Insight-HXMT Observations of the 2023 Outburst in Aql X-1

doi:10.1088/1674-4527/adc3f4

YNAO OpenIR > 星系类星体研究组

	Insight-HXMT Observations of the 2023 Outburst in Aql X-1
	Yan Z(颜哲)1,2 ; Zhang GB(张国宝)1,2 ; Chen, Yu-Peng 3; Méndez, Mariano 4; Mao JR(毛基荣)1,2 ; Lyu, Ming 5,6; Zhang, Shu 3; Jin, Pei 4
发表期刊	RESEARCH IN ASTRONOMY AND ASTROPHYSICS
	2025-04-01
卷号	25 期号:4
DOI	10.1088/1674-4527/adc3f4
产权排序	第1完成单位
收录类别	SCI
关键词	accretion, accretion disks stars: individual (Aql X-1) stars: neutron X-rays: binaries X-rays: bursts
摘要	We conducted an analysis of the continuum during the onset and initial decline phases of the 2023 outburst in transient neutron star low-mass X-ray binary Aql X-1 using broadband observations from the Hard X-ray Modulation Telescope (Insight-HXMT) instrument. To determine the most appropriate model for the continuum of this outburst, we employed three models to explore the evolution of the spectral component. These observations revealed that the source transitions from the hard state to the soft state. The disk-corona and sphere-corona models both adequately described the spectra of the hard state, while the double blackbody model became preferable after the hard X-ray emission (>25 keV) disappeared during the state transition. In the soft state, the total emission is dominated by the accretion disk and two blackbody components. The combination of the sphere-corona model and the double blackbody model is the most suitable model for this outburst. The results suggest that as the source transitioned into the soft state, the emission from the boundary layer was enhanced, and a hot spot occurred. Notably, we identified two type-I X-ray bursts, one of which exhibited a significant hard X-ray deficit (significance similar to 4.82 sigma), which indicates that Insight-HXMT has the capability to capture the evolution of the corona in a single burst.
资助项目	National Key R&D Program of China[2021YFA0718500]; Yunnan Revitalization Talent Support Program; National Natural Science Foundation of China (NSFC)[12393813]; China Manned Space Project; Hunan Education Department Foundation[21A0096]
项目资助者	National Key R&D Program of China[2021YFA0718500] ; Yunnan Revitalization Talent Support Program ; National Natural Science Foundation of China (NSFC)[12393813] ; China Manned Space Project ; Hunan Education Department Foundation[21A0096]
语种	英语
学科领域	天文学 ; 天体物理学 ; 高能天体物理学 ; 星系与宇宙学
文章类型	Article
出版者	IOP Publishing Ltd
出版地	TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN	1674-4527
URL	查看原文
WOS记录号	WOS:001463022900001
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
关键词[WOS]	X-RAY-BURSTS ; SOFT STATE TRANSITION ; BINARY AQUILA X-1 ; NEUTRON-STAR ; ACCRETION GEOMETRY ; SPECTRAL STATES ; TEMPORAL PROPERTIES ; XTE J1701-462 ; BEHAVIOR ; CORONA
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/114a53/28254
专题	星系类星体研究组
作者单位	1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, China; [email protected]; 2.University of Chinese Academy of Sciences, Beijing 100049, China; 3.Key Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China; 4.Kapteyn Astronomical Institute, University of Groningen, P.O. BOX 800, 9700 AV Groningen, The Netherland; 5.Department of Physics, Xiangtan University, Xiangtan 411105, China; 6.Key Laboratory of Stars and Interstellar Medium, Xiangtan University, Xiangtan 411105, China
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	Yan Z,Zhang GB,Chen, Yu-Peng,et al. Insight-HXMT Observations of the 2023 Outburst in Aql X-1[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2025,25(4).
APA	颜哲.,张国宝.,Chen, Yu-Peng.,Méndez, Mariano.,毛基荣.,...&Jin, Pei.(2025).Insight-HXMT Observations of the 2023 Outburst in Aql X-1.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,25(4).
MLA	颜哲,et al."Insight-HXMT Observations of the 2023 Outburst in Aql X-1".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 25.4(2025).

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