Numerical Modelling of the Dynamics of the Galactic Halos in the Colliding Galaxies

Изучено поведение горячего коронального газа в сталкивающихся галактиках с "живыми гало" темной материи на основе параллельного трехмерного моделирования самосогласованной динамики N-тел и газа. Рассмотрены различные сценарии галактических столкновений, в том числе центрального и нецентрального, и использовались разные значения начальных скоростей сталкивающихся галактик. Показано, что с учетом собственной гравитации столкновения газообразных и звездных компонентов не приводит к образованию газовой "протогалактики", наблюдаемой в некоторых численных моделях. Также показано, что около шестидесяти процентов горячего газа гало вытесняется в межгалактическое пространство во время столкновения. При численном моделировании наблюдается значительный обмен газом (до 70% для лобовых столкновений) между двумя сталкивающимися галактиками.

Ключевые слова

Multi-GPU; OpenMP-CUDA; GPU-Direct; NVIDIA TESLA; задача N-тел; SPH; сталкивающиеся галактики.

Литература

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