Model-dependence of neutrino emissivities and neutrino luminosities of neutron stars from the direct Urca processes and the modified Urca processes

doi:10.1016/j.nuclphysa.2017.03.001

	Model-dependence of neutrino emissivities and neutrino luminosities of neutron stars from the direct Urca processes and the modified Urca processes
	Yin, Peng 1; Fan, Xiaohua 1,2; Dong, Jianmin 1; Guo, Wenmei 3; Zuo, Wei1,2
刊名	NUCLEAR PHYSICS A
	2017-05-01
卷号	961 页码:200-215
关键词	Neutron stars Forces in hadronic systems and effective interactions Elementary particle processes Nuclear matter aspects of neutron stars Symmetry energy Equations of state of nuclear matter
ISSN号	0375-9474
DOI	10.1016/j.nuclphysa.2017.03.001
英文摘要	The neutrino emissivities in,B-stable neutron star matter from the direct Urca (DU) processes and the modified Urca (MU) processes have been investigated by adopting 26 Skyrme interactions. Several physical quantities related to the MU processes and the DU processes have been calculated and discussed. The model-dependence of the neutrino emissivities from the DU processes is found to stem mainly from the model-dependence of the effective mass, while the neutrino emissivities from the MU processes are determined by the competition between the effects of the symmetry energy and the effective mass. Besides, we have investigated the total neutrino luminosities of neutron stars, with the masses of 1.2, 1.4, 1.6 and 1.8M, from the DU processes and the MU processes. The neutrino luminosity of a neutron star is found to be primarily determined by whether the electron DU process is allowed or not. As long as the electron DU process can occur, the total luminosity turns out to be 5 to 8 orders of magnitude larger as compared with the case that the DU process is forbidden, which indicates that the strongest model -dependence of the neutrino luminosity comes from that of the symmetry energy and the equation of state (EOS) of neutron star matter. In the case that the DU processes are allowed, the discrepancy of the calculated neutrino luminosity using various Skyrme interactions remains noticeable, which is essentially attributed to the model -dependence of the symmetry energy, the EOS of NS matter and the effective masses. (C) 2017 Elsevier B.V. All rights reserved.
资助项目	National Natural Science Foundation of China[11435014] ; National Natural Science Foundation of China[11175219] ; 973 Program of China[2007CB815004] ; Knowledge Innovation Project of the Chinese Academy of Sciences[KJCX2-EW-N01]
WOS关键词	NUCLEAR SYMMETRY ENERGY ; CASSIOPEIA ; EMISSION ; SURFACE ; PHYSICS ; SUN
WOS研究方向	Physics
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000400534600011
资助机构	National Natural Science Foundation of China ; 973 Program of China ; Knowledge Innovation Project of the Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/44947]
专题	中国科学院近代物理研究所
通讯作者	Yin, Peng
作者单位	1.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Shanxi Univ, Inst Theoret Phys, Taiyuan 030006, Peoples R China
推荐引用方式 GB/T 7714	Yin, Peng,Fan, Xiaohua,Dong, Jianmin,et al. Model-dependence of neutrino emissivities and neutrino luminosities of neutron stars from the direct Urca processes and the modified Urca processes[J]. NUCLEAR PHYSICS A,2017,961:200-215.
APA	Yin, Peng,Fan, Xiaohua,Dong, Jianmin,Guo, Wenmei,&Zuo, Wei.(2017).Model-dependence of neutrino emissivities and neutrino luminosities of neutron stars from the direct Urca processes and the modified Urca processes.NUCLEAR PHYSICS A,961,200-215.
MLA	Yin, Peng,et al."Model-dependence of neutrino emissivities and neutrino luminosities of neutron stars from the direct Urca processes and the modified Urca processes".NUCLEAR PHYSICS A 961(2017):200-215.