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Realistic models of Globular Clusters with white dwarfs, neutron stars and black holes using GPU supercomputer

Published online by Cambridge University Press:  09 October 2020

Bhusan Kayastha Open the ORCID record for Bhusan Kayastha [Opens in a new window] ,
Long Wang ,
Peter Berczik ,
Xiaoying Pang ,
Manuel Arca Sedda ,
Albrecht Kamlah  and
Rainer Spurzem
Bhusan Kayastha
Affiliation:
University of Chinese Academy of Sciences, 19A Yuquanlu, Shijingshan District, Beijing100049, China email: kayastha@nao.cas.cn National Astronomical Observatories & Key Laboratory of Computational Astrophysics, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing100101, China Astronomisches Rechen-Institut, Zentrum für Astronomie, University of Heidelberg, Mönchhofstrasse 12-14, 69120 Heidelberg, Germany
Long Wang
Affiliation:
Department of Astronomy, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan RIKEN Advanced Institute for Computational Science, 7-1-26 Minatojima-minami-machi, Chuo-ku, Kobe, Hyogo650-0047, Japan
Peter Berczik
Affiliation:
National Astronomical Observatories & Key Laboratory of Computational Astrophysics, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing100101, China Astronomisches Rechen-Institut, Zentrum für Astronomie, University of Heidelberg, Mönchhofstrasse 12-14, 69120 Heidelberg, Germany Main Astronomical Observatory, National Academy of Sciences, Kyiv, Ukraine
Xiaoying Pang
Affiliation:
Department of Mathematical Sciences, Xi’an Jiaotong-Liverpool University, No.111 Ren’ai Road, Dushu Lake Higher Education Town, Suzhou Industrial Park, Suzhou215123, China
Manuel Arca Sedda
Affiliation:
Astronomisches Rechen-Institut, Zentrum für Astronomie, University of Heidelberg, Mönchhofstrasse 12-14, 69120 Heidelberg, Germany
Albrecht Kamlah
Affiliation:
Institut für Astrophysik, Georg-August-Universität Göttingen, Friedrich-Hund-Platz 1, 37077, Göttingen, Germany
Rainer Spurzem
Affiliation:
National Astronomical Observatories & Key Laboratory of Computational Astrophysics, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing100101, China Astronomisches Rechen-Institut, Zentrum für Astronomie, University of Heidelberg, Mönchhofstrasse 12-14, 69120 Heidelberg, Germany Kavli Institute for Astronomy & Astrophysics, Peking University, Yiheyuan Lu 5, Haidian District, Beijing100871, China
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Abstract

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We present some results from the DRAGON simulations, a set of four direct N-body simulations of globular clusters (GCs) with a million stars and five percent initial (primordial) binaries. These simulations were undertaken with the NBODY6++GPU code, which allowed us to follow dynamical and stellar evolution of individual stars and binaries, formation and evolution of white dwarfs, neutron stars, and black holes, and the effect of a galactic tidal field. The simulations are the largest existing models of a realistic globular cluster over its full lifetime of 12 billion years. In particular we will show here an investigation of the population of binaries including compact objects (such as white dwarfs - cataclysmic variables and merging black hole binaries in the model as counterparts of LIGO/Virgo sources); their distribution in the cluster and evolution with time.

Keywords

globular clusterskinematics and dynamics - starsblack holesgravitational waves
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 15 , Symposium S357: White Dwarfs as Probes of Fundamental Physics: Tracers of Planetary, Stellar and Galactic Evolution , October 2019 , pp. 206 - 210
Copyright
© International Astronomical Union 2020

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