650216, China; 2.The Oskar Klein Centre, Department of Astronomy, Stockholm University, AlbaNova, SE-106 91 Stockholm, Sweden
第一作者单位	中国科学院云南天文台
推荐引用方式 GB/T 7714	Cha S,Andersen, Oliver Eggenberger,O’Connor, Evan P.. Unveiling the nature of gravitational-wave emission in core-collapse supernovae with perturbative analysis[J]. PHYSICAL REVIEW D,2024,109(8).
APA	查帅,Andersen, Oliver Eggenberger,&O’Connor, Evan P..(2024).Unveiling the nature of gravitational-wave emission in core-collapse supernovae with perturbative analysis.PHYSICAL REVIEW D,109(8).
MLA	查帅,et al."Unveiling the nature of gravitational-wave emission in core-collapse supernovae with perturbative analysis".PHYSICAL REVIEW D 109.8(2024).

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