Positions of resonant domains (shown in white color) in the simulated nanoparticle aggregate. These positions correspond to the ratio of the dipole moment of the particle to its volume exceeding 0.5 of the maximum magnitude of such ratio in the aggregate of 1000 Ag nanoparticles. Particle size distribution is close to a truncated Gaussian function in the radius range 4–16 nm. The radiation wavelength is 500 nm. Polarization directions are indicated by the arrows.