High-Energy Astrophysics American and Soviet Perspectives/Proceedings from the U.S.-U.S.S.R. Workshop on High-Energy Astrophysics (1991) / Chapter Skim
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THE EVOLUTION OF THE GRAVITATIONAL RADIATION FROM STELLAR COMPONENTS OF GALAXIES
THE EVOLUTION OF THE GRAVITATIONAL RADIATION FROM STELLAR COMPONENTS OF GALAXIES
Pages 261-269
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From page 261... ...
OSMINKIN, M.E. PROKHOROV Sternberg Astronomical Institute ABSIrRACT This paper discusses the evolution of gravitational waves spectra produced by binary stars, supernova explosions and coalescences of binary compact stars in outer galaxies.
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From page 262... ...
The second sort of GW sources can be connected with catastrophic processes occunug during the stellar evolution. First of all, these are the SNE and the coalescence of binary compact objects (white dwarves, neutron stars, or black holes)
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From page 263... ...
. This drop can be explained both by the binanes' disruption due to the SEE and by a diminishing mass in binary stars in mass through the stellar wind and common envelope processes.
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From page 264... ...
. 9 7 ,,/ I, 109 yrs -6 -5 -4 8 1 _ -22 0 _ -22.5 -23.0 _ 19`, Hz 1 _ ' 1 3 J 4 _ 5 FIGURE 1 The evolution of GW spectrum from a galaxy with [-like star formation rate.
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From page 265... ...
In these calculations we have taken into account the redshift of gravitational radiation and a curvature of the universe (Zel'dovich and Novikov 1970~. The influence of massive black holes (BH)
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From page 266... ...
The shape of this spectral feature strongly depends on the assumptions about the massive BH formation and can sufficiently differ from this rough model However, the existence of such a spectral feature could in principle be used as an indicator for massive BH presence. In Figure 4, the event rate for GW pulses versus time is presented for a galas with the parameters described above and with a [-like star formation function The type II SN results from the collapse of massive stars (M > TOME)
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From page 267... ...
. i ~ Illll ~11111111 1 107 1o8 109 1010 t,yrs FIGURE 4 The rate of supernova explosions and of white dwarves coalescences in a galaxy with [-like star formation rate.
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From page 268... ...
Integrating these expressions witch the star formation rate functions for ellipticals and spirals and integrating over the whole space where the galaxies are thought to exist (z < 3) and using cosmological parameters described above, we have obtained the rate of arriving pulses with an amplitude not less than that given by the different ldods of SNe and of galaxies, be., the rate of me event's registration on a GW detector with the given sensitivity.
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From page 269... ...
1983. Black Holes, White Dwarves, and Neutron Stars.
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