Speaker
Description
It has been recently shown that gravitational waves incident on a compact object binary can stimulate excess gravitational wave emission under resonant conditions. In this work, we calculate the waveform of this stimulated emission. We investigate whether repeated stimulated emission of gravitational waves could lead to an exponential growth in coherent gravitational wave strength in a phenomenon analogous to a laser. In particular, we predict conditions under which this Gravitational Radiation Amplified by Stimulated Emission of Radiation (GRASER) could produce detectable signals from binary Primordial Black Holes (bPBHs) in the very early universe. The required conditions include a universe sufficiently dense in bPBHs such that individual binaries could undergo multiple incidents of stimulated emission before the interaction freezes out.
| Other topic / keywords: | Primordial Black Holes |
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