Zobrazeno 1 - 10
of 421
pro vyhledávání: '"RÁCZ, István"'
Autor:
Galbally, Javier, Cepilovs, Aleksandrs, Blanco-Gonzalo, Ramon, Ormiston, Gillian, Miguel-Hurtado, Oscar, Racz, Istvan Sz.
Even though a few initial works have shown on small sets of data some level of bias in the performance of fingerprint recognition technology with respect to certain demographic groups, there is still not sufficient evidence to understand the impact t
Externí odkaz:
http://arxiv.org/abs/2409.19992
Autor:
Bengtsson, Ingemar, Racz, Istvan
It is possible to solve the Einstein constraint equations as an evolutionary rather than an elliptic system. Here we consider the Gauss constraint in electrodynamics as a toy model for this, and produce an initial data set for an electromagnetic puls
Externí odkaz:
http://arxiv.org/abs/2407.11880
Autor:
Racz, Istvan, Toth, Gabor Zsolt
Publikováno v:
Gen. Relativ. Gravit. 56 (2024) 131
The late-time behaviour of the solutions of the Fackerell-Ipser equation (which is a wave equation for the spin-zero component of the electromagnetic field strength tensor) on the closure of the domain of outer communication of sub-extremal Kerr spac
Externí odkaz:
http://arxiv.org/abs/2404.13447
Autor:
Rácz, István
A method is introduced which, for the first time, allows us to construct axial vector fields without which formal definitions of quasi-local angular momentum, in general, would remain empty. The introduced method is practical, it can be used to const
Externí odkaz:
http://arxiv.org/abs/2401.14251
Autor:
Horvath, Istvan, Bagoly, Zsolt, Balazs, Lajos G., Hakkila, Jon, Horvath, Zsuzsa, Joo, Andras Peter, Pinter, Sandor, Tóth, L. Viktor, Veres, Peter, Racz, Istvan I.
We explore large-scale cosmic structure using the spatial distribution of 542 gamma-ray bursts (GRBs) having accurately measured positions and spectroscopic redshifts. Prominent cosmological clusters are identified in both the northern and southern g
Externí odkaz:
http://arxiv.org/abs/2312.10050
Autor:
Pinter, Sandor, Balazs, Lajos G., Bagoly, Zsolt, Toth, L. Viktor, Racz, Istvan I., Horvath, Istvan
We made statistical analysis of the Fermi GBM and Swift BAT observational material, accumulated over 15 years. We studied how GRB parameters (T$_{90}$ duration, fluence, peak flux) that were observed by only one satellite differ from those observed b
Externí odkaz:
http://arxiv.org/abs/2311.13955
Autor:
Csukás, Károly, Rácz, István
Publikováno v:
Phys. Rev. D 107, 084013 (2023)
Near-Kerr black hole initial datasets are constructed by applying either the parabolic-hyperbolic or the algebraic-hyperbolic form of the constraints. In both cases, strongly and weakly asymptotically flat initial datasets with desirable falloff rate
Externí odkaz:
http://arxiv.org/abs/2302.00590
Autor:
Rácz, István
Publikováno v:
Gen Relativ Gravit 55, 3 (2023)
The singularity theorems of Penrose, Hawking, and Geroch predict the existence of incomplete inextendible causal geodesics in a wide range of physically adequate spacetimes modeling the gravitational collapse of stars and the expanding universe. Here
Externí odkaz:
http://arxiv.org/abs/2301.00572
Autor:
Csukás, Károly Zoltán, Rácz, István
Publikováno v:
Phys. Rev. D 103, 084035 (2021)
Superradiant scattering of linear spin $s=0,\pm 1,\pm 2$ fields on Kerr black hole background is investigated in the time domain by integrating numerically the homogeneous Teukolsky master equation. The applied numerical setup has already been used i
Externí odkaz:
http://arxiv.org/abs/2101.05530