Dark matter heating in strange stars  

作　　者：HUANG Xi WANG Wen ZHENG XiaoPing 

机构地区：[1]Institute of Astrophysics, Central China Normal University [2]School of Electronic and Electrical Engineering, Wuhan Textile University

出　　处：《Science China(Physics,Mechanics & Astronomy)》2014年第4期791-795,共5页中国科学：物理学、力学、天文学（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.11103004,11073008,and 11178001);the Self-Determined Research Funds of CCNU(Grant no.CCNU09A01020)from the Colleges’Basic Research and Operation of NO of China

摘　　要：We study the effect of dark matter heating on the temperature of typical strange star(SS hereafter)(M=1.4 M⊙,R=10 km)in normal phase(NSS hereafter)and in a possible existing colour-flavour locked(CFL)phase(CSS hereafter).For NSS,the influence of dark matter heating is ignored until roughly 107yr.After 107yr,the dark matter heating is dominant that significantly delays the star cooling,which maintains a temperature much higher than that predicted by standard cooling model for old stars.Especially for CSS,the emissivity of dark matter will play a leading role after roughly 104yr,which causes the temperature to rise.This leads to the plateau of surface temperature appearing in～106.5yr which is earlier than that of NSS(～107yr).We study the effect of dark matter heating on the temperature of typical strange star（SS hereafter）（M=1.4 M⊙,R=10 km）in normal phase（NSS hereafter）and in a possible existing colour-flavour locked（CFL）phase（CSS hereafter）.For NSS,the influence of dark matter heating is ignored until roughly 10^7yr.After 10^7yr,the dark matter heating is dominant that significantly delays the star cooling,which maintains a temperature much higher than that predicted by standard cooling model for old stars.Especially for CSS,the emissivity of dark matter will play a leading role after roughly 10^4yr,which causes the temperature to rise.This leads to the plateau of surface temperature appearing in～10^6.5yr which is earlier than that of NSS（～10^7yr）.

关 键 词：stellar evolution dark matter QUARKS 

分 类 号：P145.9[天文地球—天体物理]