Author(s)

Dipo Mahto¹, Anuradha Kumari²

¹Department of Physics, Marwari College, T. M. B. University, Bhagalpur, India.
²Department of Physics, T. M. B. University, Bhagalpur, India.

Mahto et al. have shown δS≥0 and M²=a*J by using the first law of the black hole mechanics in the vacuum and Einstein mass-energy equivalence relation specially for spinning black holes. In the present paper, this work is extended to propose a model for the change in mass of the spinning black holes due to corresponding change in the angular momentum for maximum & half spin parameter of black holes (a* = 1 & 1/2) and calculated their values for different test black holes in XRBs and AGN. We have also shown that the change in mass of the spinning black holes due to corresponding change in the angular momentum for maximum spinning rate of black holes (a* = 1) is double to that of the spinning black holes having spinning parameter (a* = 1/2).

Spinning Black Holes, Angular Momentum, Spinning Parameter

Mahto, D. and Kumari, A. (2018) Change in Mass of Spinning Black Holes w.r.t. the Angular Momentum. Journal of Modern Physics, 9, 1037-1042. doi: 10.4236/jmp.2018.95065.