Frontiers in Chemistry.
Frontiers Media S. A.
Vol. 8.
2020.
Intensities of the gravitational radiation from a coalescence of miniholes and quadrupole transitions of hydrogen-like atoms are calculated. The total energies of the background gravitational radiation from the coalescence of miniholes and the graviatom quadrupole transitions prove to be comparable with that from the coalescence of two stellar mass black holes. © 2020 World Scientific Publishing Company.