Change in Internal Energy and Enthalpy of Spinning Black Hole with Half Spin Parameter in XRBs

Dipo Mahto,Niharika Kumari,Amresh Kumar Singh

doi:10.4236/ijaa.2016.63027

Abstract

Mahto et al. gave an expression for the change in enthalpy and internal energy with corresponding change in the radius of the event horizon of black holes of spin parameter a* = 1 (2013). On the basis of this research work, we have proposed an expression for the change in the internal energy and enthalpy of the spinning black holes to assume spin parameter a* = 1/2 and calculated their values for different test spinning black holes existing in XRBs.

Highlights

The black holes are perfect absorbers and do not emit anything; their temperature is absolute zero
We have proposed an expression for the change in the internal energy and enthalpy of the spinning black holes to assume spin parameter a* = 1/2 on the basis of research work [6]
From the observation of the data in the table, it is clear that the change in enthalpy as well as internal energy of different test spinning black holes increases with increase in corresponding change in values of the mass/radius of the event horizon in XRBs

Summary

Introduction

The black holes are perfect absorbers and do not emit anything; their temperature is absolute zero. In quantum theory black holes emit Hawking radiation with a perfect thermal spectrum. Kumari et al have derived the formula for the energy of non-spinning black holes (EBH) in terms of the radius of the event horizon [2]. Mahto et al have derived the formula for the change in energy of non-spinning black holes (BHs) due to corresponding change in radius of the event horizon [4]. Mahto et al proposed a model for the change in enthalpy and internal energy with corresponding change in the radius of the event horizon of black holes with spin parameter a* = 1 [6]. We have proposed an expression for the change in the internal energy and enthalpy of the spinning black holes to assume spin parameter a* = 1/2 on the basis of research work [6]

Discussion

Data in the Support for Mass of Black Holes

Result and Discussion

Conclusion