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- Research Institute for Astronomy and Astrophysics of MaraghIR77 papers
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6 papers · 1 filter
MOND Theory and Thermodynamics of Spacetime
Ahamd Sheykhi, Leila Liravi
Starting from the Modified Newtonian Dynamics (MOND) theory and using an inverse approach, we construct a general form of the entropy expression associated with the horizon based o…
New explanation for accelerated expansion and flat galactic rotation curves
Ahmad Sheykhi
Employing the non-additive Tsallis entropy, , for the large-scale gravitational systems, we disclose that in the cosmological scales both Friedmann equation and the equa…
Metamaterials mimic the black holes: the effects of charge and rotation on the optical properties
S. H. Hendi, Z. S. Taghadomi, A. Ghasempour Ardakani
Motivated by investigation of black hole properties in the lab, some interesting subjects such as analogue gravity and transformation optics are generated. In this paper, we look f…
Wormhole solutions in the presence of nonlinear Maxwell field
S. H. Hendi
Generalizing of the Maxwell field to nonlinear electrodynamics theories, we look for the magnetic solutions. In initial approximation these models give the usual linear electrodyna…
Initiating the effective unification of black hole horizon area and entropy quantization with quasi-normal modes
C. Corda, S. H. Hendi, R. Katebi +1
Black hole (BH) quantization may be the key to unlocking a unifying theory of quantum gravity (QG). Surmounting evidence in the field of BH research continues to support a horizon…
Rotating black strings in -Maxwell theory
S. Salarpour, A. Sheykhi, Y. Bahrampour
In general, the field equations of theory coupled to a matter field are very complicated and hence it is not easy to find exact analytical solutions. However, if one conside…