INVESTIGATION OF DIFFERENT DARK MATTER PROFILES

Авторы

  • K. Boshkayev NNLOT
  • G. Zhumakhanova Al-Farabi Kazakh National University, Almaty, Kazakhstan
  • K. Mutalipova Al-Farabi Kazakh National University, Almaty, Kazakhstan
  • M. Muccino Laboratori Nazionali Di Frascati, Frascati, Italy

Ключевые слова:

galaxies, rotation curves, dark matter.

Аннотация

Different, commonly accepted and widely used phenomenological dark matter profiles such as the
pseudo-isothermal sphere, Burkert, Navarro-Frenk-White, Moore and Einasto profiles are employed to estimate the
mass distribution of dark matter in various galaxies. The Newtonian gravity is involved to perform computations at
large galactic scales. The distribution of dark matter in diverse types of galaxies is assumed to be spherical without
taking into account the complex structure of galaxies such as their cores, inner and outer bulges, disks and halos. The
theoretical rotation curves are overlapped with the observations for each individual galaxy. By means of the least
square algorithm the model parameters are inferred from the observational data and are subjected to the Bayesian
information criterion, which identifies the more preferred model. The masses of dark matter are calculated for each
galaxy, with all listed profiles, and compared with the visible masses of the galaxies. The results are in agreement
with the ones in the literature.

Загрузки

Опубликован

2019-12-12