Intrinsic Gravitational Modes Sustained by (GR) Gravitational Wave Emitters*

Black holes resulting from stellar collapse had been conjectured [1] to be imbedded in plasma structures since early systematic theory efforts were undertaken. The conjecture has been confirmed later by the observations on both galactic and (extra galactic) massive black holes. (GR) Gravitational Wave emitters that include BH binaries imbedded in plasma disks are shown to sustain the parallel emergence of Intrinsic Gravitational Modes [2] that rotate (toroidally) with the same frequency as the rotation frequency Ω_ob of the binary with which they are associated. For binaries with equal mass BH’s the mode frequencies are equal to a multiple of 2Ω_ob. The lowest frequency (2Ω_ob) modes are ballooning (standing) in the vertical direction and can be driven linearly, albeit with relatively low amplitudes, by the force associated with the time-dependent component of the gravitational potential. The higher frequency modes can be represented as a combination of ballooning structures and a helical (vertically) propagating wave with a frequency close to the ion-sound frequency, referring to plasmas with electron temperatures considerably higher than those of the nuclei.