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Prog. Theor. Phys. Vol. 103 No. 6 (2000) pp. 1147-1160
High Frequency Gravitational Radiation and Ringing Down of an Isolated Gravitating System
Toshifumi Futamase*) and
Peter Hogan*,**)
Astronomical Institute
Graduate School of Science, Tohoku
University, Sendai 980-8578, Japan
*Mathematical Physics Department
University College Dublin, Belfield, Dublin 4, Ireland
(Received January 30, 2000)
Abstract:
A qualitative description is given of the gravitational field of an
isolated gravitating system emitting high frequency gravitational
radiation which is ended by a burst of radiation accompanied by matter
travelling with the speed of light, which in turn is followed by an
exponential ringing down to the field of a spherical black hole.
The process we describe could conceivably be applied to the last
stages of a binary neutron star collision. In this case the high frequency
phase coincides with the rapid inspiral motion of the stars. This is
ended by the collision, giving rise to a burst of outgoing radiation
accompanied by light-like matter such as neutrinos, and then the
ringing down follows when the remnant of the collision rapidly
radiates away its wave-front anisotropy, and a spherical black hole is formed.
URL :
http://ptp.ipap.jp/link?PTP/103/1147/
DOI : 10.1143/PTP.103.1147
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