The Research For Weak Equivalent Principle Of Gravitational Wave Event GW150914

Recently,the Laser Interferometer Gravitational-Wave Observatory(LIGO)gravitational wave(GW)observation team detected three suspected gravitational wave signals for the first time,namely GW150914,GW151226 and LVT151012.Among the three signals,the observed data of the GW 150914 is statistically credible with a signal-to-noise ratio of 23.7,a false alarm rate less than 6.0×10-7yr-1,and the significance difference is greater than 5.3?.Through the study on the gravitational radiation of dense binary,LIGO found that GW150914 was from the stellar-mass black hole binary.It is the first time that people observed the direct evidence for the black holes.Therefore,the discovery of GW150914 is significant in physics.It is worth mentioning that,after 0.4 seconds when LIGO found GW150914 0.4s,Fermi satellites discovered GBM transient 150914,the suspected electromagnetic partner of the gravitational wave.This dissertation is based on the excellent characteristics of the GW 150914 signal,and we can use the GW 150914 signal and GBM transient 150914 to carry out the research on weak equivalence principle(weak equivalence principle)(WEP)detection.At the same time,we also research the gravitational Holography.First,the dissertation mainly has five innovative points on the study of gravitational waves which was follows:Firstly,the initial gravitational wave is the gravitational wave observed by the two detectors L1 and HI at the start-up time,we study the differences of WEP to gravitational waves of GW150914 which with different polarized,and find that the difference on post-Newton parameter ?,which represents the weak equivalent principle,is less than 10-10,i.e.??<10-10.This result is two orders of magnitude less than that of the Fast Radio Burst,such as FRB150418 and FRB110220.Secondly,we study the WEP difference between the gravitational wave GW150914 and its electromagnetic partner GBM transient 150914.Considering more realistic astronomical environment,we adopted the short gamma-ray burst(SGRB)proposed by Perna,which is based on the traditional super-Eddington accretion model.The results show that the difference between GW150914 and GBM transient 150914 is also less than 10-10 in the order of magnitude,that is,??<10-10.Thirdly,we study the WEP difference among the gravitational waves of GW 150914 at full frequency with[35Hz,250Hz].It is assumed that the gravitational waves at the full frequency range are assumed to burst at the same time,then the duration time detected is the gravitational delay caused by the gravitational field.The results show us that the differences of WEP to gravitational waves are less than 10-8.that is,??<10-8.Fourthly,we study the WEP difference among electromagnetic waves of GBM transient 150914 at full energy range with11KeV,10MeV].And when the same assumptions are made as on the third point.The results show us that differences of WEP are also less than 10-8.Fifthly,we provide an innovative approach to research the weak equivalent principle by multiple positioning signals.Among the four different WEP violation tests of GW150914 and GBM transient 150914,we adopt eleven 5-degree equal diversion positioning points as well as the best fit position(BFP)with a coordinate of(RA=57deg,Dec=-22deg)provided by Fermi satellite.The researches show that the 12-points provide the same order of magnitude.Then,in terms of the gravitational holography,we construct a 4D Anti-de Sitter solution with the 5D flat space-time and the 4D cosmological constant is derived from the extra dimension.We find that the spacelike extra dimension can provide a positive cosmological constant namely the de Sitter space-time.For the spacelike extra dimension,it provides a negative cosmological constant,namely the AdS space-time.The paper is arranged as follows:The chapters 1and two introduce the background knowledge of the research work,namely general relativity,equivalence principle,gravitational wave and gravitational holography.Chapter 3 introduces our work of weak equivalent principle based on the gravitational wave events GW 150914.Chapter 5 is about our work of WEP based on electromagnetic partner GBM transient 150914.Chapter 6 introduces our work on constructing a new AdS space-time.At last,chapter 6 gives the conclusion and prospect of all the work.