2008/02/24 by Nikolai V. Mitskievich, Mitskievich, Nikolai V.
Physics and Astronomy · #Cosmology and Gravitation Theories #FOS: Physical sciences #General Relativity and Quantum Cosmology (gr-qc) #Pulsars and Gravitational Waves Research #Relativity and Gravitational Theory #gr-qc
paper · pdf · doi:10.48550/arxiv.0802.3474
28 pages, no figures
arxiv created 2008/02/24 · openalex publication_date 2008/02/24 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The simplest electromagnetic fields' (general- as well as special-relativistic) classification is formulated which is based on physically motivated ideas. According to this classification these fields can belong to three types (electric, magnetic and null), each of them being split in pure and impure subtypes. Only pure null type field propagates with the fundamental velocity c, all other fields have the propagation velocity less than that of light. The reference-frame-based methods of elimination of alternative three-fields (e.g., magnetic in the electric type case) are given for pure subtypes; for pure null type the generalized Doppler effect takes place instead. All three types of impure fields are shown to be \bf E-\bf B-parallelizable. Thus such an elimination in pure non-null and parallelization in all impure cases mean transformation to the reference frame co-moving with the electromagnetic field in which the Poynting vector vanishes. The methods we propose modernizing the Rainich--Misner--Wheeler approach, also permit to construct new exact Einstein--Maxwell solutions from already known seed solutions. As examples, the Kerr--Newman and Liénard--Wiechert solutions are considered, three ``new'' types of rotating charged black holes (with the same Kerr-Newman geometry) are presented, and new physical effects are evaluated. PACS 2008 Numbers: 04.20-\bf q, 04.20.Ex, 04.40.Nr, 04.70.Bw