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

Bhusan Kayastha; Long Wang; Peter Berczik; Xiaoying Pang; Manuel Arca Sedda; Albrecht Kamlah; Rainer Spurzem

doi:10.1017/S1743921320000459

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

Bhusan Kayastha
, Long Wang
, Peter Berczik
, Xiaoying Pang
, Manuel Arca Sedda
, Albrecht Kamlah
, Rainer Spurzem

Department of Physics

University of Chinese Academy of Sciences
CAS - National Astronomical Observatories
Heidelberg University
The University of Tokyo
RIKEN
NASU - Main Astronomical Observatory
University of Göttingen
Peking University

Research output: Contribution to journal › Conference article › peer-review

Abstract

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.

Original language	English
Pages (from-to)	206-210
Number of pages	5
Journal	Proceedings of the International Astronomical Union
Volume	15
Issue number	357
DOIs	https://doi.org/10.1017/S1743921320000459
Publication status	Published - 2020
Event	357th Symposium of the International Astronomical Union on White Dwarfs as Probes of Fundamental Physics: Tracers of Planetary, Stellar and Galactic Evolution - Hilo, United States Duration: 21 Oct 2019 → 25 Oct 2019

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 3 Good Health and Well-being

Keywords

black holes
globular clusters
gravitational waves
kinematics and dynamics - stars

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10.1017/S1743921320000459

Cite this

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

abstract = "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 = "black holes, globular clusters, gravitational waves, kinematics and dynamics - stars",

author = "Bhusan Kayastha and Long Wang and Peter Berczik and Xiaoying Pang and Sedda, \{Manuel Arca\} and Albrecht Kamlah and Rainer Spurzem",

note = "Publisher Copyright: {\textcopyright} International Astronomical Union 2020.; 357th Symposium of the International Astronomical Union on White Dwarfs as Probes of Fundamental Physics: Tracers of Planetary, Stellar and Galactic Evolution ; Conference date: 21-10-2019 Through 25-10-2019",

year = "2020",

doi = "10.1017/S1743921320000459",

language = "English",

volume = "15",

pages = "206--210",

journal = "Proceedings of the International Astronomical Union",

issn = "1743-9213",

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TY - JOUR

T1 - Realistic models of Globular Clusters with white dwarfs, neutron stars and black holes using GPU supercomputer

AU - Kayastha, Bhusan

AU - Wang, Long

AU - Berczik, Peter

AU - Pang, Xiaoying

AU - Sedda, Manuel Arca

AU - Kamlah, Albrecht

AU - Spurzem, Rainer

N1 - Publisher Copyright: © International Astronomical Union 2020.

PY - 2020

Y1 - 2020

N2 - 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.

AB - 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.

KW - black holes

KW - globular clusters

KW - gravitational waves

KW - kinematics and dynamics - stars

UR - https://www.scopus.com/pages/publications/85095433627

U2 - 10.1017/S1743921320000459

DO - 10.1017/S1743921320000459

M3 - Conference article

AN - SCOPUS:85095433627

SN - 1743-9213

VL - 15

SP - 206

EP - 210

JO - Proceedings of the International Astronomical Union

JF - Proceedings of the International Astronomical Union

IS - 357

T2 - 357th Symposium of the International Astronomical Union on White Dwarfs as Probes of Fundamental Physics: Tracers of Planetary, Stellar and Galactic Evolution

Y2 - 21 October 2019 through 25 October 2019

ER -

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

Abstract

UN SDGs

Keywords

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