3D renderings illustrate the logarithmic mass density (in cgs) of post-merger accretion disks. The length scale can be measured with respect to the size of the BH in the center. (a) The early formation stages of the disk (∼10 ms) feature high-density spiral arms resulting from the disrupted NS. (b) As the matter axisymmetrized, the compact accretion disk becomes homogeneous. The full movie showcasing the evolution of the post-merger accretion disk is available at http://www.oregottlieb.com/disk_gw.html or on Zenodo (doi:10.5281/zenodo.13139529). (c–f) Edge-on (red) and face-on (blue) spectra for model B, with different rows depicting the spectra at various times. The dotted black lines represent the CE sensitivity curve.