arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1702.05280astro-ph.HE
收藏

双脉冲星J0737-3039的XMM-牛顿长期研究:谱分析

Long-term study of the Double Pulsar J0737-3039 with XMM-Newton: spectral analysis

Elise Egron, Alberto Pellizzoni, Andy Pollock, Noemi Iacolina, Nazar Ikhsanov, Andrea Possenti, Marco Marongiu

摘要:

我们提出了一个长期的光谱监测的独特的双脉冲星二进制PSR J 0737 -3039对应于两个“大型计划”由XMM牛顿在2006年和2011年进行。尽管在所考虑的时间跨度(约25度)内存在显著的相对论自旋进动,但脉冲星软X射线辐射的光谱变化在5年内并不明显。我们提供,第一次,硬X射线发射的证据,从系统中的5-8千电子伏的能量带。标准光谱分析耦合到能量依赖的空间分析,以确认这种过剩,最有可能归因于铁线发射。在6.4-6.97 keV的Fe K-alpha发射线在非吸积双星系统中是闻所未闻的,可以证明存在一个遗迹盘,该遗迹盘在超新星爆炸中幸存下来,终止了双脉冲星的恒星祖先的生命。这个系统中遗迹盘的存在加强了关于其他特殊类型的孤立中子星周围存在类似结构的猜测。

英文摘要:

We present a long-term spectral monitoring of the unique Double Pulsar binary PSR J0737-3039 corresponding to two "Large Programs" performed by XMM-Newton in 2006 and 2011. Spectral variability of pulsar emission in soft X-rays is not evident over 5 years, despite the significant relativistic spin precession in the considered time span (about 25deg). We provide, for the first time, evidence of hard X-ray emission from the system in the 5-8 keV energy band. The standard spectral analysis was coupled to the energy dependent spatial analysis to confirm this excess, most likely ascribed to iron line emission. The Fe K-alpha emission line at 6.4-6.97 keV was previously unheard-of in non-accreting binary systems and could testify to the presence of a relic disk that survived the supernova explosions that terminated the lives of the Double Pulsar's stellar progenitors. The existence of a relic disk in this system reinforces speculation about the presence of similar structures around other peculiar classes of isolated neutron stars.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑