93 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Srinakharinwirot UniversityTH9 papers
- National Research and Innovation AgencyID4 papers
- Indonesian Institute of SciencesID3 papers
- Babeș-Bolyai UniversityRO2 papers
- Bandung Institute of TechnologyID2 papers
- Bucharest University of Economic StudiesRO2 papers
- HUN-REN Wigner Research Centre for PhysicsHU2 papers
- National Tsing Hua UniversityTW2 papers
- University of LeicesterGB2 papers
- University of SaskatchewanCA2 papers
- University of TwenteNL2 papers
- Chulalongkorn UniversityTH1 paper
20 papers · 1 filter
Shadows for Kerr-Sen-Taub-NUT black holes with Manko-Ruiz parameter
Haryanto M. Siahaan
In this paper, we explore the Kerr-Sen-Taub-NUT spacetime with the inclusion of the Manko-Ruiz parameter. We demonstrate the separability of the Hamilton-Jacobi equation for a clas…
Spontaneous pair production near magnetized Reissner-Nordstrom black holes
Haryanto M. Siahaan
We investigate the pair production near a (near) extremal magnetized Reissner-Nordstrom black hole. The pair production is shown to exist in the extremal state, which can be interp…
Hidden conformal symmetry and pair production near the cosmological horizon in Kerr-Newman-Taub-NUT-de Sitter spacetime
Haryanto M. Siahaan
We show that the study of hidden conformal symmetry that associates to the Kerr/CFT correspondence can also apply to the cosmological horizon in Kerr-Newman-Taub-NUT-de Sitter spac…
Charged Taub-NUT-de Sitter spacetime in DGP braneworld and its thermodynamics
Haryanto M. Siahaan
We study a charged Taub-NUT spacetime solution in the DGP brane. We show that the Reissner-Nordstrom-Taub-NUT-de Sitter solution of Einstein-Maxwell gravity solves the correspondin…
Destroying Kaluza-Klein and Kerr-Newman black holes
Haryanto M. Siahaan, Paulus C. Tjiang
We investigate the destroying of charged and rotating black holes in Einstein-Maxwell-(dilaton) theory. We show that a test particle with some appropriate properties in the black h…
Magnetized Kerr-Newman-Taub-NUT spacetimes
Masoud Ghezelbash, Haryanto M. Siahaan
We find a new class of exact solutions in the Einstein-Maxwell theory by employing the Ernst magnetization process to the Kerr-Newman-Taub-NUT spacetimes. We study the solutions an…
Magnetized Kerr-Taub-NUT spacetime and Kerr/CFT correspondence
Haryanto M. Siahaan
We present a new solution in Einstein-Maxwell theory which can be considered as the magnetized version of Kerr-Taub-NUT solution. Some properties of the spacetime are discussed. We…
Magnetized Reissner-Nordstrom-Taub-NUT spacetime and microscopic entropy
Haryanto M. Siahaan
We present a novel solution describing magnetized spacetime outside a massive object with electric charge equipped with NUT parameter. To get the solution, we employ the Ernst magn…
Magnetized Taub-NUT spacetime
Haryanto M. Siahaan
We find an exact solution describing the spacetime outside a massive object with NUT parameter embedded in an external magnetic field. To get the solution, we employ the Ernst magn…
Rotating and charged Taub-NUT-(A)dS spacetimes on a 3-brane
Haryanto M. Siahaan
We construct novel solutions to the effective Einstein equation with four dimensional cosmological constant on a 3-brane in Randall-Sundrum II scenario. The charged solution is obt…
Pair production of scalars around near-extremal Kerr-Sen black holes
Haryanto M. Siahaan
We investigate the charged scalar pair production near the horizon of a near-extremal Kerr-Sen black holes. The condition for pair production to occur has relation to the violation…
Merger estimates for Kerr-Sen black holes
Haryanto M. Siahaan
The advent of gravitational wave observation starts a new era of precision tests of gravitational theory. Estimations of black holes mergers should come from any well established g…
Kerr-Sen-Taub-NUT spacetime and circular geodesics
Haryanto M. Siahaan
We present a novel solution obeying classical equation of motion in the low energy limit of heterotic string theory. The solution represents a rotating mass with electric charge an…
Hidden conformal symmetry for the accelerating Kerr black holes
Haryanto M. Siahaan
According to Kerr/CFT correspondence, some aspects of extremal and non-extremal Kerr black holes could be explained by using a 2D CFT. This paper is devoted to show how Kerr/CFT co…
Gravitoelectromagnetism in Teleparallel Equivalent of General Relativity: A New Alternative
Kian Ming, Triyanta, J. S. Kosasih
Spaniol and Andrade introduced grvitoelectromagnetism in TEGR by considering superpotentials, times the determinant of tetrads, as the gravitoelectromagnetic fields. However, since…
Analytical Study of a Kerr-Sen Black Hole and a Charged Massive Scalar Field
Canisius Bernard
It is reported that Kerr-Newman and Kerr-Sen black holes are unstable to perturbations of charged massive scalar field. In this paper, we study analytically the complex frequencies…
Destroying extremal magnetized black holes
Haryanto M. Siahaan
The gedanken experiment by Wald to destroy a black hole using a test particle in the equatorial plane is adopted to the case of extremal magnetized black holes. We find the presenc…
Stationary Charged Scalar Clouds around Black Holes in String Theory
Canisius Bernard
It was reported that Kerr-Newman black holes can support linear charged scalar fields in their exterior regions. These stationary massive charged scalar fields can form bound state…
Destroying Kerr-Sen black holes
Haryanto M. Siahaan
By neglecting the self-force, self-energy, and radiative effects, it has been shown that an extremal or near-extremal Kerr-Newman black hole can turn into a naked singularity when…
Higher Spins Tunneling from a Time Dependent and Spherically Symmetric Black Hole
Haryanto M. Siahaan
The discussions of Hawking radiation via tunneling method have been performed extensively in the case of scalar particles. Moreover, there are also several works in discussing the…