ИСТИНА

A survey of the recent results of the author in the unsteady high-Q resonant scattering of ultrashort pulses by a particle, whose size is comparable or smaller than the wavelength of the incident radiation at the carrier frequency is presented. It is shown that the unsteadiness of the scattering process may result in qualitative changes in the manifestation of the phenomenon both in the near-field and in far-field wave zones. Most attention is paid to the dynamics of the nonradiating anapole modes and dynamic Fano resonances, which are discussed in detail. Simple, analytically tractable models are proposed to describe the transient processes. Their comparison with the results of the direct numerical integration of the complete set of the Maxwell equations shows that the models exhibit high accuracy in the quantitative description of the phenomenon.