Search Results - "Berczik, P."

Preparing the next gravitational million-body simulations: evolution of single and binary stars in nbody6++gpu , mocca , and mcluster by Kamlah, A W H, Leveque, A, Spurzem, R, Arca Sedda, M, Askar, A, Banerjee, S, Berczik, P, Giersz, M, Hurley, J, Belloni, D, Kühmichel, L, Wang, L

“…ABSTRACT We present the implementation of updated stellar evolution recipes in the codes nbody6++gpu, mocca, and mcluster. We test them through numerical…”
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The impact of stellar evolution on rotating star clusters: the gravothermal-gravogyro catastrophe and the formation of a bar of black holes by Kamlah, A W H, Spurzem, R, Berczik, P, Sedda, M Arca, Dotti, F Flammini, Neumayer, N, Pang, X, Shu, Q, Tanikawa, A, Giersz, M

“…ABSTRACT We present results from a suite of eight direct N-body simulations, performed with nbody6++ GPU, representing realistic models of rotating star…”
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The star cluster survivability after gas expulsion is independent of the impact of the Galactic tidal field by Shukirgaliyev, B, Parmentier, G, Berczik, P, Just, A

“…ABSTRACT We study the impact of the tidal field on the survivability of star clusters following instantaneous gas expulsion. Our model clusters are formed with…”
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On the bar formation mechanism in galaxies with cuspy bulges by Polyachenko, E. V., Berczik, P., Just, A.

“…We show by numerical simulations that a purely stellar dynamical model composed of an exponential disc, a cuspy bulge, and a Navarro–Frenk–White halo with…”
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NGC 6240 supermassive black hole binary dynamical evolution based on Chandra data by Sobolenko, M, Kompaniiets, O, Berczik, P, Marchenko, V, Vasylenko, A, Fedorova, E, Shukirgaliyev, B

“…ABSTRACT The main idea of our research is to estimate the physical coalescence time of the double supermassive black hole (SMBH) system in the centre of…”
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Simulation of the loss-cone instability in spherical systems – II. Dominating Keplerian potential by Polyachenko, E V, Berczik, P, Just, A, Shukhman, I G

“…ABSTRACT According to our previous theoretical findings, physical processes in centres of galaxies, star clusters, and the Oort comet cloud can be…”
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Statistical Analysis of the Probability of Interaction of Globular Clusters with Each Other and with the Galactic Center on the Cosmological Time Scale According to Gaia DR2 Data by Ishchenko, M., Sobolenko, M., Berczik, P., Panamarev, T.

“…This study is aimed at investigating the dynamic evolution of the orbits of stellar globular clusters (SGCs). To integrate the orbits backward in time, the…”
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Simulation of the loss-cone instability in spherical systems – I. Dominating harmonic potential by Polyachenko, E V, Berczik, P, Just, A, Shukhman, I G

“…ABSTRACT A new so-called ‘gravitational loss-cone instability’ in stellar systems has recently been investigated theoretically in the framework of linear…”
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Dynamical friction of massive objects in galactic centres by Just, A., Khan, F. M., Berczik, P., Ernst, A., Spurzem, R.

“…Dynamical friction leads to an orbital decay of massive objects like young compact star clusters or massive black holes in central regions of galaxies. The…”
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Dynamical model of an obscuring clumpy torus in AGNs – I. Velocity and velocity dispersion maps for interpretation of ALMA observations by Bannikova, E Yu, Sergeyev, A V, Akerman, N A, Berczik, P P, Ishchenko, M V, Capaccioli, M, Akhmetov, V S

“…ABSTRACT We have developed the dynamical model of a clumpy torus in an active galactic nucleus (AGN) and compared to recent The Atacama Large Millimeter Array…”
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Roche volume filling and the dissolution of open star clusters by Ernst, A., Berczik, P., Just, A., Noel, T.

“…From direct N‐body simulations we find that the dynamical evolution of star clusters is strongly influenced by the Roche volume filling factor. We present a…”
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Quantitative analysis of clumps in the tidal tails of star clusters by Just, A., Berczik, P., Petrov, M. I., Ernst, A.

“…Tidal tails of star clusters are not homogeneous but show well-defined clumps in observations as well as in numerical simulations. Recently, an epicyclic…”
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Evolution of growing black holes in axisymmetric galaxy cores by Fiestas, J., Porth, O., Berczik, P., Spurzem, R.

“…N-body realizations of axisymmetric collisional galaxy cores (e.g. M32, M33, NGC 205, Milky Way) with embedded growing black holes are presented. Stars which…”
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Performance analysis of direct N-body algorithms on special-purpose supercomputers by Harfst, Stefan, Gualandris, Alessia, Merritt, David, Spurzem, Rainer, Zwart, Simon Portegies, Berczik, Peter

“…Direct-summation N-body algorithms compute the gravitational interaction between stars in an exact way and have a computational complexity of O ( N 2 ) …”
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Bar Formation in Milky Way type Galaxies by Polyachenko, E. V., Berczik, P., Just, A.

“…Many barred galaxies, possibly including the Milky Way, have cusps in their centers. There is a widespread belief, however, that the usual bar instability,…”
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Apparent counter-rotation in the torus of NGC 1068: influence of an asymmetric wind by Bannikova, Elena Yu, Akerman, Nina O, Capaccioli, Massimo, Berczik, Peter P, Akhmetov, Vladimir S, Ishchenko, Marina V

“…ABSTRACT The recent ALMA maps together with observations of H2O maser emission seem to suggest the presence of a counter-rotation in the obscuring torus of NGC…”
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Kinematic characteristics of the Milky Way globular clusters based on Gaia DR2 data by Chemerynska, I. V, Ishchenko, M. V, Sobolenko, M. O, Khoperskov, S. A, Berczik, P. P

“…Advances in Astronomy and Space Physics, 12, 18-24 (2022) Using the data from Gaia (ESA) Data Release 2 we performed the orbital calculations of globular…”
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Galaxy rotation and supermassive black hole binary evolution by Mirza, M. A., Tahir, A., Khan, F. M., Holley-Bockelmann, H., Baig, A. M., Berczik, P., Chishtie, F.

“…Abstract Supermassive black hole (SMBH) binaries residing at the core of merging galaxies are recently found to be strongly affected by the rotation of their…”
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Dynamical model of an obscuring clumpy torus in AGNs: I. Velocity and velocity dispersion maps for interpretation of ALMA observations by Bannikova, E. Yu, Sergeyev, A. V, Akerman, N. A, Berczik, P. P, Ishchenko, M. V, Capaccioli, M, Akhmetov, V. S

“…We have developed the dynamical model of a clumpy torus in an active galactic nucleus (AGN) and compared to recent ALMA observations. We present $N$-body…”
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THE INFLUENCE OF OBSERVATIONAL ERRORS IN GAIA DR3 ON THE RECONSTRUCTION OF GLOBULAR CLUSTER ORBITS ON A COSMOLOGICAL TIMESCALE by Kuvatova, D., Ishchenko, M., Berczik, P., Omarov, C., Kalambay, M.

“…In recent years, the emerging field of astronomy focused on the history of galaxy formation, known as Galactic Archaeology, has been gaining popularity…”
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