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Searching for strange quark matter objects among white dwarfs

文献类型：期刊论文

作者Kurban, Abdusattar7,8,9; Huang, Yong-Feng6,8; Geng, Jin-Jun5; Zong, Hong-Shi1,2,3,4
刊名PHYSICS LETTERS B
出版日期2022-09-10
卷号832页码:6
ISSN号0370-2693
关键词Compact objects Strange quark matter Strange quark stars
DOI10.1016/j.physletb.2022.137204
通讯作者Kurban, Abdusattar(lompa46@163.com) ; Huang, Yong-Feng(hyf@nju.edu.cn)
英文摘要The ground state of matter may be strange quark matter (SQM), not hadronic matter. A whole sequence of SQM objects, ranging from strange quark stars and strange quark dwarfs to strange quark planets, can stably exist according to this SQM hypothesis. A strange dwarf has a mass similar to that of a normal white dwarf, but could harbor an extremely dense SQM core (with the density as large as similar to 4 x 10(14) gcm(-3)) at the center so that its radius can be correspondingly smaller. In this study, we try to search for strange dwarfs among the observed "white dwarfs" by considering their difference in the mass-radius relation. Seven strange dwarf candidates are identified in this way, whose masses are in the range of similar to 0.02-0.12M(circle dot), with the radii narrowly distributed in similar to 9,000-15,000 km. The seven objects are LSPM J0815+1633, LP 240-30, BD+20 5125B, LP 462-12, WD J1257+5428, 2MASS J13453297+4200437, and SDSS J085557.46+053524.5. Comparing with white dwarfs of similar mass, these candidates are obviously smaller in radius. Further observations with large radio/infrared/optical telescopes on these interesting candidates are solicited. (C) 2022 The Authors. Published by Elsevier B.V.
WOS关键词STARS ; MASS ; LUMINOSITY ; EVOLUTION ; OSCILLATIONS ; DETECTORS ; PULSARS ; CRUST ; DENSE
资助项目Chinese Academy of Sciences (CAS) ; National Key R&D Program of China[2021YFA0718500] ; CAS Light of West China Program[2018-XBQNXZ-B-025] ; National SKA Program of China[2020SKA0120300] ; National Natural Science Foundation of China[11873030] ; National Natural Science Foundation of China[12041306] ; National Natural Science Foundation of China[U1938201] ; National Natural Science Foundation of China[11535005] ; National Natural Science Foundation of China[11690030] ; National Natural Science Foundation of China[11903019] ; National Natural Science Foundation of China[12033001] ; National Natural Science Foundation of China[12041304] ; National Natural Science Foundation of China[11873040] ; Operation, Maintenance and Upgrading Fund for Astronomical Telescopes and Facility Instruments ; Ministry of Finance of China (MOF) ; China Manned Space Project[CMS-CSST-2021-B11]
WOS研究方向Astronomy & Astrophysics ; Physics
语种英语
出版者ELSEVIER
WOS记录号WOS:000847214300001
资助机构Chinese Academy of Sciences (CAS) ; National Key R&D Program of China ; CAS Light of West China Program ; National SKA Program of China ; National Natural Science Foundation of China ; Operation, Maintenance and Upgrading Fund for Astronomical Telescopes and Facility Instruments ; Ministry of Finance of China (MOF) ; China Manned Space Project
源URL[http://ir.xao.ac.cn/handle/45760611-7/4869]  
专题脉冲星研究团组
通讯作者Kurban, Abdusattar; Huang, Yong-Feng
作者单位1.Anhui Normal Univ, Dept Phys, Wuhu 241000, Anhui, Peoples R China
2.Nanjing Inst Proton Source Technol, Nanjing 210046, Jiangsu, Peoples R China
3.Nanjing Univ, Joint Ctr Particle Nucl Phys & Cosmol, Nanjing 210093, Jiangsu, Peoples R China
4.Nanjing Univ, Dept Phys, Nanjing 210093, Jiangsu, Peoples R China
5.Chinese Acad Sci, Purple Mt Observ, Nanjing 210023, Jiangsu, Peoples R China
6.Nanjing Univ, Key Lab Modern Astron & Astrophys, Minist Educ, Nanjing 210023, Jiangsu, Peoples R China
7.Xinjiang Key Lab Radio Astrophys, Urumqi 830011, Xinjiang, Peoples R China
8.Nanjing Univ, Sch Astron & Space Sci, Nanjing 210023, Jiangsu, Peoples R China
9.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Xinjiang, Peoples R China
推荐引用方式
GB/T 7714		 Kurban, Abdusattar,Huang, Yong-Feng,Geng, Jin-Jun,et al. Searching for strange quark matter objects among white dwarfs[J]. PHYSICS LETTERS B,2022,832:6.
APA Kurban, Abdusattar,Huang, Yong-Feng,Geng, Jin-Jun,&Zong, Hong-Shi.(2022).Searching for strange quark matter objects among white dwarfs.PHYSICS LETTERS B,832,6.
MLA Kurban, Abdusattar,et al."Searching for strange quark matter objects among white dwarfs".PHYSICS LETTERS B 832(2022):6.

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