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arXiv 1311.2153astro-ph.HE
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仙后座A中的中子星:状态方程、超流性和焦耳加热

The neutron star in Cassiopeia A: equation of state, superfluidity, and Joule heating

A. Bonanno, M. Baldo, G. F. Burgio, V. Urpin

摘要:

考虑快中微子发射过程,研究仙后座A年轻中子星的热磁演化。特别是,我们认为中子星模型从状态方程计算的框架内的Brueckner-Bethe-Goldstone多体理论和变分方法,并获得与Akmal-Pandharipande-Ravenhall状态方程的模型。结果表明,如果考虑到地壳中小尺度磁场的耗散所产生的焦耳热,则有可能解释仙后座A中中子星的快速冷却机制.因此,我们认为,它是很难把严格的限制超流间隙,如果焦耳加热被认为是。

英文摘要:

The thermomagnetic evolution of the young neutron star in Cassiopea A is studied by considering fast neutrino emission processes. In particular, we consider neutron star models obtained from the equation of state computed in the framework of the Brueckner-Bethe-Goldstone many-body theory and variational methods, and models obtained with the Akmal-Pandharipande-Ravenhall equation of state. It is shown that it is possible to explain a fast cooling regime as the one observed in the neutron star in Cassiopea A if the Joule heating produced by dissipation of the small-scale magnetic field in the crust is taken into account. We thus argue that it is difficult to put severe constraints on the superfluid gap if the Joule heating is considered.

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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