Recent content by Sumarna

I am unable to find any paper or book on Kerr-Bolt solution. I need to know its derivation. Please if anyone can suggest some material on it? I will be very thankful.

I have made graph of event horizon of Kerr black hole by giving simple command of polar plot. The problem is that the point where the event horizon and static limit meets should be along y-axis but instead its on x-axis. I have tried everything but not getting it right. What mistake I am...

O yes now i get it

Consider ##A=8\pi M(M+\sqrt{M^2-a^2})## which is area of rotating black hole. So if both mass M and angular momentum a are decreasing then area will increase? when i am decreasing these two terms, area is also decreasing.

This has confused me more.. if both mass and angular momentum are decreasing then area must also decrease. How it end up increasing?

Hawking area theorem says that area of black hole generally never decrease. Penrose process says that energy can be extracted from black hole. Energy extraction will decrease mass? if yes then if mass is decreased then will area also decrease? I am confusing things here :(

thank u a lot. i think i have understood it now :)

So mass of the field is not the source of a potential well?

How a potential well is formed? Can mass of a wave creates a potential well?