Zobrazeno 1 - 10
of 543
pro vyhledávání: '"Dadhich, Naresh"'
Publikováno v:
Eur. Phys. J. C (2024) 84:1015
Buchdahl star is the most compact object without an event horizon and is an excellent candidate for a black hole mimicker. Unlike black holes, rotating Buchdahl star can be over-extremal with respect to the black hole, sustaining a larger spin. We sh
Externí odkaz:
http://arxiv.org/abs/2404.06870
Autor:
Dadhich, Naresh, Nayak, K Rajesh
Publikováno v:
Resonance, Vol 29, P 11(2024)
With his seminal and pioneering work on the stability of the Schwarzschild black hole and its interaction with gravitational radiation, Vishu had opened a new window on black hole astrophysics. One of the interesting results that soon followed was th
Externí odkaz:
http://arxiv.org/abs/2402.11503
We study the process of gravitational collapse in pure Gauss-Bonnet gravity. In the homogeneous dust collapse, we show that the $D=7$ pure Gauss-Bonnet theory has gravitational dynamics indistinguishable from Einstein's theory in $D=4$, meaning that
Externí odkaz:
http://arxiv.org/abs/2306.10872
In this paper, we geometrically establish yet another correspondence between Newtonian mechanics and general relativity by connecting the Buchdahl bound and the Virial theorem. Buchdahl stars are defined by the saturation of the Buchdahl bound, $\Phi
Externí odkaz:
http://arxiv.org/abs/2304.10197
Autor:
Dadhich, Naresh
The Buchdahl star is the limiting compactness (which is indicated by sturation of the Buchdahl bound) object without horizon. It is in general defined by the potential felt by radially falling timelike particle, $\Phi(R) = 4/9$, in the field of a sta
Externí odkaz:
http://arxiv.org/abs/2212.06745
Autor:
Singha, Chiranjeeb, Dadhich, Naresh
The strong cosmic censorship conjecture states (SCCC) that one cannot extend spacetime beyond the Cauchy horizon with a square-integrable connection. This conjecture was postulated to save the deterministic nature of the most successful theory of gra
Externí odkaz:
http://arxiv.org/abs/2209.10153
Autor:
Shaymatov, Sanjar, Dadhich, Naresh
It was shown long back in \cite{Dadhich97} that a non-extremal black hole cannot be converted into an extremal one by test particle adiabatic accretion. The Buchdahl star is the most compact object without horizon and is defined by $\Phi(R) = 4/9$, w
Externí odkaz:
http://arxiv.org/abs/2209.02560
Publikováno v:
Physical Review D 105, 124068 (2022)
We wish to carry forward to higher dimensions the insightful and novel method of obtaining the Kerr metric proposed by one of us [Gen. Relativ. Gravit. 45, 2383 (2013)] for deriving the Myers-Perry rotating black hole metric. We begin with a flat spa
Externí odkaz:
http://arxiv.org/abs/2205.02231
Autor:
Shaymatov, Sanjar, Dadhich, Naresh
Publikováno v:
JCAP 06 (2023) 010
In this paper, we wish to investigate the weak cosmic censorship conjecture (WCCC) for the non black hole object, Buchdahl star and test its validity. It turns out that the extremal limit for the star is over-extremal for black hole, $Q^2/M^2 \leq 9/
Externí odkaz:
http://arxiv.org/abs/2205.01350
Autor:
Dadhich, Naresh
Publikováno v:
Gen. Relativ. Grav. \{bf 54}, 83 (2022)
In this essay, we wish to propose a general principle: \it{the equation of motion or dynamics of a fundamental force should not be prescribed but instead be entirely driven by geometry of the appropriate spacetime manifold, and the equation is then o
Externí odkaz:
http://arxiv.org/abs/2205.00875