Stochastic background of gravitational waves

Abstract

A continuous stochastic background of gravitational waves (GWs) for burst sources is produced if the mean time interval between the occurrence of bursts is smaller than the average time duration of a single burst at the emission, i.e., the so called duty cycle must be greater than one. To evaluate the background of GWs produced by an ensemble of sources, during their formation, for example, one needs to know the average energy flux emitted during the formation of a single object and the formation rate of such objects as well. In many cases the energy flux emitted during an event of production of GWs is not known in detail, only characteristic values for the dimensionless amplitude and frequencies are known. Here we present a shortcut to calculate stochastic backgrounds of GWs produced from cosmological sources. For this approach it is not necessary to know in detail the energy flux emitted at each frequency. Knowing the characteristic values for the ``lumped'' dimensionless amplitude and frequency we show that it is possible to calculate the stochastic background of GWs produced by an ensemble of sources.

6 pages, 4 eps figures, (Revtex) Latex. Physical Review D (in press)

References in corpus (4)

• The Star Formation History of Field Galaxies
• On the Evolution of the Cosmic Supernova Rates
• Stochastic background of gravitational waves generated by a cosmological population of young, rapidly rotating neutron stars
• Gravitational Wave Background from a Cosmological Population of Core-Collapse Supernovae

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• Possible Strong Gravitational Wave Sources for the LISA Antenna
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• Stochastic Gravitational-Wave Background from Stellar Core-Collapse Events