16 citations · 27 across the 2 of their papers we have counts for
9 papers · 1 filter
A Critical Assessment of Black Hole Solutions With a Linear Term in Their Redshift Function
Daniele Gregoris, Yen Chin Ong, Bin Wang
Different theories of gravity can admit the same black hole solution, but the parameters usually have different physical interpretations. In this work we study in depth the linear…
Cosmological evolution with quadratic gravity and nonideal fluids
Saikat Chakraborty, Daniele Gregoris
Some cosmological models based on the gravitational theory , and on fluids obeying to the equations of state of Redlich-Kwong, Berthelot, and Dieterici are proposed…
Observational backreaction in discrete black holes lattice cosmological models
Daniele Gregoris, Kjell Rosquist
Applying the Sachs formalism, the optical properties encoded in the distance modulus are studied along curves exhibiting local rotational symmetry for some closed inhomogeneous cos…
Thermodynamics of Shearing Massless Scalar Field Spacetimes is Inconsistent With the Weyl Curvature Hypothesis
Daniele Gregoris, Yen Chin Ong, Bin Wang
Our Universe has an arrow of time. In accordance with the second law of thermodynamics, entropy has been increasing ever since the Big Bang. The fact that matter is in thermal equi…
Black holes and naked singularities from Anton-Schmidt's fluids
Salvatore Capozziello, Rocco D'Agostino, Daniele Gregoris
Adopting the Tolman-Oppenheimer-Volkoff formalism, we propose a new analytical solution for a static and spherically symmetric black hole where the cosmological constant is general…
The Horizon of the McVittie Black Hole: On the Role of the Cosmic Fluid Modeling
Daniele Gregoris, Yen Chin Ong, Bin Wang
In this paper, we investigate the existence and time evolution of the cosmological and event horizons in a McVittie universe whose expansion is driven by the Redlich-Kwong, (Modifi…