Event Rates of Extreme Mass Ratio Inspirals (EMRIs) and Intermediate Mass Ratio Inspirals (IMRIs) in Milky Way Galaxy

摘要

Numerous galaxies host a massive black hole (MBH) in their galactic nuclei enclosed by dense stellar population. extreme mass-ratio inspirals (EMRIs) and intermediate mass-ratio inspirals (IMRIs) are the most compelling sources of gravitational radiation detectable by laser interferometer space antenna (LISA) that will have the capability to observe the entire sky probe the gravitational Universe. EMRIs and IMRIs are the prime source for LISA encompasses the whirling of COs, typically stellar-mass black holes (BH), neutron stars (NS), white dwarfs (WD) and intermediate mass black holes (IMBH) with diminishing mass ratio and prolonged cycles, emitting gravitational radiations lasting for several years. We investigate the dependence of signal-to-noise ratios (SNRs) to parameters and make inferences regarding the properties of Galactic EMRIs. Constraining the intrinsic parameters of analytical kludge (AK) waveform model, we employ the well-calibrated stellar properties of the MBH to extrapolate the scaling relation that contemplates fiducial fit for back-of-envelop computations of SNRs. Additionally, we enumerate the averaged probability of 1.43 EMRI events to occur in Milky Way (MW) hosting a MBH, by employing the known astrophysical stellar dynamics of stellar population near the MBH and considering the detector's sensitivity.