首页|On the Formation of the Double Neutron Star Binary PSR J1846-0513

On the Formation of the Double Neutron Star Binary PSR J1846-0513

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The double neutron star PSR J1846-0513 is discovered by the Five-hundred-meter Aperture Spherical radio Telescope(FAST)in Commensal Radio Astronomy FAST Survey.The pulsar is revealed to be harbored in an eccentric orbit with e=0.208 and an orbital period of 0.613 day.The total mass of the system is constrained to be 2.6287(35)M☉,with a mass upper limit of 1.3455 M☉ for the pulsar and a mass lower limit of 1.2845 M☉ for the companion star.To reproduce its evolution history,we perform a 1D model for the formation of PSR J1846-0513 whose progenitor is assumed to be neutron star—helium(He)star system via MESA code.Since the large eccentricity is widely believed to originate from an asymmetric supemova explosion,we also investigate the dynamical effects of the supernova explosion.Our simulated results show that the progenitor of PSR J1846-0513 could be a binary system consisting of a He star of 3.3-4.0 M☉ and a neutron star in a circular orbit with an initial period of～0.5 day.

stars:evolutionstars:neutron(stars:)binaries:generalstars:individual(PSR J1864-0513)

Long Jiang、Kun Xu、Shuai Zha、Yun-Lang Guo、Jian-Ping Yuan、Xiang-Li Qian、Wen-Cong Chen、Na Wang

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School of Science,Qingdao University of Technology,Qingdao 266525,China

Xinjiang Astronomical Observatory,Chinese Academy of Sciences,Urumqi 830011,China

School of Physics and Electrical Information,Shangqiu Normal University,Shangqiu 476000,China

Yunnan Observatories,Chinese Academy of Sciences,Kunming 650216,China

Department of Astronomy,Nanjing University,Nanjing 210023,China

Department of Intelligent Engineering,Shandong Management University,Jinan 250357,China

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2024

10.1088/1674-4527/ad8d1b

天文和天体物理学研究
中国科学院国家天文台

天文和天体物理学研究

CSTPCD
影响因子：0.406
ISSN：1674-4527
年,卷(期)：2024.24(11)