https://doi.org/10.1140/epjc/s10052-023-11962-5
Regular Article - Theoretical Physics
Reduced Kiselev black hole
1
Department of Physics, East China Normal University, 200241, Shanghai, People’s Republic of China
2
Division of Mathematical and Theoretical Physics, Shanghai Normal University, 200234, Shanghai, People’s Republic of China
Received:
19
July
2023
Accepted:
25
August
2023
Published online:
5
September
2023
The Kiselev model describes a black hole surrounded by a fluid with equations of state 
and 
respectively in radial and tangential directions. It has been extensively studied in the parameter region 
. If one rids off the black hole and turns to the region 
, i.e. 
, then a new horizon of black hole type will emerge. This case has been mentioned in Kiselev’s pioneer work but seldom investigated in the literature. Referring to it as reduced Kiselev black hole, we revisit this case with attention to its causal structure, thermodynamics, shadow cast and weak-field limit. An alternative interpretation and extensions of the black hole are also discussed.
© The Author(s) 2023
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