强磁场中修正URCA过程的中微子产能率  

The effect of strong magnetic field on proton branch of modified URCA process

作　　者：张洁[1] 刘门全[1] 魏丙涛[2,3] 罗志全[1] 

机构地区：[1]西华师范大学理论物理研究所,南充637002 [2]中国科学院国家天文台,云南天文台,昆明650011 [3]中国科学院研究生院,北京100049

出　　处：《物理学报》2008年第9期5448-5451,共4页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:10347008,10778719);四川省教育厅青年基金(批准号:07ZB090);西华师范大学科研基金(批准号:07A004,07A005)资助的课题~~

摘　　要：基于n-p-e模型并考虑修正URCA过程中的质子分支,研究了强磁场对中子星核心区域修正URCA过程中微子产能率的影响.结果表明,强磁场使修正URCA过程的中微子产能率产生明显振荡;与中子分支相比,强磁场对质子分支中微子产能率的影响偏弱,但是它将提高总的中微子产能率.所得结论将有助于进一步研究中子星的冷却机理.The neutrino energy loss rate of modified URCA process in strong magnetic field of neutron star core is investigated based on the n-p-e model. Both neutron and proton branches of modified URCA process are considered. The result shows that a strong magnetic field makes the neutrino energy loss rate of modified URCA process to oscillate intensively. Compared with the neutron branch, neutrino energy loss rate of the proton branch is weaker. But the total neutrino energy loss rate will increase due to the proton branch of modified URCA processes. The result will contribute to the research of cooling mechanism of neutron stars.

关 键 词：中子星 强磁场 修正的URCA过程 

分 类 号：O572.321[理学—粒子物理与原子核物理]