arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2609.00176astro-ph.HEastro-ph.SR

X射线中年轻与年老天体的肖像:新毫秒脉冲星探测及年轻中子星的更新表征

Portraits of the young and old in X-ray: New millisecond pulsar detections and updated characterization of young neutron stars

Wynn C. G. Ho, Patrick H. Wang, Sebastien Guillot

首次发表
浏览论文内容

中文总结 AI 辅助

本研究通过分析钱德拉与NuSTAR数据,新探测到两颗毫秒脉冲星的X射线辐射,更新了一颗年轻脉冲星的自旋模型,还提升了对G18.95-1.1中超新星遗迹内年轻中子星光谱的测量精度。

中文摘要 AI 辅助

我们对钱德拉(Chandra)和核光谱望远镜阵列(NuSTAR)的新数据及存档数据展开分析,研究对象包括两颗年老毫秒脉冲星、一颗年轻高能量脉冲星和一颗年轻中子星。PSR J1810-0623是一颗新近发现的4.55毫秒射电脉冲星,其伴星可能为碳氧白矮星;我们利用钱德拉的一次新的短时长HRC-I观测,首次 tentative(暂定)地在X射线波段探测到该脉冲星,其亮度微弱,表明距离更符合其色散量推断的更远距离(约1千秒差距)。PSR J1933-6211是一颗3.54毫秒射电脉冲星,同样拥有碳氧白矮星伴星;我们在存档的HRC-S图像中首次实现其X射线探测,测得其X射线光度与1.9倍太阳质量的脉冲星PSR J1614-2230相近。接下来是PSR J1813-1749,这是一颗年龄为1000至2000年的脉冲星,拥有已知最高的自旋下降光度之一;我们利用2025年NuSTAR和2026年钱德拉ACIS-S数据测得其自旋周期为44.7毫秒,并更新了其自旋演化模型,首次展示了该脉冲星在3-79千电子伏能段的脉冲轮廓,且发现该脉冲星及其脉冲风云在2018年与2025年观测期间的光谱未发生显著变化。最后,针对超新星遗迹G18.95-1.1中年龄为5000至10000年的中子星CXOU J182913.1-125113,我们结合2009年和2024年的ACIS-I观测数据,以更精准地测量该中子星的光谱。

英文摘要

We present analyses of new and archival Chandra and NuSTAR data on two old millisecond pulsars, a young highly-energetic pulsar, and a young neutron star. PSR J1810-0623 is a recently-discovered 4.55 ms radio pulsar in a binary with a possible carbon-oxygen white dwarf companion. We tentatively detect the pulsar for the first time in X-ray using a new short Chandra HRC-I observation. Its faintness suggests a distance more in accord with the further (~1 kpc) of its dispersion measure-inferred distances. PSR J1933-6211 is a 3.54 ms radio pulsar also with a carbon-oxygen white dwarf companion. Our first-time X-ray detection in an archival HRC-S image indicates its X-ray luminosity is similar to that of the 1.9 Msun pulsar PSR J1614-2230. Next, PSR J1813-1749 is a 1-2 kyr pulsar with one of the highest known spin-down luminosities. We measure its spin period of 44.7 ms using 2025 NuSTAR and 2026 Chandra ACIS-S data and update its spin evolution model. We show for the first time the pulse profile of PSR J1813-1749 at 3-79 keV, and we find that the spectra of the pulsar and pulsar wind nebula at these energies did not change significantly between observations in 2018 and 2025. Finally, for the 5-10 kyr neutron star CXOU J182913.1-125113 in the supernova remnant G18.95-1.1, we combine ACIS-I observations from 2009 and 2024 to better measure the neutron star's spectrum.

发表机构

  • Haverford College(哈弗福德学院)
  • Université de Toulouse, CNES, CNRS, IRAP(图卢兹大学、法国国家空间研究中心、法国国家科学研究中心、天体物理研究所)

机构由 AI 辅助整理,请以论文原文为准。

补充信息

↑