عنوان مجله
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GENERAL RELATIVITY AND GRAVITATION
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چکیده
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We obtain the exact solution of the field equations in the framework of the Rastall
gravity for a static, charged and spherically symmetric black hole surrounded by a
fluid of strings and analyze the behavior of the horizons, mass, Hawking temperature
and geodesics in terms of the parameter related to the presence of the fluid as well as
on the parameter β of the Rastall gravity. We discuss some particular cases and the
fact that a subclass of the obtained solutions can be mapped to black hole solutions
obtained in the framework of general relativity. We also obtain a class of solutions
which correspond to a rotating, charged black hole surrounded by a fluid of strings,
by applying an algorithm to construct rotating solutions from the static solutions. The
horizons, mass, Hawking temperature, ergoregions and geodesics are examined. The
role played by the presence of the fluid of strings and the characteristics arising from
the Rastall gravity are emphasized
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