EntityQ4135720· pop 13· linked from 121 articlesGeonSign in to savenonsingular electromagnetic or gravitational wave held together in a confined region by the gravitational attraction of its own field energyConnectionsgravitational waveEntitystellar populationEntityPhysical ReviewEntityexotic starEntityKerr–Newman metricEntityenergyEntityBlack holeConceptgravityEntityBig BangEntityquantum mechanicsEntitygeneral relativityEntityelectromagnetic radiationEntityelementary particleEntitysupernovaEntitydigital object identifierEntitydark matterEntityneutron starEntitywhite dwarfEntityquasarEntitygravitonEntityCategoriesBlack holesGeneral relativityQuantum gravity