1998/09/03 by William A. Hiscock
Physics and Astronomy · #Astronomy and Astrophysical Research #Cosmology and Gravitation Theories #Pulsars and Gravitational Waves Research #gr-qc
paper · pdf · doi:10.1086/311776
8 pages + 2 ps figures; AASTeX
arxiv created 1998/09/03 · openalex publication_date 1998/12/20 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/31
Nakamura et al. have recently estimated the initial distribution of binary MACHOs in galactic halos, assuming that the MACHOs are primordial black holes of mass ~0.5 M ☉ , and considered their coalescence as a possible source for ground-based interferometer gravitational wave detectors such as LIGO. Evolving their binary distribution forward in time to the present, the low-frequency (10 −5 Hz< f <10 −1 Hz) spectrum of gravitational waves associated with such a population of compact binaries is calculated. The resulting gravitational waves would form a strong stochastic background in proposed space interferometers such as LISA and the OMEGA. Low-frequency gravitational waves are likely to become a key tool for determining the properties of binaries within the dark MACHO population.