Constraints on axion-like particles and nucleon pairing in dense matter from the hot neutron star in HESS J1731-347
Constraints on axion-like particles and nucleon pairing in dense matter from the hot neutron star in HESS J1731-347
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DOI：
10.1103/physrevc.98.035802
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发表时间：
2018-09-20
影响因子：
3.1
通讯作者：
Reddy, Sanjay
中科院分区：
文献类型：
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作者：
Beznogov, Mikhail, V;Rrapaj, Ermal;Reddy, Sanjay
如果超新星残余HESS J1731-347中的热年轻中子星的热演化是由中微子发射驱动的，它对光的耦合提供了严格的约束(质量为7.7 × 10(-20) (90% c.l))，由轫致辐射反应n + n -> n + n + a引起的轴子冷却速度太快，无法解释观测到的高表面温度。这意味着Pecci-Quinn尺度或轴子衰变常数f(a) > 6.7 x 10(7) GeV对于KSVZ轴子和f(a) > 1.7 x 10(9) GeV对于DFSZ轴子。这颗中子星的高温也使我们能够收紧对核子对间隙大小的限制。
If the thermal evolution of the hot young neutron star in the supernova remnant HESS J1731-347 is driven by neutrino emission, it provides a stringent constraint on the coupling of light (mass 7.7 x 10(-20) (90% c.l.) the axion cooling from the bremsstrahlung reaction n + n -> n + n + a is too rapid to account for the high observed surface temperature. This implies that the Pecci-Quinn scale or axion decay constant f(a) > 6.7 x 10(7) GeV for KSVZ axions and f(a) > 1.7 x 10(9) GeV for DFSZ axions. The high temperature of this neutron star also allows us to tighten constraints on the size of the nucleon pairing gaps.