  Spectra of unbound electron-positron pairs (dielectrons, in brief) and
photons from decays of parapositronia produced in ultraperipheral collisions of
electrically charged objects are calculated. Their shapes at energies of the
NICA collider are demonstrated. Soft dielectrons and photons are abundantly
produced. The relevance of these processes to the astrophysical problem of
cooling electron-positron pairs and the intense emission of 511 keV photons
from the Galactic center is discussed.
