Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21323003s&link_type=abstract
American Astronomical Society, AAS Meeting #213, #230.03; Bulletin of the American Astronomical Society, Vol. 41, p.489
Astronomy and Astrophysics
Astronomy
Scientific paper
During the final moments of a binary black hole (BH) merger, the gravitational wave (GW) flux emitted from the system is greater than the combined electromagnetic luminosity of the entire observable universe. However, the extremely weak coupling between GWs and matter makes these waves very difficult to detect directly. Fortunately, the inspiraling BH system will interact strongly--on a purely Newtonian level--with any surrounding matter in the host galaxy, and this matter can in turn produce unique electromagnetic signals detectable at Earth. The nature of these signals varies widely, from the impressions left on stellar density distributions to the production of runaway quasars that escape from the galactic center at speeds of thousands of km/s. I will describe a number of these different signatures, and discuss their expected event rates and potentials for positive identification, long before direct GW detectors like LISA come online.
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