POPULATION OF DOUBLE WHITE DWARFS IN THE GALACTIC CENTER

Авторы

  • T. Panamarev Fesenkov Astrophysical Institute, Almaty, Kazakhstan
  • A. Otebay Faculty of Physics and Technology, Al-Farabi Kazakh National University, Almaty, Kazakhstan
  • B. Shukirgaliyev Energetic Cosmos Laboratory, Nazarbayev University, Nur-sultan, Kazakhstan
  • M. Kalambay Faculty of Physics and Technology, Al-Farabi Kazakh National University, Almaty, Kazakhstan
  • A. Just Astronomisches Rechen-Institut am Zentrum fuer Astronomie der Universitaet Heidelberg, Heidelberg, Germany
  • R. Spurzem National Astronomical Observatories and Key Laboratory for Computational Astrophysics, Chinese Academy of Sciences, Beijing, China
  • P. Berczik Main Astronomical Observatory, National Academy of Sciences of Ukraine, Kyiv, Ukraine
  • Ch. Omarov Fesenkov Astrophysical Institute, Almaty, Kazakhstan

Ключевые слова:

Galactic center, white dwarf binaries, gravitational waves.

Аннотация

Upcoming space-born gravitational wave interferometers will monitor gravitational radiation at low
frequency range. This will allow to study double white dwarf mergers and improve our understanding of physical
processes involved. High stellar densities in galactic cores may imply enhanced binary compact object formation and
coalescence compared to the galactic field. In this paper we analyze data from direct one-million-body simulation of
the Milky Way Galactic center to describe properties of double white dwarf binaries and discuss their contribution to
the gravitational radiation. We show that ~7% of all white dwarf - white dwarf pairs are likely to undergo the
gravitational wave driven merger resulting in a merger rate of . Therefore, we show that double white
dwarf merger rate in the Galactic center is larger than that in the Galactic field. The obtained results may be used in
future studies of white dwarf merger outcomes and their contribution to the gravitational radiation.

Загрузки

Опубликован

2020-06-08

Как цитировать

Panamarev, T., Otebay, A., Shukirgaliyev, B., Kalambay, M., Just, A., Spurzem, R., Berczik, P., & Omarov, C. (2020). POPULATION OF DOUBLE WHITE DWARFS IN THE GALACTIC CENTER. Известия НАН РК. Серия физико-математическая, (3), 15–20. извлечено от https://journals.nauka-nanrk.kz/physics-mathematics/article/view/444

Выпуск

№ 3 (2020): Известия НАН РК. Серия физико-математическая

Раздел

Статьи