Rapidly rotating Delta-resonance-admixed hypernuclear compact stars
文献类型：期刊论文
| 作者 | Li, Jia Jie1,2,3; Sedrakian, Armen4,5; Weber, Fridolin6,7 |
| 刊名 | PHYSICS LETTERS B
 |
| 出版日期 | 2020-11-10 |
| 卷号 | 810页码:8 |
| ISSN号 | 0370-2693 |
| 关键词 | Equation of state Heavy baryons Compact stars Rapid rotation Gravitational waves |
| DOI | 10.1016/j.physletb.2020.135812 |
| 通讯作者 | Li, Jia Jie(jiajieli@itp.uni-frankfurt.de) |
| 英文摘要 | We use a set of hadronic equations of state derived from covariant density functional theory to study the impact of their high-density behavior on the properties of rapidly rotating Delta-resonance-admixed hyperonic compact stars. In particular, we explore systematically the effects of variations of the bulk energy isoscalar skewness, Q(sat), and the symmetry energy slope, L-sym, on the masses of rapidly rotating compact stars. With models for equation of state satisfying all the modern astrophysical constraints, excessively large gravitational masses of around 2.5 M-circle dot are only obtained under three conditions: (a) strongly attractive Delta-resonance potential in nuclear matter, (b) maximally fast (Keplerian) rotation, and (c) parameter ranges Q(sat) greater than or similar to 500 MeV and L-sym less than or similar to 50 MeV. These values of Q(sat) and L-sym have a rather small overlap with a large sample (total of about 260) parametrizations of covariant nucleonic density functionals. The extreme nature of requirements (a)-(c) reinforces the theoretical expectation that the secondary object involved in the GW190814 event is likely to be a low-mass black hole rather than a supramassive neutron star. (C) 2020 The Author(s). Published by Elsevier B.V. |
| WOS关键词 | HARTREE-BOGOLIUBOV THEORY ; NEUTRON-STARS ; HYPERONS ; STATE ; CONSTRUCTION ; EQUATION ; ISOBARS ; LAMBDA ; MODELS ; MASSES |
| 资助项目 | European COST Actions PHAROS[CA16214] ; Alexander von Humboldt Foundation ; Deutsche Forschungsgemeinschaft[SE 1836/5-1] ; U.S. National Science Foundation[PHY-1714068] ; U.S. National Science Foundation[PHY-2012152] |
| WOS研究方向 | Astronomy & Astrophysics ; Physics |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:000582969900038 |
| 资助机构 | European COST Actions PHAROS ; Alexander von Humboldt Foundation ; Deutsche Forschungsgemeinschaft ; U.S. National Science Foundation |
| 源URL | [http://119.78.100.186/handle/113462/139533]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Li, Jia Jie |
| 作者单位 | 1.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China 2.Southwest Univ, Sch Phys Sci & Technol, Chongqing 400700, Peoples R China 3.Goethe Univ Frankfurt, Inst Theoret Phys, D-60438 Frankfurt, Germany 4.Frankfurt Inst Adv Studies, D-60438 Frankfurt, Germany 5.Univ Wroclaw, Inst Theoret Phys, PL-50204 Wroclaw, Poland 6.San Diego State Univ, Dept Phys, 5500 Campanile Dr, San Diego, CA 92182 USA 7.Univ Calif San Diego, Ctr Astrophys & Space Sci, La Jolla, CA 92093 USA |
| 推荐引用方式 GB/T 7714 | Li, Jia Jie,Sedrakian, Armen,Weber, Fridolin. Rapidly rotating Delta-resonance-admixed hypernuclear compact stars[J]. PHYSICS LETTERS B,2020,810:8. |
| APA | Li, Jia Jie,Sedrakian, Armen,&Weber, Fridolin.(2020).Rapidly rotating Delta-resonance-admixed hypernuclear compact stars.PHYSICS LETTERS B,810,8. |
| MLA | Li, Jia Jie,et al."Rapidly rotating Delta-resonance-admixed hypernuclear compact stars".PHYSICS LETTERS B 810(2020):8. |
入库方式： OAI收割
来源：近代物理研究所
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