PSR J1953+1844 Probably Being the Descendant of an Ultracompact X-Ray Binary

IF 8.8 1区物理与天体物理 Q1 ASTRONOMY & ASTROPHYSICS

Astrophysical Journal Letters Pub Date : 2023-10-01 DOI:10.3847/2041-8213/acfe6e

Z. L. Yang, J. L. Han, W. C. Jing, W. Q. Su

{"title":"PSR J1953+1844 Probably Being the Descendant of an Ultracompact X-Ray Binary","authors":"Z. L. Yang, J. L. Han, W. C. Jing, W. Q. Su","doi":"10.3847/2041-8213/acfe6e","DOIUrl":null,"url":null,"abstract":"Abstract PSR J1953+1844 (i.e., M71E) is a millisecond pulsar in a 53 minute binary orbit discovered by the Five-hundred-meter Aperture Spherical radio Telescope. The mass function from pulsar timing is 2.3 × 10 −7 M ⊙ . The possible redback origin of this system has been discussed by Pan et al. We discuss here an alternative evolution track for this binary system, namely that PSR J1953+1844 is a descendant of an ultracompact X-ray binary (UCXB), which has a hydrogen-poor donor accreting onto a neutron star (NS) with an orbital period of ≤1 hr. We noticed that some UCXB systems hold an accreting millisecond X-ray pulsar (AMXP) and a donor with a mass of about 0.01 M ⊙ . M71E has a very similar orbit to those of AMXPs, indicating that it might be evolved from a UCXB similar to PSR J1653–0158. The companion star of M71E should be significantly bloated and it most probably has a carbon and oxygen composition, otherwise a low inclination angle of the orbit is required for a helium companion. The discovery of this M71E binary system may shed light on when and how an NS in a UCXB turns into a radio pulsar.","PeriodicalId":55567,"journal":{"name":"Astrophysical Journal Letters","volume":"152 1","pages":"0"},"PeriodicalIF":8.8000,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Astrophysical Journal Letters","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.3847/2041-8213/acfe6e","RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ASTRONOMY & ASTROPHYSICS","Score":null,"Total":0}

引用次数: 0

Abstract

Abstract PSR J1953+1844 (i.e., M71E) is a millisecond pulsar in a 53 minute binary orbit discovered by the Five-hundred-meter Aperture Spherical radio Telescope. The mass function from pulsar timing is 2.3 × 10 −7 M ⊙ . The possible redback origin of this system has been discussed by Pan et al. We discuss here an alternative evolution track for this binary system, namely that PSR J1953+1844 is a descendant of an ultracompact X-ray binary (UCXB), which has a hydrogen-poor donor accreting onto a neutron star (NS) with an orbital period of ≤1 hr. We noticed that some UCXB systems hold an accreting millisecond X-ray pulsar (AMXP) and a donor with a mass of about 0.01 M ⊙ . M71E has a very similar orbit to those of AMXPs, indicating that it might be evolved from a UCXB similar to PSR J1653–0158. The companion star of M71E should be significantly bloated and it most probably has a carbon and oxygen composition, otherwise a low inclination angle of the orbit is required for a helium companion. The discovery of this M71E binary system may shed light on when and how an NS in a UCXB turns into a radio pulsar.

查看原文本刊更多论文

PSR J1953+1844可能是超紧凑x射线双星的后代

PSR J1953+1844(即M71E)是500米口径球面射电望远镜在53分钟双星轨道上发现的一颗毫秒脉冲星。脉冲星计时的质量函数为2.3 × 10−7 M⊙。Pan等人讨论了该系统可能的红背起源。我们在这里讨论了这个双星系统的另一种演化轨迹，即PSR J1953+1844是一个超紧凑x射线双星(UCXB)的后代，它有一个贫氢的供体吸积到轨道周期≤1小时的中子星(NS)上。我们注意到一些UCXB系统拥有一个吸积的毫秒x射线脉冲星(AMXP)和一个质量约为0.01 M⊙的供体。M71E的轨道与amxp非常相似，这表明它可能是从类似于PSR J1653-0158的UCXB演变而来的。M71E的伴星应该是明显膨胀的，它很可能是由碳和氧组成的，否则一个氦伴星就需要一个低倾角的轨道。M71E双星系统的发现可能会揭示UCXB中的NS何时以及如何转变为射电脉冲星。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Astrophysical Journal Letters ASTRONOMY & ASTROPHYSICS-

CiteScore

14.10

自引率

6.30%

发文量

513

审稿时长

2-3 weeks

期刊介绍： The Astrophysical Journal Letters (ApJL) is widely regarded as the foremost journal for swiftly disseminating groundbreaking astronomical research. It focuses on concise reports that highlight pivotal advancements in the field of astrophysics. By prioritizing timeliness and the generation of immediate interest among researchers, ApJL showcases articles featuring novel discoveries and critical findings that have a profound effect on the scientific community. Moreover, ApJL ensures that published articles are comprehensive in their scope, presenting context that can be readily comprehensible to scientists who may not possess expertise in the specific disciplines covered.