MG15 - Talk detail |
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Participant |
Nandan, Hemwati | |||||||
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Institution |
Department of Physics, Gurukula Kangri Vishwavidyalaya - Gurukula Kangri - Haridwar - Uttarakhnad - India | |||||||
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Session |
BH2 |
Accepted |
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Order |
Time |
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Talk |
Oral abstract |
Title |
GEODESICS IN A ROTATING BLACK HOLE SPACETIME SURROUNDED BY QUINTESSENCE | |||||
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Abstract |
The quintessence is one of the several candidates which represents the dark energy responsible for the acceleration of the universe. The quintessence is described by a canonical scalar field minimally coupled to gravity. We study the timelike geodesic congruences in the background of a rotating black hole spacetime surrounded by quintessence in the equatorial plane. The effect of equation of state (EOS) parameter for quintessence and the normalization factor on geodesics is investigated in detail in view of the structure of possible orbits, including the innermost stable circular orbits (ISCOs). The structure of photon orbits is also studied for the different values of parameters involved in. The results obtained are then compared with those of the Kerr and Schwarzschild black hole spacetimes in general relativity with or without quintessence. |
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