Upper bounds on the low-frequency stochastic gravitational wave background from pulsar timing observations: current limits and future prospects

@article{Jenet2006UpperBO,
  title={Upper bounds on the low-frequency stochastic gravitational wave background from pulsar timing observations: current limits and future prospects},
  author={Fredrick A. Jenet and George Hobbs and Willem van Straten and Richard N. Manchester and Matthew Bailes and Joris P W Verbiest and Russell T. Edwards and Aidan Hotan and John M. Sarkissian and Stephen M. Ord},
  journal={The Astrophysical Journal},
  year={2006},
  volume={653},
  pages={1571-1576}
}
Using a statistically rigorous analysis method, we place limits on the existence of an isotropic stochastic gravitational wave background using pulsar timing observations. We consider backgrounds whose characteristic strain spectra may be described as a power-law dependence with frequency. Such backgrounds include an astrophysical background produced by coalescing supermassive black-hole binary systems and cosmological backgrounds due to relic gravitational waves and cosmic strings. Using the… 

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References

SHOWING 1-10 OF 33 REFERENCES
Gravitational wave experiments and early universe cosmology
Low-Frequency Gravitational Waves from Massive Black Hole Binaries: Predictions for LISA and Pulsar Timing Arrays
The coalescence of massive black hole (BH) binaries due to galaxy mergers provides a primary source of low-frequency gravitational radiation detectable by pulsar timing measurements and by the
Pulsar timing and the upper limits on a gravitational wave background: A Bayesian approach.
TLDR
It is shown that the use of the Neyman-Pearson test of hypotheses cannot, in the general case, provide reliable upper limits on an unknown parameter, and the calculation of the probability distribution and repartition function for using a Bayesian formalism is presented.
Gravitational Waves Probe the Coalescence Rate of Massive Black Hole Binaries
We calculate the expected nHz-μHz gravitational wave (GW) spectrum from coalescing massive black hole (MBH) binaries resulting from mergers of their host galaxies. We consider detection of this
Gravitational radiation from cosmic (super)strings: Bursts, stochastic background, and observational windows
The gravitational wave (GW) signals emitted by a network of cosmic strings are reexamined in view of the possible formation of a network of cosmic superstrings at the end of brane inflation. The
Gravitational Waves from Supermassive Black Hole Coalescence in a Hierarchical Galaxy Formation Model
We investigate the expected gravitational wave emission from coalescing supermassive black hole (SMBH) binaries resulting from mergers of their host galaxies. When galaxies merge, the SMBHs in the
Detecting the Stochastic Gravitational Wave Background Using Pulsar Timing
The direct detection of gravitational waves is a major goal of current astrophysics. We provide details of a new method for detecting a stochastic background of gravitational waves using pulsar
Pulsars and Gravitational Wave Detection
  • G. Hobbs
  • Physics
    Publications of the Astronomical Society of Australia
  • 2005
Abstract The number of known millisecond pulsars has dramatically increased in the last few years. Regular observations of these pulsars may allow gravitational waves with frequencies ∼10−9 Hz to be
Low-Frequency Gravitational Radiation from Coalescing Massive Black Hole Binaries in Hierarchical Cosmologies
We compute the expected low-frequency gravitational wave signal from coalescing massive black hole (MBH) binaries at the center of galaxies in a hierarchical structure formation scenario in which
High-redshift galaxies, their active nuclei and central black holes
We demonstrate that the luminosity function of the recently detected population of actively star-forming galaxies at redshift z = 3 and the B-band luminosity function of quasi-stellar objects (QSOs)
...
...