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arXiv 2411.08020astro-ph.HE
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中子星核心中磁通量排斥的特征

Signatures of magnetic flux expulsion from neutron star cores

University of East Anglia(东英吉利大学);University of Patras(帕特雷大学);University of Maryland, College Park(马里兰大学帕克分校);NASA Goddard Space Flight Center(美国宇航局戈达德太空飞行中心);Center for Research and Exploration in Space Science and Technology, NASA/GSFC(NASA/戈达德太空飞行中心空间科学与技术研究与探索中心);Jodrell Bank Centre for Astrophysics, Department of Physics and Astronomy, The University of Manchester(曼彻斯特大学物理与天文学系乔德雷尔银行天体物理学中心)

S. K. Lander, K. N. Gourgouliatos, Z. Wadiasingh, D. Antonopoulou

AI总结:

研究揭示中子星核心磁通量排斥不完全时,可能产生新的演化分支,解释长周期射电暂现源和快速射电暴,并影响引力波辐射和超导能隙约束。

摘要:

中子星诞生不久后,其核心中的质子开始形成超导体。在地球材料中,超导性的标志是伴随磁通量的排斥,但这种排斥过程在中子星中是否有效仍是一个开放问题——这对脉冲星和磁星的现象学有重大影响。早期的理论论证表明磁通量必须被困在核心中,但磁星模型却依赖于磁通量从核心中被排斥并限制在壳层中,从而在千年内演化。我们证明,如果排斥不完全,中子星将出现一种新的演化分支,可以解释新发现的长周期射电暂现源和较老环境中快速射电暴的特性。一个最近提出的模型,如果能产生这样的磁场拓扑结构,还对引力波辐射有额外影响,并预测了一种特征性的能量释放,如果被观测到,将证实超导性开始时的重新连接作用,并能限制超导质子能隙。

英文摘要:

Shortly after a neutron star is born, the protons in its core begin to form a superconductor. In terrestrial materials, the hallmark of superconductivity is an associated expulsion of magnetic flux, but whether this expulsion process can be effective in neutron stars remains an open question -- one with major implications for the phenomenology of pulsars and magnetars. Earlier theoretical arguments suggested flux must be trapped within the core, yet models of magnetars rely on it being expelled from the core and confined to the crust, where it can evolve on kyr timescales. We show that if expulsion is not complete, a qualitatively new evolutionary branch for neutron stars arises, which can account for the properties of newly discovered long-period radio transients and fast radio bursts in older environments. One recently proposed model that could create such field topologies has additional implications for gravitational wave emission and predicts a characteristic energy release that, if observed, will corroborate the role of reconnection at the onset of superconductivity and can constrain the superconducting proton gap.

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。

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