Gravitational Radiation from Minihole Coalescence and Quadrupole Transitions of Hydrogen-Like Atoms

The minihole coalescences and quadrupole transitions of hydrogen atoms and hydrogen-like graviatoms are considered to be sources of the gravitational background radiation. The total energies of the gravitational radiation of these microsystems have been calculated. This gravitational background proves to be comparable with the observed gravitational radiation from the coalescence of stellar mass black holes. © Published under licence by IOP Publishing Ltd.