Type-I X-ray burst evolution of the new millisecond pulsar MAXI J1816-195 revealed by Insight-HXMT

被引：0

作者：

Wang, P. J. ^{[1
,2
]}

Chen, Y. P. ^{[2
]}

Ji, L. ^{[3
]}

Zhang, S. ^{[2
]}

Zhang, S. N. ^{[1
,2
]}

Kong, L. D. ^{[4
]}

Zhang, L. ^{[2
]}

Tao, L. ^{[2
]}

Qu, J. L. ^{[1
,2
]}

Ge, M. Y. ^{[2
]}

Li, J. ^{[5
,6
]}

Chang, Z. ^{[1
,2
]}

Peng, J. Q. ^{[1
,2
]}

Shui, Q. C. ^{[1
,2
]}

Li, Z. S. ^{[1
,7
]}

机构：

[1] Chinese Acad Sci, Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[2] Chinese Acad Sci, Key Lab Particle Astrophys, Inst High Energy Phys, Beijing 100049, Peoples R China

[3] Sun Yat Sen Univ, Sch Phys & Astron, Zhuhai 519082, Peoples R China

[4] Eberhard Karls Univ Tubingen, Inst Astron & Astrophys, Kepler Ctr Astro & Particle Phys, D-72076 Tubingen, Germany

[5] Univ Sci & Technol China, Dept Astron, CAS Key Lab Res Galaxies & Cosmol, Hefei 230026, Peoples R China

[6] Univ Sci & Technol China, Sch Astron & Space Sci, Hefei 230026, Peoples R China

[7] Xiangtan Univ, Sch Phys & Optoelect, Xiangtan 411105, Peoples R China

来源：

JOURNAL OF HIGH ENERGY ASTROPHYSICS | 2024年 / 41卷

关键词：

X-rays: binaries; X-rays: individual (MAXI J1816-195); THERMONUCLEAR BURSTS; ACCRETION; MODELS; EMISSION; RADIUS; MASS;

D O I：

10.1016/j.jheap.2024.02.004

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report a study of the type-I X-ray bursts and persistent spectrum of the 2022 outburst of the newly discovered accreting millisecond pulsar MAXI J1816-195 observed by Insight-HXMT. The spectra of MAXI J1816-195 are similar to other accreting millisecond pulsars, i.e., a Comptonization shape with an electron temperature of similar to 10 keV. We find that the profiles of type-I X-ray bursts, as well as their spectra, evolve during the outburst. The evolutionary pattern becomes varied towards the end phase of outburst, suggesting a potential correlation with alterations in the burst fuel or the ignition region. Moreover, we find a giant burst, for the first time, with a peak luminosity twice than others and a shorter burst duration. The complete burst sample derived from this research provides more clues in probing the thermonuclear bursts during the outburst of the accreting millisecond pulsar system.

引用

页码：106 / 113

页数：8

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