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pro vyhledávání: '"Siahaan, P."'
Autor:
Siahaan, Haryanto M.
We construct a novel solution in the low energy limit of heterotic string theory describing accelerating charged and rotating black holes with NUT parameter. Some aspects of the new spacetime are discussed, such as locations of horizons, ergoregions,
Externí odkaz:
http://arxiv.org/abs/2409.14046
Autor:
Siahaan, Haryanto M.
Theories of non-linear electrodynamics inherently describe deviations from Maxwell theory in the strong field regime. Among these, ModMax electrodynamics stands out as a unique one-parameter generalization of Maxwell theory that preserves both confor
Externí odkaz:
http://arxiv.org/abs/2409.13967
Autor:
Siahaan, Haryanto M.
In this study, we investigate the behavior of ModMax-de Sitter black holes when perturbed by massless neutral scalar fields. Specifically, we analyze how the relaxation time, defined as the inverse of the fundamental imaginary frequency, varies with
Externí odkaz:
http://arxiv.org/abs/2409.03359
Autor:
Siahaan, Haryanto M.
We construct a new solution in the Einstein-Maxwell-dilaton theory describing accelerating, charged, and rotating black hole, i.e. the accelerating Kaluza-Klein black hole. Some properties the spacetime are discussed, such as the electromagnetic fiel
Externí odkaz:
http://arxiv.org/abs/2409.02892
Akademický článek
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Publikováno v:
Problems and Perspectives in Management, Vol 22, Iss 4, Pp 523-531 (2024)
In the digitalization era, banks strive to implement digital transformations; digital culture, competence, and leadership become essential factors to advance the company’s digitalization. Digital transformation is indispensable in improving employe
Externí odkaz:
https://doaj.org/article/16b1753c985e48ab8205ab76e306a2d5
Autor:
Andre Marolop Pangihutan Siahaan, Alvin Ivander, Rr. Suzy Indharty, Steven Tandean, Anastasia Grace Milenia Ginting, Masrini Ginting, Felix Khosasi, Elbert
Publikováno v:
Clinical and Experimental Pediatrics, Vol 67, Iss 11, Pp 569-579 (2024)
Concussion is a global public health problem that affects many children worldwide. Most patients present with postconcussion syndrome and normal brain imaging findings. Despite the high incidence of concussion in children, published research on nonph
Externí odkaz:
https://doaj.org/article/497340c1ee4341ad92a0bbc94008b6e9
Autor:
Steven Tandean, Harsan Harsan, Andre Marolop Pangihutan Siahaan, Harley Septian, Alexander Josethang
Publikováno v:
Neurointervention, Vol 19, Iss 3, Pp 185-189 (2024)
A 24-year-old male was admitted with progressive cervical hypesthesia, tetraparesis, dyspnea, and a history of craniofacial fracture. Spinal magnetic resonance imaging (MRI) showed brainstem edema extending to the thoracic spine with multiple promine
Externí odkaz:
https://doaj.org/article/c370687cfd5e454198b5adcdc7c83270
Autor:
Haryanto M. Siahaan
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 84, Iss 10, Pp 1-10 (2024)
Abstract In this paper, we explore the application of Kerr/CFT correspondence to the accelerating Kerr–Taub–NUT spacetime. We demonstrate that the correspondence can be maintained if the near-horizon angular coordinate is appropriately rescaled.
Externí odkaz:
https://doaj.org/article/83968c947d9a495bbc3f06e9634f0d03
Autor:
Siahaan, Haryanto M.
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 interpreted as the Schwinger effect due to the strong field under considerat
Externí odkaz:
http://arxiv.org/abs/2305.01619