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Nature of Ultralong Period Radio Transients: Could They Be Strange Dwarf Pulsars?

文献类型：期刊论文

作者Zhou, Xia1,3,4; Kurban, Abdusattar1,3; Liu, Wen-Tong1,2; Wang, Na1,3,4; Yuan, Ya-Jing1,2
刊名ASTROPHYSICAL JOURNAL
出版日期2025-06-10
卷号986期号:1页码:98
ISSN号0004-637X
DOI10.3847/1538-4357/add268
产权排序1
英文摘要Ultralong period radio transients (ULPTs), with periods of thousands of seconds, challenge conventional pulsar models. We propose that these isolated sources are strange dwarf (SD) pulsars-compact objects with a strange quark matter core surrounded by a normal matter crust. We develop a theoretical framework for SD pulsars and apply it to four known isolated ULPTs: GLEAM-X J162759.5-523504.3, GPM J1839-10, ASKAP J1832-0911 (DART J1832-0911), and ASKAP J193505.1+214841.0 (ASKAP J1935+2148). Our analysis shows that SD pulsars naturally explain both the ultralong periods and coherent radio emission of these sources, which occupy a distinctive region in the magnetic field-period diagram. We find that these objects have surface magnetic fields ranging from 106 to 1010 G, with a consistent lower bound near 106 G that suggests a fundamental threshold for pair production in these magnetospheres. Their radio emission efficiencies (eta rad,rot approximate to 10-4-10-2) align with those of normal pulsars despite their extreme periods. ASKAP J1935+2148 represents a boundary case, positioned below the theoretical death line but still radio active, offering crucial insights into emission mechanisms at extreme periods. The observed X-ray properties of ASKAP J1832-0911, including its two-component spectrum and synchronous X-ray/radio variability, strongly support the SD pulsar model. This framework provides a unified explanation for ULPTs and has significant implications for understanding exotic dense matter in compact objects.
WOS关键词WHITE-DWARF ; X-RAY ; COLOR SUPERCONDUCTIVITY ; TIDAL DEFORMABILITY ; NEUTRON-STAR ; DEATH LINE ; MATTER ; LUMINOSITY ; EQUATION ; MODEL
资助项目TheNational Key R\&D Program of China[2022YFC2205202] ; National Key R&D Program of China[2022D01A363] ; Natural Science Foundation of Xinjiang Uygur Autonomous Region[12288102] ; Natural Science Foundation of Xinjiang Uygur Autonomous Region[12033001] ; Natural Science Foundation of Xinjiang Uygur Autonomous Region[122730283] ; Natural Science Foundation of Xinjiang Uygur Autonomous Region[2023TSYCTD0013] ; National Natural Science Foundation of China[2022A03013-1] ; Major Science and Technology Program of Xinjiang Uygur Autonomous Region[XJYWZ2303] ; Urumqi Nanshan Astronomy and Deep Space Exploration Observation and Research Station of Xinjiang ; Tianchi Talents Project of Xinjiang Uygur Autonomous Region ; Chinese Academy of Sciences
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001505494200001
出版者IOP Publishing Ltd
资助机构TheNational Key R\&D Program of China ; National Key R&D Program of China ; Natural Science Foundation of Xinjiang Uygur Autonomous Region ; National Natural Science Foundation of China ; Major Science and Technology Program of Xinjiang Uygur Autonomous Region ; Urumqi Nanshan Astronomy and Deep Space Exploration Observation and Research Station of Xinjiang ; Tianchi Talents Project of Xinjiang Uygur Autonomous Region ; Chinese Academy of Sciences
源URL[http://ir.xao.ac.cn/handle/45760611-7/7810]  
专题脉冲星研究团组
通讯作者Zhou, Xia
作者单位1.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China
2.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China
3.Xinjiang Key Lab Radio Astrophys, 150 Sci 1 St, Urumqi 830011, Peoples R China
4.State Key Lab Radio Astron & Technol, Beijing 100101, Peoples R China
推荐引用方式
GB/T 7714		 Zhou, Xia,Kurban, Abdusattar,Liu, Wen-Tong,et al. Nature of Ultralong Period Radio Transients: Could They Be Strange Dwarf Pulsars?[J]. ASTROPHYSICAL JOURNAL,2025,986(1):98.
APA Zhou, Xia,Kurban, Abdusattar,Liu, Wen-Tong,Wang, Na,&Yuan, Ya-Jing.(2025).Nature of Ultralong Period Radio Transients: Could They Be Strange Dwarf Pulsars?.ASTROPHYSICAL JOURNAL,986(1),98.
MLA Zhou, Xia,et al."Nature of Ultralong Period Radio Transients: Could They Be Strange Dwarf Pulsars?".ASTROPHYSICAL JOURNAL 986.1(2025):98.

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