Investigation On The Internal Energy-powered Neutron Stars

Internal Neutron Stars are those sources whose luminosity is greater than the rate of energy loss due to spin deceleration.There are other ways of energy supply.The inner neutron stars can be divided into central compact objects(CCO),magnetars and x-ray dim isolated neutron stars(XDINS).Both CCO and magnetars are young sources,and both are sources within supernova remnants.The evolution process of CCO in the research center can provide a deep understanding of the evolution process of the entire pulsar,and the sources between the death line and the acceleration line in the whole B-P diagram can be roughly understood,in order to have a basic understanding of the pulsar system.The study of magnetars Fast Radio Burst(FRB)events can provide ideas for the study of fast radio bursts in the future.The study of dim isolated neutron stars provides support for the study of subsequent isolated neutron stars.Researching these young pulsars is important for the study of stellar cooling.We try to analyze the origin of CCO by studying the magnetic field,spin period and other physical properties of CCO.First,the average spin period of CCO is similar to that of normal remnant pulsars,but the average surface magnetic field intensity of CCO(B=5.4×1010Gs)is about two orders of magnitude lower than that of normal remnant pulsars(B=7.7×1012Gs).Meanwhile,almost all normal remnant pulsars are distributed above the Eddington accretion acceleration line,while all CCOs are distributed below the spin acceleration line.Therefore,it is suspected that CCO may originate from the accretion acceleration process of binary stars.Secondly,we analyze the possible binary evolution process of CCOs based on recycling theory of the neutron stars:In the binary,a CCO can accrete the ?M?10-2M? matter with the accretion rate of M=1017g·s-1 during the time of 106yrs,then its spin period will decrease from P=10s to P=0.1s and its surface magnetic field strength will decrease from B0=1012 Gs to B=1010Gs.Considering that the evolution timescale of 106yr is far longer than the age of the SNRs containing CCOs(0.3-7kyr),we suppose that CCOs may be the products of the supernova of the first star in the binary,and the binary is disintegrated during the supernova of the second star,which leaves a CCO and the SNR of the second star.This model predicts that there may exit a young normal pulsar near the CCO(P=0.02s,B=1012Gs),and we expect that the radio telescope and high energy detector can survey these sources in the futureWe try to analyze cycles of magnetic,optical,magnetic field,age characteristics and FRB do research statistics of the system,and try to analyze the relationship between the magnetar and XDINS,because the mean period of the magnetar is P=6.7219s,the mean magnetic field intensity is B=4.3194×1014Gs,the age is 104years,while the mean period of the dark X-ray pulsar isP=8.5900s,the mean magnetic field intensity is B=8.200×1013Gs,the age is 106 years.Therefore,we suspect that dark X-ray pulsars are the middle ages of magnetars.By calculating the magnetic energy density of the magnetar,the high energy burst energy of the magnetar is obtained,which is related to the fast radio burst of the magnetarIn the future,with the generation of high-energy telescopes and the continued occurrence of FRBs,there will certainly be more results on the magnetar FRBs.