Gravitational Radiation, Inspiraling Binaries, and Cosmology

Details Gravitational Radiation, Inspiraling Binaries, and Cosmology Gravitational Radiation, Inspiraling Binaries, and Cosmology

1993-04-15

arxiv.org/abs/gr-qc/9304020v1

Astrophys.J. 411 (1993) L5-L8

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

13 pages (plus 1 figure), LaTeX/aasms, NU-GR-4

Scientific paper

10.1086/186898

We show how to measure cosmological parameters using observations of inspiraling binary neutron star or black hole systems in one or more gravitational wave detectors. To illustrate, we focus on the case of fixed mass binary systems observed in a single Laser Interferometer Gravitational-wave Observatory (LIGO)-like detector. Using realistic detector noise estimates, we characterize the rate of detections as a function of a threshold signal-to-noise ratio $\rho_0$, the Hubble constant $H_0$, and the binary ``chirp'' mass. For $\rho_0 = 8$, $H_0 = 100$ km/s/Mpc, and $1.4 \msun$ neutron star binaries, the sample has a median redshift of $0.22$. Under the same assumptions but independent of $H_0$, a conservative rate density of coalescing binaries ($8\times10^{-8}\,{\rm yr}^{-1}\,{\rm Mpc}^{-3}$) implies LIGO will observe $\sim 50\,{\rm yr}^{-1}$ binary inspiral events. The precision with which $H_0$ and the deceleration parameter $q_0$ may be determined depends on the number of observed inspirals. For fixed mass binary systems, $\sim 100$ observations with $\rho_0 = 10$ in the LIGO detector will give $H_0$ to 10\% in an Einstein-DeSitter cosmology, and 3000 will give $q_0$ to 20\%. For the conservative rate density of coalescing binaries, 100 detections with $\rho_0 = 10$ will require about 4~yrs.

Affiliated with

Also associated with

No associations

Rating

Gravitational Radiation, Inspiraling Binaries, and Cosmology does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Gravitational Radiation, Inspiraling Binaries, and Cosmology, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gravitational Radiation, Inspiraling Binaries, and Cosmology will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-190869