New form of the Kerr-Newman solution

A new form of the Kerr-Newman solution is presented. The involves a time coordinate which represents local proper for charged massive particle released from rest at spatial infinity. chosen coordinates ensure that well-behaved horizons and enable an intuitive description many physical phenomena. If charge $e = 0$, reduce to Doran Kerr with replacement $M \to M - Q^2/(2r)$, where $M$ $Q$ are mass black hole, respectively. Such valid only $r \ge Q^2/(2M)$, however, corresponds region neutral infinity can penetrate. By contrast, \neq 0$ opposite sign $Q$, have progressively extended range validity as $|e|$ increases tend advanced Eddington-Finkelstein (EF) null $|e| \infty$, hence becoming global in this limit. (i.e.\ $Q=0$) may also be written terms by setting $eQ -\alpha$, $\alpha$ real parameter unrelated charge; case system all non-negative values limits $\alpha \infty$ correspond EF coordinates, respectively, without any need transform between them.