TEMPERATURE OF PERFECT FLUIDBLACK HOLES IN VARIOUSCOORDINATES AND ENTROPYCOMPOSITION OF BLACK HOLE SYSTEMS
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Abstract
The laws of thermodynamics describe the temperature and the en-
tropy of perfect fluid black holes. The temperature can be calculated
from the thermal radiation or Hawking radiation using surface gravity,
while the entropy is related to the determined temperature. In this pa-
per, we explain in detail the temperature and the entropy of black holes.
Finally, we calculate the entropy composition of the perfect fluid black
hole systems that have three black holes in the same coordinates. We are
interested in two of these coordinates, the Schwarzschild coordinates and
the isotropic coordinates, and will also analyze the two types of entropy
compositions
tropy of perfect fluid black holes. The temperature can be calculated
from the thermal radiation or Hawking radiation using surface gravity,
while the entropy is related to the determined temperature. In this pa-
per, we explain in detail the temperature and the entropy of black holes.
Finally, we calculate the entropy composition of the perfect fluid black
hole systems that have three black holes in the same coordinates. We are
interested in two of these coordinates, the Schwarzschild coordinates and
the isotropic coordinates, and will also analyze the two types of entropy
compositions
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