On the Dynamic Effect of Infinite Redshift Surface: Lorentz Factor Analysis Method

he generation of infinite redshift surface is due to the singularity of Lorentz transformation, according to this fact, the dynamic effect of the infinite redshift surface can be analyzed by the singularity of the parameters in the Lorentz transform factor. In this paper, the Lorentz factor analysis method is proposed, and the corresponding interpretation is given in combination with the background of mathematics and physics. And this method is applied to the analysis of Reissner-Nordstrom and Kerr-Newman black hole spacetime, Find that the observation of infinite redshift surface will expand and contract with the observer's radial motion, and the corresponding formula is given quantitatively. We give a new proof of the inaccessibility of the time-like singularity of a charged black hole and prove that the property is only related to the electrification and has nothing to do with the rotation. It is shown that the observation result of the space-like quasi-circular motion observer is consistent with that of the static observer at infinity. The concept of minimum blueshift radius is proposed in the study of the observer who escapes at the speed of light in normal spacetime, its existence makes a stronger constraint on black hole parameters than traditional condition, this is probably the reason why it is difficult to form an intermediate-mass black hole, at the end of the paper, some discussions are made.